# Plug Power Inc: Form 10-K for the period ended Dec 31, 2024

- Company: [Plug Power Inc](/companies/plug.md) (CIK 1093691)
- Form: 10-K
- Filed: 2025-03-03
- Accepted by EDGAR: Mar 3, 2025, 21:48 ET
- Period: 2024-12-31
- Accession: 0001558370-25-002049
- Inline XBRL: yes
- Main document: https://www.sec.gov/Archives/edgar/data/1093691/000155837025002049/plug-20241231x10k.htm
- All documents and exhibits: https://www.sec.gov/Archives/edgar/data/1093691/000155837025002049/

## Figures reported in this filing

Standardized XBRL line items for the period ended 2024-12-31.

| Line item | Period | Value | XBRL concept |
| --- | --- | ---: | --- |
| Revenue | 12 months, 2024-01-01 to 2024-12-31 | $628.8m | us-gaap:Revenues |
| Cost of revenue | 12 months, 2024-01-01 to 2024-12-31 | $1.25bn | us-gaap:CostOfRevenue |
| Gross profit | 12 months, 2024-01-01 to 2024-12-31 | −$624.9m | us-gaap:GrossProfit |
| Research and development | 12 months, 2024-01-01 to 2024-12-31 | $77.2m | us-gaap:ResearchAndDevelopmentExpense |
| Selling, general and administrative | 12 months, 2024-01-01 to 2024-12-31 | $376.1m | us-gaap:SellingGeneralAndAdministrativeExpense |
| Operating income | 12 months, 2024-01-01 to 2024-12-31 | −$2.02bn | us-gaap:OperatingIncomeLoss |
| Interest expense | 12 months, 2024-01-01 to 2024-12-31 | $46.6m | us-gaap:InterestExpense |
| Income tax | 12 months, 2024-01-01 to 2024-12-31 | −$2.7m | us-gaap:IncomeTaxExpenseBenefit |
| Net income | 12 months, 2024-01-01 to 2024-12-31 | −$2.10bn | us-gaap:NetIncomeLoss |
| Diluted EPS | 12 months, 2024-01-01 to 2024-12-31 | −$2.68 | us-gaap:EarningsPerShareDiluted |
| Basic EPS | 12 months, 2024-01-01 to 2024-12-31 | −$2.68 | us-gaap:EarningsPerShareBasic |
| Diluted shares (weighted) | 12 months, 2024-01-01 to 2024-12-31 | 785,024,373 shares | us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding |
| Operating cash flow | 12 months, 2024-01-01 to 2024-12-31 | −$728.6m | us-gaap:NetCashProvidedByUsedInOperatingActivities |
| Capital expenditure | 12 months, 2024-01-01 to 2024-12-31 | $287.1m | us-gaap:PaymentsToAcquirePropertyPlantAndEquipment |
| Cash and equivalents | at 2024-12-31 | $205.7m | us-gaap:CashAndCashEquivalentsAtCarryingValue |
| Current assets | at 2024-12-31 | $1.48bn | us-gaap:AssetsCurrent |
| Total assets | at 2024-12-31 | $3.60bn | us-gaap:Assets |
| Current liabilities | at 2024-12-31 | $748.5m | us-gaap:LiabilitiesCurrent |
| Total liabilities | at 2024-12-31 | $1.80bn | us-gaap:Liabilities |
| Current portion of debt | at 2024-12-31 | $200.0k | us-gaap:LongTermDebtCurrent |
| Shareholders' equity | at 2024-12-31 | $1.73bn | us-gaap:StockholdersEquity |

## Business

As filed, 42,377 characters.

### Background

Plug is building an end-to-end clean hydrogen ecosystem, from production, storage, and delivery to energy generation, to help its customers meet their business goals and decarbonize the economy. In creating the first commercially viable market for hydrogen fuel cells, the Company has deployed more than 72,000 fuel cell systems for forklifts and more than 275 fueling stations. Plug intends to deliver its hydrogen solutions directly to its customers, and through joint venture partners into multiple environments, including material handling, supply chain and logistics, e-mobility, stationary power generation and industrial applications.

Plug is focused on delivering a number of hydrogen solutions to its customers. Its vertically integrated end-to-end hydrogen solutions, which are designed to fit individual customer needs, include hydrogen production equipment or the delivery of hydrogen fuel, including:

- **Fuel cells**: Fuel cells are electrochemical devices that combine hydrogen and oxygen to produce electricity and heat without combustion. Plug offers stationary and mobility fuel cell products to its customers in addition to serving the material handling industry. Plug’s fuel cells power material handling vehicles (forklifts), replacing lead-acid batteries. Plug supports customers at multi-shift high volume manufacturing and high throughput distribution sites where Plug’s fuel cell products provide a unique combination of productivity, flexibility, and environmental benefits.
- **Proton exchange membrane (“PEM”) electrolyzers**: Plug electrolyzers use clean electricity to split water into hydrogen and oxygen. Using electrolyzers, customers can generate hydrogen for a variety of applications. PEM technology delivers high power density, carries low weight and volume and operates at relatively low temperatures which allows it to start quickly and cause less wear and tear on the system. In support of the market growth and its own ambitions, Plug has built a state-of-the-art gigafactory to produce electrolyzer stacks in Rochester, New York.
- **Hydrogen liquefiers**: Plug has a core competency in liquefaction systems known for their operational efficiency, flexibility and reliability. Plug’s hydrogen liquefaction system has one of the most energy-efficient designs on the market utilizing hydrogen as the refrigerant in the main liquefaction cycle.
- **Liquid hydrogen cryogenic solutions**: Plug has expertise designing and manufacturing cryogenic solutions, including liquid storage tanks, delivery trailers, vaporizers, portable equipment, and integrated control systems. The Plug hydrogen tanker is one of the largest and lightest trailers currently manufactured, with significant over-the-road payloads.
- **Hydrogen production**: In addition to its pre-existing hydrogen production plant in Tennessee, Plug began producing liquid hydrogen at its hydrogen facility in Kingsland, Georgia in January 2024. Also, Plug’s hydrogen production plant in St. Gabriel, Louisiana is on schedule, as previously announced, for operations in the first quarter of 2025, now entering the final commissioning phase, and Plug continues to progress additional new hydrogen production plants throughout the United States, including in New York and Texas.

We were organized as a corporation in the State of Delaware on June 27, 1997.

Unless the context indicates otherwise, the terms “Company,” “Plug,” “we,” “our,” or “us” as used herein refer to Plug Power Inc. and its subsidiaries.

### Business Strategy

Plug understands that green hydrogen is integral to addressing climate change in both the short and long term. Indeed, decarbonization is our very mission. To reach this goal, Plug’s business strategy is focused on the following:

- Expanding hydrogen production, with a focus on both output capabilities and geography. In addition to our milestone achievement in January 2024 at our hydrogen facility in Georgia, Plug restarted operation of its hydrogen production plant in Tennessee in February 2024 and its hydrogen production plant in Louisiana is now entering the final commissioning phase.
- Building out a clean hydrogen network of production plants. Plug is committed to building a network across the United States. Plug is also planning to build out a clean hydrogen network in Europe and continues to explore potential partners with whom to build hydrogen production plants, with ongoing efforts for a hydrogen production plant at multiple locations in Europe.
- Scaling production through electrolyzer and fuel cell gigafactories at our gigafactory in Rochester, New York and our 350,000 square-foot world-class fuel cell manufacturing facility to support the growing demand for fuel cells in Slingerlands, New York.
- Scaling Plug’s electrolyzer program to provide comprehensive and economical solutions focused on our 5-megawatt (“MW”) and 10MW offerings and using these building blocks to reach into the gigawatt-scale electrolyzer market. Electrolyzers are integral to Plug’s clean hydrogen ecosystem.
- Expanding into the large-scale stationary power market, including backup and continuous power applications, including data centers, microgrids, distribution centers and electric vehicle (“EV”) charging.
- Expanding into new regions that require decarbonization, including in Europe and Asia through joint ventures with Acciona Generación Renovable, S.A. (“Acciona”) in Spain and SK Innovation Co., Ltd, successor in interest to SK E&S Co., Ltd. (“SK Innovation”) in South Korea.
- Plug’s operating strategy objectives include decreasing product and service costs, while improving system reliability.

We believe continued investment in research and development is critical to the development and enhancement of innovative products, technologies, and services.

### Business Organization

The Company continues to evolve its organizational design to meet the growing needs of the business and product offerings and align with the strategy discussed above. Our organization is managed from a sales perspective based on “go-to-market” sales channels, emphasizing shared learning across end-user applications and common supplier/vendor relationships. These sales channels are structured to serve a range of customers for our products and services. As a result of this structure, we concluded that we have one operating and reportable segment — the design, development and sale of hydrogen products and solutions that help customers meet their business goals while decarbonizing their operations. Our chief executive officer was identified as the chief operating decision maker (“CODM”). All significant operating decisions made by management are largely based upon the analysis of Plug on a total company basis, including assessments related to our incentive compensation plans. The current organizational structure is designed to help Plug achieve its goals and establish Plug as a world leader in clean hydrogen solutions.

### Products and Services

Plug is facilitating the paradigm shift to an increasingly electrified world by innovating cutting-edge hydrogen and fuel cell solutions.

While we continue to develop commercially viable hydrogen and fuel cell product solutions, we have expanded our offerings to support a variety of commercial operations that can be powered with clean hydrogen. We provide electrolyzers that allow customers — such as refineries, producers of chemicals, steel, fertilizer and commercial refueling stations — to generate hydrogen on-site. We are focusing our efforts on (a) industrial mobility applications, including electric forklifts and electric industrial vehicles, at multi-shift high volume manufacturing and high throughput distribution sites where we believe our products and services provide a unique combination of productivity, flexibility, and environmental benefits; (b) production of hydrogen; and (c) stationary power systems that will support critical operations, such as data centers, microgrids, and generation facilities, in either a backup power or continuous power role, and replace batteries, diesel generators or the grid for telecommunication logistics, transportation, and utility customers. Plug expects to support these products and customers with an ecosystem of vertically integrated products that produce, transport, store and handle, dispense, and use hydrogen for mobility and power applications.

Our current product and service portfolio includes:

**GenDrive**: GenDrive is our hydrogen fueled PEM fuel cell system, providing power to material handling EVs, including Class 1, 2, 3 and 6 electric forklifts, automated guided vehicles, and ground support equipment.

**GenSure**: GenSure is our stationary fuel cell solution providing scalable, modular PEM fuel cell power to support the backup and grid-support power requirements of the telecommunications, transportation, and utility sectors; our GenSure High Power Fuel Cell Platform supports large scale stationary power and data center markets.

**Progen**: Progen is our fuel cell stack and engine technology currently used globally in mobility and stationary fuel cell systems. This includes Plug’s membrane electrode assembly (“MEA”), a critical component of the fuel cell stack used in zero-emission fuel cell systems.

**GenFuel**: GenFuel is our liquid hydrogen fueling, delivery, generation, storage, and dispensing system.

**GenCare**: GenCare is our ongoing “Internet of Things”-based maintenance and on-site service program for GenDrive fuel cell systems, GenSure fuel cell systems, GenFuel hydrogen storage and dispensing products and Progen fuel cell engines.

**GenKey**: GenKey is our vertically integrated “turn-key” solution combining either GenDrive or GenSure fuel cell power with GenFuel fuel and GenCare aftermarket service, offering complete simplicity to customers transitioning to fuel cell power.

**Electrolyzers**: The design and implementation of 5MW and 10MW electrolyzer systems that are modular, scalable hydrogen generators optimized for clean hydrogen production. Electrolyzers generate hydrogen from water using electricity and a special membrane and “green” hydrogen is generated by using renewable energy inputs, such as solar or wind power.

**Liquefaction Systems**: Plug’s 15 ton-per-day and 30 ton-per-day liquefiers are engineered for high efficiency, reliability, and operational flexibility — providing consistent liquid hydrogen to customers. This design increases plant reliability and availability while minimizing parasitic losses like heat leak and seal gas losses.

**Cryogenic Equipment:** Engineered equipment including trailers and mobile storage equipment for the distribution of liquified hydrogen, oxygen, argon, nitrogen and other cryogenic gases.

**Liquid Hydrogen:** Liquid hydrogen provides an efficient fuel alternative to fossil-based energy. We produce liquid hydrogen through our electrolyzer systems and liquefaction systems. Liquid hydrogen supply will be used by customers in material handling operations, fuel cell electric vehicle fleets, and stationary power applications.

We provide our products and solutions worldwide through our direct sales force, and by leveraging relationships with original equipment manufacturers (“OEMs”) and their dealer networks. Plug is currently targeting Asia, Australia, Europe, Middle East and North America for expansion in adoption. The European Union (the “EU”) has rolled out ambitious targets for the hydrogen economy, with the United Kingdom also taking steps in this direction, and Plug is seeking to execute on our strategy to become one of the European leaders in the hydrogen economy. This includes a targeted account strategy for material handling, securing strategic partnerships with European OEMs, energy companies, utility leaders and accelerating our electrolyzer business.

### Facilities

Currently, we manufacture and/or assemble our products at our manufacturing facilities in Latham, New York; Rochester, New York; Slingerlands, New York; Houston, Texas; and Lafayette, Indiana; and have an expanded customer service center in Dayton, Ohio. In addition, we have hydrogen production plants in Charleston, Tennessee; Kingsland, Georgia; and St. Gabriel, Louisiana. In 2022, we opened a warehouse and logistics center in Duisburg, Germany. Please see Item 2, “Properties”, for additional information regarding our facilities.

### Markets, Geography and Customer Concentration

The Company’s products and services predominantly serve the North American, European and Asian material handling markets, and primarily support large to mid-sized fleet, multi shift operations in high volume manufacturing and high throughput distribution centers. The Company has historically experienced fluctuations in its quarterly operating results, with more revenue typically recognized in the second half of the fiscal year as compared to the first half.

Customer demand for clean hydrogen has grown as a low-carbon energy source for hard-to-decarbonize industries, such as heavy-duty transportation, heavy manufacturing (steel, cement, aluminum, and chemicals), stationary power generation, and aviation. Orders for the Company’s products and services approximated $890.6 million as of the year ended December 31, 2024. The Company’s orders at any given time are comprised of fuel cells, hydrogen installations, maintenance services, electrolyzers, liquefiers, hydrogen trailers, and hydrogen fuel deliveries. The specific elements of the orders have varied terms of timing of delivery and can vary between 90 days to 10 years, with fuel cells and hydrogen installations being delivered near term and maintenance services and hydrogen fuel deliveries being delivered over a longer period of time.

For the year ended December 31, 2024, Walmart, Inc. (“Walmart”), accounted for 16.6% of our total consolidated revenues, which included a provision for warrant charge of $19.6 million. Additionally, 14.4% of our total consolidated revenues were associated with our second largest customer.

### Working Capital Items

We currently maintain inventory levels adequate for our short-term needs based upon present levels of production and for the purposes of global supply chain risk management. We consider the component parts of our different products to be generally available and current suppliers to be reliable and capable of satisfying anticipated needs. However, we have seen shortages of materials needed to produce fuel cell and hydrogen generation equipment components due to general supplier performance, labor shortages, supply chain constraints and logistical challenges. These material shortages have also negatively impacted the pricing of materials and components sourced or used by the Company.

### Distribution, Marketing and Strategic Relationships

We have developed strategic relationships with established companies in key areas including distribution, service, marketing, supply, technology development and product development. We sell our products worldwide, with a primary focus on North America, Europe, and Asia, through our direct product sales force, OEMs, and their dealer networks. We operate in Europe under the name Plug Power Europe to sell electrolyzers to customers in the Europe, Middle East and African (EMEA) region and to sell hydrogen fuel cell systems for the European material handling market.

Our wholly-owned subsidiary, Plug Power LA JV, LLC, created a joint venture with Niloco Hydrogen Holdings LLC, a wholly-owned subsidiary of Olin Corporation (“Olin”), named “Hidrogenii” in the third quarter of 2022. We believe Hidrogenii will support reliability of supply and speed to market for hydrogen throughout North America and set the foundation for broader collaboration between Plug and Olin. The construction of the 15-ton-per-day hydrogen production plant in St. Gabriel, Louisiana progressed as planned in 2024 and is on schedule, as previously announced, for operations in the first quarter of 2025 once the final commissions phase is complete. Hidrogenii is owned 50% by Plug Power LA JV, LLC and 50% by Niloco Hydrogen Holdings LLC.

Our wholly-owned subsidiary, Plug Power France, entered into a joint venture with Renault named HyVia in the second quarter of 2021. HyVia was formed to manufacture and sell fuel cell powered electric light commercial vehicles (“FCE-LCVs”) and to supply hydrogen fuel and fueling stations to support the FCE-LCV market, in each case primarily in Europe. HyVia is owned 50% by Plug Power France and 50% by Renault. In December 2024, HyVia entered receivership proceedings after facing challenges in the slow evolution of hydrogen mobility ecosystems in Europe. During 2024, the Company recorded losses for HyVia which resulted in the investments in non-consolidated entities and non-marketable equity securities financial statement line item of the consolidated balance sheets related to HyVia to be $0 as of December 31, 2024. For additional information see Note 4, “Investments”.

Our wholly-owned subsidiary, Plug Power España S.L. (“Plug Power Spain”), entered into a joint venture with Acciona, named AccionaPlug S.L., in the fourth quarter of 2021. The joint venture intends to develop clean hydrogen projects in Spain and Portugal and continues to evaluate potential projects. AccionaPlug S.L. has received funding and is owned 50% by Plug Power Spain and 50% by Acciona.

Plug Power Inc. entered into a joint venture with SK Innovation named SK Plug Hyverse Co. Ltd. (“SK Plug Hyverse”), which was initially funded in the first quarter of 2022. SK Plug Hyverse seeks to accelerate the use of hydrogen as an alternative energy source in selected Asian markets. This collaboration aims to provide hydrogen fuel cell systems, fueling stations, electrolyzers and clean hydrogen to the Korean and other selected Asian markets. The partnership will leverage SK Innovation’s leadership in chemicals, petroleum and energy as well as Plug’s leading hydrogen platform. This joint venture is owned 49% by Plug Power Inc. and 51% by SK Innovation.

Plug Power Inc. has also invested in a hydrogen infrastructure and growth equity fund, Clean H2 Infra Fund, a special limited partnership registered in France, since the fourth quarter of 2021. The Clean H2 Infra Fund is focused on clean hydrogen infrastructure through financing projects in the production, storage and distribution of clean hydrogen. As of December 31, 2024 the Company’s ownership percentage in the Clean H2 Infra Fund was approximately 5%.

In addition, we believe Plug’s acquisitions over the last several years have allowed Plug to vertically integrate and uniquely position Plug in the hydrogen industry to offer end-to-end hydrogen solutions to global customers, complementing the Company’s industry-leading position in the design, construction, and operation of customer-facing hydrogen fueling stations and material handling fuel cell application. These acquisitions are expected to further establish a pathway for Plug to transition from low-carbon to zero-carbon hydrogen solutions.

### Competition

We experience competition in all areas of our business. The markets we address for motive and backup power are characterized by the presence of well-established battery and combustion generator products. We also face competition from companies that offer other carriers of energy, such as solar, wind and batteries, integrated gas companies, and companies offering products similar to ours, such as hydrogen generation via Steam Methane Reformers. We believe the principal competitive factors in the markets in which we operate include product features, including size and weight, relative price and performance, lifetime operating cost, including any maintenance and support, product quality and reliability, safety, ease of use, footprint, rapid integration with existing equipment and processes, customer support design innovation, marketing and distribution capability, service and support and corporate reputation. For example:

- *Material handling –* We face competition from technologies that require electrical infrastructure at distribution centers. These are largely lithium ion and lead-acid batteries. Our main differentiation from these technologies is that we offer increased productivity at our customer sites. For example, our technologies provide more sustained power than batteries, recharge more quickly and also do not require our customers’ distribution centers to draw significant power from a local electrical grid.
- *Stationary products –* In backup and intermittent power applications, such as EV charging, we face competition from diesel generators provided by large corporations around the world. With respect to charging EVs, we fulfill a niche segment that allows customers to power vehicles while not being connected to the electrical grid. In continuous power applications, we provide a new alternative to distributed energy, such as natural gas turbines.
- *Hydrogen generation and storage –* We face competition from companies offering products similar to ours. For example, we face competition from legacy industrial gas companies that also produce hydrogen, and there are other companies that produce PEM electrolyzers, liquefiers and cryogenic transportation and storage equipment. Our products are designed to be more efficient on operating costs and we offer vertically integrated end-to-end hydrogen solutions. For example, our hydrogen liquefaction system has one of the most energy-efficient designs in the market utilizing hydrogen as the refrigerant in the main liquefaction cycle, and our hydrogen tanker is one of the largest and lightest trailers currently being manufactured, with significant over-the-road payloads.

### Intellectual Property

We believe that neither we nor our competitors can achieve a significant proprietary position on the basic technologies currently used in PEM fuel cell systems. However, we believe the design and integration of our system and system components, as well as some of the low-cost manufacturing processes that we have developed, are intellectual property that can be protected. Our intellectual property portfolio covers, among other things: fuel cell components that reduce manufacturing part count; fuel cell system designs that lend themselves to mass manufacturing; improvements to fuel cell system efficiency, reliability and system life; and control strategies, such as added safety protections and operation under extreme conditions. In general, our employees are party to agreements providing that all inventions, whether patented or not, made or conceived while being our employee, which are related to or result from work or research that we perform, will remain our sole and exclusive property.

We have a total of 46 issued patents currently active with the United States Patent and Trademark Office (“USPTO”), expiring between 2025 and 2042. At the close of 2024, we had 30 U.S. patent applications pending. Additionally, we have 18 trademarks registered with the USPTO due for renewal between 2025 and 2031, and 3 trademark applications pending.

### Government Regulation

Our fuel cell, electrolyzer, and hydrogen products, their installations, and the operations at our facilities are subject to oversight and regulation at the international level, as well as federal, state, and local levels in accordance with statutes and ordinances relating to, among others, building codes, fire codes, public safety, electrical and gas pipeline connections and hydrogen siting. The level of regulation may depend, in part, upon where a system is located — both domestically and abroad.

In addition, product safety standards have been established by the American National Standards Institute (“ANSI”), covering the overall fuel cell system. The class 1, 2, and 3 GenDrive products are designed with the intent of meeting the requirements of UL 2267 “Fuel Cell Power Systems for Installation in Industrial Electric Trucks” and NFPA 505 “Fire Safety Standard for Powered Industrial Trucks”. The hydrogen tanks used in these systems have been either certified to ANSI/CSA NGV2-2007 “Compressed Natural Gas Vehicle Fuel Containers” or ISO/TS 15869 “Gaseous hydrogen and hydrogen blends—Land vehicle fuel tanks”. We will continue to design our GenDrive products to meet ANSI and/or other applicable standards. We certified several models of class 1, 2, and 3 GenDrive products to the requirements of the CE mark with guidance from a European certified body. The hydrogen tanks used in these systems are certified to the Pressure Equipment Directive by a European certified body. The GenFuel hydrogen storage and dispensing products are designed with the intent of meeting the requirements of NFPA 2 “Hydrogen Technologies Code”. We are also subject to standards as applied to the design of our electrolyzer products, both domestically and abroad. Such standards include, but are not limited to, “Hydrogen Generators Using Water Electrolysis” (ISO 22734), “Hydrogen Technologies Code” (NFPA 2), “Explosive Atmospheres” requirements (UL 60079), CE product standards within the European Commission, and AS/NZS standards for our products within each jurisdiction, as applicable. As our Company increasingly expands to new markets and jurisdiction, we also become currently subject to new and different regulations in such jurisdictions.

We are subject to various federal, state, local, and non-U.S. environmental and human health and safety laws and regulations, including laws and regulations relating to the use, handling, storage, transportation, disposal and human exposure to hazardous substances and wastes, product safety, and emissions of pollution into the environment, and the remediation of contamination. Our facilities in the United States are subject to regulation by the Occupational Safety and Health Administration (“OSHA”), which regulates the protection of the health and safety of workers. In addition, the OSHA hazard communication standard requires that we maintain information about hazardous materials used or produced in our operations and that we provide this information to employees, state and local governmental authorities and local residents. We are also subject to occupational safety regulations in other countries. In addition, certain environmental laws and regulations impose liability and responsibility on present and former operators or users of facilities and sites for contamination at such facilities and sites without regard to causation or knowledge of contamination. Compliance with environmental laws and regulations can significantly increase the costs of our operations. Violations of environmental laws and regulations can subject us to additional costs and expenses, including defense costs and expenses and civil and criminal penalties. Environmental laws and regulations are becoming increasingly stringent, and compliance costs are significant and will continue to be significant in the foreseeable future. Additionally, new environmental laws and regulations could restrict or prohibit the uses of certain materials, chemicals, and/or components that are needed for our products and technologies. There can be no assurance that existing or future environmental and human health and safety laws and regulations will not have a material effect on our business.

We will continue to evaluate the potential impact such laws and regulations will have on our business. In addition, existing or pending climate change legislation, regulation, or international treaties or accords could have a material effect on our business or markets that we serve, or on our results of operations, capital expenditures or financial position. There is no guarantee that any such legislation, regulation, or international treaties or accords will be favorable to our business. We will continue to monitor emerging developments in this area.

At this time we do not know what additional requirements, if any, may be imposed on our products or their installation. We also do not know the extent to which any new regulations may impact our ability to distribute, install, and service our products. As we continue distributing our systems to our target markets, federal, state, local, or foreign government entities may seek to impose regulations or competitors may seek to influence regulations through lobbying efforts.

See Item 1A, “Risk Factors”, for a description of these governmental regulations and other material risks to us, including, to the extent material, to our competitive position.

### Inflation, Material Availability and Labor Shortages

Most components essential to our business are generally available from multiple sources; however, we believe there are some component suppliers and manufacturing vendors, particularly those suppliers and vendors that supply materials in very limited supply worldwide or supply commodities that have a high degree of volatility, whose loss to us or general unavailability could have a material adverse effect upon our business and financial condition. For example, although we believe the liquid hydrogen supply challenges of the past may have lessened in recent months, we may again experience similar challenges relating to the availability of hydrogen, including but not limited to suppliers utilizing force majeure provisions under existing contracts as they have in the past, which could negatively impact the amount of hydrogen we are able to provide under certain of our hydrogen supply agreements and other customer agreements. Furthermore, global commodity pricing has been volatile and has been influenced by political events and worldwide economic trends, which has impacted our sourcing strategies, resulting in adverse impacts on our business and financial condition. We have mitigated and are continuing to mitigate these risks by continuing to diversify our supply chain, including diversifying our global supply chain and implementing alternate system architectures that we expect will allow us to source from multiple fuel cell, electrolyzer stack and air supply component vendors. While we continue to invest in our supply chain to improve its resilience with a focus on automation, dual sourcing of critical components, insourcing and localized manufacturing when feasible, we are also working closely with these vendors and other key suppliers on coordinated product introduction plans, product and sales forecasting, strategic inventories, and internal and external manufacturing schedules and levels. However, ongoing changes to, and evolution of, our products designs such as simultaneous design/build efforts and new product serviceability trends, or incorrect forecasting or updates to previously forecasted volumes could present challenges to those strategies despite best efforts in leveraging supplier relationships and capabilities. With respect to production, although cost pressures from global energy prices and inflation have been less volatile than previous years, an increase in cost pressures or a rise in inflation could negatively affect our business again, which could have a pricing impact on our key raw materials. We have a regionally diverse supply chain, and in cases where we have single sourced suppliers (typically due to new technology and products or worldwide shortages due to global demand), we work to engineer alternatives in our product design or develop new supply sources while covering short- and medium-term risks with supply contracts, building up inventory, and development partnerships. However, if we are unable to reduce such inventory, that could tie up working capital.

We continue to take proactive steps through our supply chain team to limit the impact of supplier challenges generally and we continue to work closely with our suppliers and transportation vendors to ensure availability of products and implement other cost savings initiatives. In addition, we have continued discussions with suppliers with respect to the terms of our supply agreements, and the outcome of such discussions, including whether those discussions yield the desired modifications in the terms of such supply agreements, may impact the timing of when we receive shipments of certain supplies or result in other supply chain issues.

With respect to our service business, we have experienced inflationary increases in labor, parts and related overhead. This has contributed to the increase in our estimated projected costs to service fuel cell systems and related infrastructure, which resulted in an increase in the provision for loss contracts related to service. If these trends continue, we may have to record additional service loss provisions in the future. We anticipate bookings and revenue will be uneven in the near-term while we pursue sales opportunities.

Additionally, we, as well as our suppliers and vendors, have observed an increasingly competitive labor market. Tight labor markets have resulted in longer times to fill open positions for us and our suppliers and vendors. Increased employee turnover, reassessment of employee responsibilities given current business needs, changes in the availability of our workers as well as labor shortages have resulted in, and could continue to result in, increased costs which could negatively affect our component or raw material purchasing abilities, and in turn, our financial condition, results of operations, or cash flows.

### Backlog

The timing of delivery and installations of our products has a significant impact on the timing of the recognition of our product and installation revenues. Many factors can cause a lag between the time a customer signs a contract and our recognition of product revenue. These factors include the lead time for the manufacturing and construction of hydrogen related products, including fuel cells, electrolyzers, cryogenic equipment and hydrogen infrastructure. Customers may also ask us to delay an installation for reasons unrelated to the foregoing, including delays in their financing arrangements. Further, due to unexpected delays, deployments may require unanticipated expenses to expedite delivery of materials or labor to ensure the installation meets our timing objectives. These unexpected delays and expenses can be exacerbated in periods in which we deliver and install a larger number of smaller projects. In addition, if even relatively short delays occur, there may be a significant shortfall between the revenue we expect to generate in a particular period and the revenue that we are able to recognize. For our installations, revenue and cost of revenue can fluctuate significantly on a periodic basis depending on the timing of acceptance by the customer.

### Research and Development

Because the fuel cell industry is still in the early state of adoption, our ability to compete successfully is heavily dependent upon our ability to ensure a continual and timely flow of competitive products, services, and technologies to the marketplace. We continue to develop new products and technologies and to enhance existing products in the areas of cost, size, weight, and in supporting service solutions in order to drive further commercialization.

We may also expand the range of our product offerings and intellectual property through licensing and/or acquisition of third-party business and technology. Our research and development expense totaled $77.2 million, $113.7 million, and $99.6 million during the years ended December 31, 2024, 2023 and 2022, respectively.

### Human Capital Resources

As of December 31, 2024, we had 3,224 employees, of which 172 are temporary employees, with 2,771 located in the United States and 453 located outside of the United States. In February 2024, we announced a cost-reduction initiative that included strategic workforce adjustments which was effectively completed during the fourth quarter of 2024. We continually evaluate our workforce needs to meet the Company’s strategic priorities. In March 2025, we announced a cost-reduction initiative that included additional reductions in the workforce over the coming weeks. None of our employees are represented by a collective bargaining unit, and we believe that our relationship with our employees is positive.

#### Engagement and Inclusion

The Company is dedicated to fostering a culture of employee engagement and inclusion and is committed to hiring talented and qualified individuals from all backgrounds and perspectives to which the Company’s ultimate success is linked.

We actively seek to maintain a workplace that is free from discrimination and that fosters a sense of community and belonging among the workforce. We seek to provide everyone at Plug with equal opportunity to grow and develop, leveraging the unique skills and differences of their individual background, characteristics, and aspirations.

We appreciate the collective differences of our employees, and we value different perspectives to solve complex problems and bring innovative solutions. We are transparent and collaborative, welcoming ideas, thoughts, and questions from everyone. We endeavor to champion inclusivity, to respect each other, and to celebrate our differences as we build an environment in which we are all proud to be a part.

#### Community Involvement

We recognize the importance of supporting our local communities as we continue to grow as an organization. For example, we donate to our local communities, facilitate employee donations through United Way, and have initiated a

Community Relations Program to evaluate deserving nonprofit organizations to boost our corporate giving program. Also, each Plug employee is provided sixteen (16) hours per year paid time off to volunteer with a not-for-profit organization of his or her choice.

#### Performance Management, Compensation and Benefits

Our performance management process incorporates annual goals for the Company, as well as departmental and individual employee goals. Employees and their managers are accountable for goals and must review performance against the goals on an ongoing basis. We provide employees base wages that are competitive and consistent with employee positions, skill levels, experience, and location. Additionally, employees may also be granted annual short-term incentive compensation and equity compensation awards with multi-year vesting for retention.

As part of our commitment to our people, Plug offers employees competitive pay and benefits, including health, vision, and dental plans, flexible spending accounts, comprehensive life insurance (including company-provided life insurance), disability coverage and a 401(k) retirement program. Additionally, employees are offered a vacation and holiday package, and paid parental leave to aid in bonding time for new parents. To encourage savings, we auto-enroll all employees in our 401(k)-retirement savings plan after 30 days of employment.

#### Talent and Training

Our talent strategy is a balance of attracting external talent, combined with the possibility of upward mobility that encourages career growth and opportunity to progress within Plug. We leverage both internal and external recruitment resources and incentivize our current employees through our employee referral program to refer talent they recommend as future employees of Plug.

A key component to planning for individual career growth aligned with organizational growth is learning and development. For example, our educational assistance program offers financial assistance to encourage employees to continue their education and support their continuous enhancement of their knowledge and skills. Besides job-specific safety training, we offer personal development training on many topics, including sustainability and wellness. Online participation in internally developed business-related courses called Plugology is encouraged for all employees and helps newly hired employees assimilate to the business.

#### Health, Safety and Wellness

We strive to create a safe working environment, promoting environmental and employee health and safety awareness, and seek to undertake appropriate actions to reduce health and safety risks and establish procedures with appropriate protection for the safety of our employees. In addition, we undertake to safeguard the health and well-being of our employees by providing them with access to health and wellness programs that are designed to promote long-term healthy and active lifestyles. For example, in 2024 we launched a Global Employee Assistance Program to help with mental health, coaching and therapy services.

### Available Information

Our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, including exhibits, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act are available free of charge, other than an investor’s own internet access charges, on the Company’s website at www.plugpower.com as soon as reasonably practicable after the Company electronically files such material with, or furnishes it to, the Securities and Exchange Commission (the “SEC”). The information contained on our website is not included as a part of, or incorporated by reference into, this Annual Report on Form 10-K. The SEC also maintains an internet site that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC. The SEC’s website address is https://www.sec.gov.

We may announce material business and financial information to the public about us, our products and services, and other matters through a variety of means, including filings with the SEC, press releases, public conference calls, webcasts, the investor relations section of our website (www.ir.plugpower.com) and our X (formerly Twitter) account at @PlugPowerInc in order to achieve broad, non-exclusionary distribution of information to the public and for complying with our disclosure obligations under Regulation FD. We encourage investors, the media, and others interested in Plug to follow the foregoing channels and review the information that we make available on such channels, in addition to following our filings with the SEC.

## Risk factors

As filed, 130,315 characters.

The following risk factors should be considered carefully in addition to the other information in this Annual Report on Form 10-K. The occurrence of any of the following material risks could harm our business and future results of operations and could result in the trading price of our common stock declining and a partial or complete loss of your investment. These risks are not the only ones that we face. Additional risks not presently known to us or that we currently consider immaterial may also impair our business operations and trading price of our common stock. The discussion contained in this Annual Report on Form 10-K contains “forward-looking statements” within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act, that involve risks and uncertainties. Refer to the section entitled “Forward-Looking Statements”.

### A. MARKET RISKS

***We may be unable to successfully execute and operate our hydrogen production projects and such projects may cost more and take longer to complete than we expect.***

As part of our vertical integration strategy, the Company is developing and constructing hydrogen production facilities at locations across the United States and Europe. Our ability to successfully complete, operate these projects and obtain green certification for some of these facilities is not guaranteed. These projects will impact our ability to meet and supplement the hydrogen demands for our products and services, for both existing and prospective customers. Our hydrogen production projects are dependent, in part, upon our ability to meet our internal demand for electrolyzers and liquefiers required for such projects. The timing and cost to complete the construction of our hydrogen production projects are also subject to a number of factors outside of our control such as delays related to contractors, suppliers or other third parties. Such projects may take longer and cost more to complete and become operational than we expect. For example, construction at our Georgia plant took longer than we expected before becoming operational in 2024.

The viability and competitiveness of our hydrogen production facilities will depend, in part, upon favorable laws, regulations, and policies related to hydrogen production. Some of these laws, regulations, and policies are nascent, and there is no guarantee that they will be favorable to our projects. For further information on risks associated with government regulations, see “Regulatory Risks”. Additionally, our facilities will be subject to numerous and new permitting, regulations, laws, and policies, many of which might vary by jurisdiction. Hydrogen production facilities are also subject to robust competition from well-established multinational companies in the energy industry. There is no guarantee that our hydrogen production strategy will be successful, amidst this competitive environment.

***Our products and performance depend largely on the availability of hydrogen and recent insufficient supplies of hydrogen could negatively affect our sales and deployment of our products and services.***

Our products and services depend largely on the availability of hydrogen. Although we are in the process of building multiple hydrogen production plants, our business could be materially and adversely affected by an inadequate availability of hydrogen or our failure to secure hydrogen supply at competitive prices. We produce liquid hydrogen at our Georgia and Tennessee facilities. There is no assurance that our hydrogen production will scale at the rate we anticipate or that we will complete additional hydrogen production plants on schedule or at all. Additionally, we are dependent upon hydrogen suppliers to provide us with hydrogen for the commercialization of our products and services. We have experienced supply chain issues relating to the availability of hydrogen, including but not limited to suppliers utilizing force majeure provisions under existing contracts, which has led to volume constraints, delay in our deployments and service margin improvements, and negatively impacted the amount of hydrogen we have been able to provide under certain of our supply and other agreements. If hydrogen suppliers elect not to participate in the material handling market, or if supply chain issues relating to the availability of hydrogen continue, insufficient supplies of hydrogen may result. If hydrogen is not readily available or if hydrogen prices are such that energy produced by our products costs more than energy provided by other sources, then our products could be less attractive to potential users and our products’ value proposition could be negatively affected which could materially and adversely affect our sales and the deployment of our products and services.

***Inflationary trends, economic uncertainty, market trends, political instability, and other conditions affecting the profitability and financial stability of us and our customers could negatively impact our sales growth and results of operations.***

Adverse economic conditions and political instability in the geographic markets we serve, such as tight credit markets, inflation, limited capital spending, delay or reduction in consumer spend, and changes in government priorities, could have a material adverse effect on our business, financial condition and results of operations. For example, increases in the cost of raw materials, and the expenses associated with the distribution and transportation of these materials and products we sell, can have an adverse impact on the business, financial condition, and results of operations of us or our suppliers. In an inflationary environment, we may be unable to raise the sales prices of our products and services at or above the rate at which our costs increase, which could reduce our profit margins. For example, with respect to our service business, we have experienced inflationary increases in labor, parts and related overhead. This contributed to the increase in our estimated projected costs to service fuel cell systems and related infrastructure, which resulted in an increase in the provision for loss contracts related to service during 2024. If these trends continue, we may have to record additional service loss provisions in the future. We also may experience lower than expected sales and potential adverse impacts on our competitive position if there is a decrease in consumer spending or a negative reaction to our pricing.

Increases in interest rates may increase our cost of borrowing and result in limitations on our ability to access credit or otherwise raise debt and equity capital. In addition, if there is a government shutdown in the United States, especially a prolonged shutdown, it could impact our ability to access the public markets and obtain necessary capital in order to properly capitalize and continue our operations, which could have a material adverse effect on our business, financial condition and results of operations. Increased interest rates, especially if coupled with reduced government spending and volatility in financial markets, may have the effect of further increasing economic uncertainty and heightening these risks.

With respect to our customers, the demand for our products and services is sensitive to their production activity, capital spending and demand for their products and services. In the past couple of years, we have observed increased economic uncertainty in the United States and abroad, including inflation and higher interest rates. Impacts of such economic weakness include falling overall demand for goods and services, leading to reduced profitability, reduced credit availability, higher borrowing costs, reduced liquidity, volatility in credit, equity and foreign exchange markets, and bankruptcies. These developments have led to supply chain disruption and transportation delays which have caused incremental freight charges, which have negatively impacted our business and our results of operations. In addition, as our customers react to global economic conditions, we have seen them reduce spending on our products and take additional precautionary measures to limit or delay expenditures and preserve capital and liquidity. In 2024, we implemented price increases across our offerings including equipment, service and hydrogen fuel, which caused customers to change or delay their purchasing decisions with us. Reductions in customer spending on our solutions, delays in customer purchasing decisions, lack of renewals, inability to attract new customers, uncertainty about business continuity as well as pressure for extended billing terms or pricing discounts, could limit our ability to grow our business and negatively affect our operating results and financial condition.

Additionally, many of our customers operate in markets that may be impacted by market uncertainty, trade and tariff policies, costs of goods sold, currency exchange rates, central bank interest rate changes, foreign competition, offshoring of production, oil and natural gas prices, geopolitical developments, labor shortages, inflation, and a variety of other factors beyond our control. Any of these factors could cause customers to idle or close facilities, delay purchases, reduce production levels, or experience reductions in the demand for their own products or services, and other conditions affecting the profitability and financial stability of our customers could negatively impact our sales growth and results of operations.

***Volatile commodity prices and shortages may adversely affect our gross margins and financial results.***

Some of our products contain commodity-priced materials. Commodity prices and supply levels affect our costs. For example, nickel, platinum, titanium and iridium are key materials in our PEM fuel cells, electrolyzers, and hydrogen infrastructure. Platinum, titanium, and iridium are scarce natural resources, and we are dependent upon a sufficient supply of these commodities. These resources may become increasingly difficult to source due to various cost, geopolitical, or other reasons, which in turn might have a material adverse effect on our business.

While we do not anticipate significant near- or long-term supply shortages with respect to our demand of platinum, titanium, or iridium, a shortage could adversely affect our ability to produce commercially viable PEM fuel cells, PEM electrolyzers, or hydrogen production facilities, or raise our cost of producing such products and services. In addition, global inflationary pressures have recently increased, which could potentially increase commodity price volatility. Additionally, the geopolitical events in Ukraine could have a potentially significant impact on iridium supply that may impact our ability to produce or products or raise our cost of producing such products depending on the volume of iridium needed and success of iridium reduction engineering design efforts. Our ability to pass on such increases in costs in a timely manner depends on market conditions, and the inability to pass along cost increases could result in lower gross margins.

***Our ability to source parts and raw materials from our suppliers could be disrupted or delayed in our supply chain which could adversely affect our results of operations.***

Our operations require significant amounts of necessary parts and raw materials. Most components essential to our business are generally available from multiple sources; however, we believe there are some component suppliers and manufacturing vendors, particularly those suppliers and vendors that supply materials in very limited supply worldwide or supply commodities that have high degree of volatility, whose loss to us or general unavailability could have a material adverse effect upon our business and financial condition. If we are unable to source these parts or raw materials, our operations may be disrupted, or we could experience a delay or halt in certain of our manufacturing operations. We believe that our supply management and production practices are based on an appropriate balancing of the foreseeable risks and the costs of alternative practices. Nonetheless, reduced availability or interruption in supplies, whether resulting from more stringent regulatory requirements, supplier financial condition, increases in duties and tariff costs, disruptions in transportation, an outbreak of a severe public health pandemic, severe weather, or the occurrence or threat of wars or other conflicts, could have an adverse effect on our financial condition, results of operations and cash flows. For example, in 2023, we experienced shortages in the supply of liquid hydrogen due to suppliers utilizing force majeure provisions under existing contracts. These volume constraints delayed our deployments and service margin improvements and negatively impacted the amount of hydrogen we have been able to provide under certain of our supply and other agreements. Furthermore, ongoing global economic trends have caused significant challenges for global supply chains resulting in inflationary cost pressures, component shortages, and transportation delays, which have impacted our business.

***We face risks associated with our plans to market, distribute, and service our products internationally.***

We market, distribute, sell and service our product offerings internationally and expect to continue investing in our international operations. We have limited experience operating internationally, including developing and manufacturing our products to comply with the commercial and legal requirements of international markets. Our success in international markets will depend, in part, on our ability and that of our partners to secure and maintain relationships with foreign sub-distributors, and our ability to manufacture products that meet foreign regulatory and commercial requirements. Additionally, our planned international operations are subject to other inherent risks, including potential difficulties in enforcing contractual obligations and intellectual property rights in foreign countries, and could be adversely affected due to, among other things, fluctuations in currency exchange rates, political and economic instability, acts or threats of terrorism, changes in governmental policies or policies of central banks, expropriation, nationalization and/or confiscation of assets, price controls, fund transfer restrictions, capital controls, exchange rate controls, taxes, unfavorable political and diplomatic developments, changes in legislation or regulations and other additional developments or restrictive actions over which we will have no control.

Doing business in foreign markets requires us to be able to respond to rapid changes in market, legal, and political conditions in these countries. As we expand in international markets and explore potential business activities across the globe, we may face numerous challenges. Such challenges might include unexpected changes in regulatory requirements; potential conflicts or disputes that countries may have to deal with, among other things, data privacy requirements; labor laws and anti-competition regulations; export or import restrictions; laws and business practices favoring local companies; fluctuations in currency exchange rates; longer payment cycles and difficulties in collecting accounts receivables; difficulties in managing international operations; potentially adverse tax consequences, tariffs, customs charges, bureaucratic requirements and other trade barriers; restrictions on repatriation of earnings; and the burdens of complying with a wide variety of international laws. We face risks associated with our plans to market, distribute, and service our products and services internationally and any of these factors could adversely affect our results of operations and financial condition. The success of our international expansion will depend, in part, on our ability to succeed in navigating the different legal, regulatory, economic, social, and political environments.

***Our investments in joint ventures may involve numerous risks that may affect the ability of such joint ventures to make distributions to us.***

We currently conduct some of our operations through joint ventures in which we share control with our joint venture participants. Investments in joint ventures may involve risks not present when a third party is not involved, including the possibility that our joint venture participants might experience business or financial stress that impact their ability to effectively operate the joint venture, or might become bankrupt or may be unable to meet their economic or other obligations, in which case the joint venture may be unable to access needed growth capital without additional funding from us. For example, HyVia, our joint venture with Renault, entered receivership proceedings opened by judgment of the Commercial Court of Versailles in December 2024 as a direct consequence of the slow emergence of hydrogen mobility ecosystems locally, coupled with significant development costs of hydrogen innovation and an insufficient regulatory environment. Subsequently, HyVia has entered into a judicial liquidation proceeding opened by judgment of the Economic Activities Court of Versailles dated February 18, 2025 (judgment publication being still pending). In addition, our joint venture participants may have economic, tax, business or legal interests or goals that are inconsistent with ours, or those of the joint venture, and may be in a position to take actions contrary to our policies or objectives. Furthermore, joint venture participants may take actions that are not within our control, which may expose our investments in joint ventures to the risk of lower values or returns. Disputes between us and co-venturers may result in litigation or arbitration that could increase our expenses and prevent our officers and/or directors from focusing their time and efforts on our day-to-day business. In addition, we may, in certain circumstances, be liable for the actions of our co-venturers. Each of these matters could have a material adverse effect on us.

We made certain assumptions and projections regarding the future of the markets served by our joint venture investments that included projected raw materiality availability and pricing, production costs, market pricing and demand for the joint venture’s products. These assumptions were an integral part of the economics used to evaluate these joint venture investment opportunities prior to consummation. To the extent that actual market performance varies from our models, our ability to achieve projected returns on our joint venture investments may be impacted in a materially adverse manner. Failure by us, or an entity in which we have a joint venture interest, to adequately manage the risks associated with such joint ventures could have a material adverse effect on the financial condition or results of operations of our joint ventures and, in turn, our business and operations. In addition, should any of these risks materialize, it could have a material adverse effect on the ability of the joint venture to make future distributions to us.

### Our products and services face intense competition.

The markets for energy products, including PEM fuel cells, electrolyzers, and hydrogen production are intensely competitive. Our expansion into electrolyzer manufacturing and hydrogen production similarly faces robust competition — both from incumbent companies and new emerging business interests in the United States and abroad. Some of our competitors are much larger than we are and may have the manufacturing, marketing and sales capabilities to complete research, development, and commercialization of products more quickly and effectively than we can. There are many companies engaged in all areas of traditional and alternative energy generation in the United States and abroad, including, among others, major electric, oil, chemical, natural gas, battery, generator and specialized electronics firms, as well as universities, research institutions and foreign government-sponsored companies. These firms are engaged in forms of power generation such as advanced battery technologies, generator sets, fast charged technologies and other types of fuel cell technologies. Well established companies might similarly seek to expand into new types of energy products, including PEM fuel cells, electrolyzers, or hydrogen production. Additionally, some competitors may rely on other different competing technologies for fuel cells, electrolyzers, or hydrogen production. We believe our technologies have many advantages. In the near future, we expect the demand for our products — electrolyzers in particular — to largely offset any hypothetical market preference for competing technologies. However, changes in customer preferences, the marketplace, or government policies could favor competing technologies. The primary current value proposition for our fuel cell customers stems from productivity gains in using our solutions. Longer term, given evolving market dynamics and changes in alternative energy tax credits, if we are unable to successfully develop future products that are competitive with competing technologies in terms of price, reliability and longevity, customers may not buy our products. Technological advances in alternative energy products, battery systems or other fuel cell, electrolyzer, or hydrogen technologies may make our products less attractive or render them obsolete.

***We will continue to be dependent on certain third-party key suppliers for components of our products, hydrogen generation projects, and manufacturing facilities. The failure of a supplier to develop and supply components on mutually agreeable terms or at all, or our inability to obtain substitute sources of these components on a timely basis or on terms acceptable to us, could impair our ability to manufacture our products, could increase our cost of production or could affect our ability to generate hydrogen, which would in turn negatively affect our sales and deployment of our products and services.***

We rely on certain key suppliers for critical components in our products, and there are numerous other components for our products that are sole sourced. If we fail to maintain our relationships with our suppliers or build relationships with new suppliers, or if suppliers are unable to meet our demand on mutually agreeable terms, we may be unable to manufacture our products, or our products may be available only at a higher cost or after a delay. The Company could experience supply chain-related delays for components of our products, hydrogen generation projects, and manufacturing facilities that could impact our cost of hydrogen production or could affect our ability to generate hydrogen. In addition, to the extent that our supply partners use technology or manufacturing processes that are proprietary, we may be unable to obtain comparable components from alternative sources. Furthermore, we may become increasingly subject to domestic content sourcing requirements and Buy America preferences, as required by federal infrastructure funding and various tax incentives in the United States, and we may become subject in the future to domestic sourcing requirements that may become relevant to the European Union. Domestic content preferences potentially mandate our Company to source certain components and materials from United States-based suppliers and manufacturers. Conformity with these provisions potentially depends upon our ability to increasingly source components or materials from within the United States. An inability to meet these requirements could have a material adverse effect on the Company’s ability to successfully leverage tax incentives or compete for certain federal infrastructure funding sources imposing such mandates.

In addition, the failure of a supplier to develop and supply components in a timely manner or at all, or to develop or supply components that meet our quality, quantity and cost requirements, or our inability to obtain substitute sources of these components on a timely basis or on terms acceptable to us, could impair our ability to manufacture our products or could increase our cost of production. If we cannot obtain substitute materials or components on a timely basis or on acceptable terms, we could be prevented from delivering our products to our customers within required timeframes. Any such delays have resulted and could continue to result in sales and installation delays, cancellations, penalty payments or loss of revenue and market share, any of which could have a material adverse effect on our business, results of operations, and financial condition.

### B. FINANCIAL AND LIQUIDITY RISKS

***Our ability to achieve our business objectives and to continue to meet our obligations is dependent upon our ability to maintain a sufficient level of liquidity.***

Our ability to maintain a sufficient level of liquidity to meet our financial obligations will be dependent upon our future performance, which will be subject to general economic conditions, industry tailwinds and financial, business and other factors affecting our operations, many of which are beyond our control. In 2024, we continued to experience negative cash flows from operations and net losses. The Company incurred net losses of approximately $2.1 billion for the year ended December 31, 2024.

To operate more efficiently and control our expenditures, in 2024 we implemented a broad range of cost saving measures, including operational consolidation, strategic workforce reductions and various other cost reduction initiatives. In addition, in March 2025, we announced additional measures to optimize our operational footprint, resource and ongoing expenses, which included additional reductions in the workforce and additional reductions in discretionary spending, inventory and capital expenditures. There can be no assurance that the anticipated cost savings, operating efficiencies or other benefits will be achieved, within the anticipated timeframes or at all, or that they will not be significantly and materially less than anticipated. Our ability to realize the anticipated cost savings is subject to many estimates and assumptions, including business, economic and competitive uncertainties and contingencies, such as our ability to maintain business relationships and successfully negotiate changes to existing agreements with respect to pricing increases, contract terms, and delivery times, among others. Many of these uncertainties and contingencies are beyond our control and if our estimates and assumptions prove to be incorrect, if we experience delays, or if other unforeseen events occur, it may impact our ability to realize the anticipated cost savings. In addition, our cost savings initiatives may subject us to litigation risks and expenses and may have other consequences, such as attrition beyond our planned reduction in workforce or a negative effect on employee morale, productivity or ability to attract highly skilled employees.

If our cost saving measures fail to achieve some or all of the expected benefits, it may negatively impact our current forecast of cash flows and we may be required to initiate further cost savings activities or negotiate further changes to existing agreements with vendors, suppliers and service providers. Further, our cost saving measures may result in unexpected expenses or liabilities and/or write-offs. Our lack of cash flows may also constrain our business and subject us to significant risks, including being unable to make the necessary investments in our business, which can adversely impact our ability to effectively pursue our business objectives, including delays in the construction of our hydrogen plants or delays in our ability to fulfill purchase orders. Our inability to successfully execute our business objectives could have a material adverse effect on our business, financial condition and results of operations.

To the extent our cost saving measures are not sufficient to drive a substantial reduction in cash burn throughout 2025 and we are unable to repay our debt and other obligations as they become due with cash on hand or from other sources, we will need to restructure or refinance all or part of our debt, sell assets, reduce capital expenditures, borrow more cash or raise equity. Additional indebtedness or equity financing may not be available to us in the future for the refinancing or repayment of existing debt and other obligations, or if available, such additional debt or equity financing may not be available in a sufficient amount, on a timely basis, or on terms acceptable to us and within the limitations specified in our then existing debt instruments. In addition, in the event we decide to sell additional assets, we can provide no assurance as to the timing of any asset sales or the proceeds that could be realized by us from any such asset sale.

### We have incurred losses and anticipate continuing to incur losses.

We have not achieved operating profitability in any quarter since our formation and we will continue to incur net losses until we can produce sufficient revenue to cover our costs. As of December 31, 2024, we had an accumulated deficit of $6.6 billion. We have continued to experience negative cash flows from operations and net losses. Our net losses were approximately $2.1 billion, $1.4 billion and $724.0 million for the years ended December 31, 2024, 2023 and 2022, respectively. The net cash used in operating activities was $728.6 million, $1.1 billion and $828.6 million for the years ended December 31, 2024, 2023 and 2022, respectively. We expect to generate operating losses for the foreseeable future as we continue to devote significant resources to optimize our current production and manufacturing capacity, construct hydrogen plants and manage inventory to deliver our end-products and related services.

We anticipate that we will continue to incur losses until we can produce and sell our products and services on a large-scale and cost-effective basis. We cannot guarantee when we will operate profitably, if ever. In order to achieve profitability, we must successfully execute our planned path to profitability in the early adoption markets on which we are focused. The profitability of our products depends largely on material and manufacturing costs and the price of hydrogen. The hydrogen infrastructure that is needed to support our growth readiness and cost efficiency must be available and cost efficient. We must continue to shorten the cycles in our product roadmap with respect to improvement in product reliability and performance that our customers expect. We must execute on successful introduction of our products into the market. We must accurately evaluate our markets for, and react to, competitive threats in both other technologies (such as advanced batteries) and our technology field. Finally, we must continue to lower our products’ build costs and lifetime service costs. If we are unable to successfully take these steps, we may never operate profitably, and, even if we do achieve profitability, we may be unable to sustain or increase our profitability in the future.

***We will have to raise additional capital through public or private equity or debt transactions and/or complete one or more strategic transactions to continue our business and such capital may not be available to us or, if received, may not be available to us on favorable terms.***

As of December 31, 2024, we had net working capital of $729.0 million, which was comprised of the net amount of current assets of $1.5 billion and current liabilities of $748.5 million. Included in net working capital as of December 31, 2024 were unrestricted cash and cash equivalents of $205.7 million and current restricted cash of $198.0 million. This compares to net working capital of $822.2 million as of December 31, 2023, which was comprised of the net amount of current assets of $1.8 billion and current liabilities of $964.8 million. Included in net working capital as of December 31, 2023 were unrestricted cash and cash equivalents of $135.0 million and current restricted cash of $216.6 million.

Our cash requirements relate primarily to working capital needed to operate and grow our business, including funding operating expenses, managing our inventory to support both shipments of new units and servicing the installed base, supporting equipment leased and equipment related to Power Purchase Agreements (“PPAs”) for customers under long-term arrangements, funding our GenKey “turn-key” solution, which includes the installation of our customers’ hydrogen infrastructure as well as delivery of the hydrogen fuel, continued expansion of our markets, such as Europe and Asia, continued development and expansion of our products, such as Progen, payment of lease obligations under sale/leaseback financings, mergers and acquisitions, strategic investments and joint ventures, liquid hydrogen plant construction, expanding production facilities and the repayment or refinancing of our long-term debt. Our ability to meet future liquidity needs and capital requirements will depend upon numerous factors, including the timing and quantity of product orders and shipments; attaining and expanding positive gross margins across all product lines; the timing and amount of our operating expenses; the timing and costs of working capital needs, including our ability to manage inventory; the timing and costs of building a sales base; the ability of our customers to obtain financing to support commercial transactions; our ability to obtain financing arrangements to support the sale or leasing of our products and services to customers, and the terms of such agreements that may require us to pledge or restrict substantial amounts of our cash to support these financing arrangements; the timing and costs of developing marketing and distribution channels; the timing and costs of product service requirements; the timing and costs of hiring and training product staff; the extent to which our products gain market acceptance; the timing and costs of product development and introductions; the extent of our ongoing and new research and development programs; and changes in our strategy or our planned activities.

To improve our financial condition and liquidity, we will have to raise additional capital. There can be no assurance that we will have access to the capital we need on favorable terms when required or at all. In periods when the capital and credit markets experience significant volatility, the amounts, sources and cost of capital available to us may be adversely affected. For example, we are party to certain agreements with collateral requirements and capital or margin calls, and we cannot predict when and what amounts may be called. We primarily use external financing to provide working capital needed to operate and grow our business. Sufficient sources of external financing may not be available to us on cost effective terms. If we cannot raise additional funds when we need them, our financial condition and business could be materially adversely affected. In addition, we have implemented a broad range of cost saving measures, including operational consolidation, strategic workforce reductions and various other cost reduction initiatives, to reduce our cash burn. In addition, in March 2025, we announced additional reductions in the workforce and additional reductions in discretionary spending, inventory and capital expenditures. Our ability to continue our operations is contingent upon our ability to successfully implement cost saving measures such as those referenced above and if we fail to do so and are unable to raise sufficient capital and/or complete one or more strategic transactions, we would be forced to modify or cease operations, liquidate assets or pursue bankruptcy proceedings.

***The DOE funding of the loan may be delayed, and we may not be able to satisfy all of the technical, legal, environmental or financial conditions acceptable to the DOE to receive the loan guarantee.***

On January 16, 2025, the U.S. Department of Energy (“DOE”) agreed to arrange a multi-draw term loan facility to be provided by the Federal Financing Bank to a subsidiary of the Company (the “DOE loan”) to finance the development, construction, and ownership of up to six green hydrogen production facilities. Our ability to receive advances under the DOE loan is subject to certain conditions, including the achievement of certain milestones, which may not be achieved at the time that we anticipate, or at all. In addition, whether and when the DOE loan will be funded is subject to a number of factors outside of our control, including legislative enactments and administrative actions. On January 20, 2025, President Trump signed the Unleashing American Energy Executive Order, which paused the release of federal funds appropriated under the Inflation Reduction Act (the “IRA”) and Infrastructure Improvement and Jobs Act, including DOE loans and grants. As a result, the funding of the DOE loan may take longer than we expect and if we are not able to satisfy all of the technical, legal, environmental or financial conditions acceptable to the DOE to receive the loan, we may have to significantly reduce our spending, delay, or cancel our planned activities or substantially change our corporate structure, and we may not have sufficient resources to conduct our business as planned, which would materially and adversely affect our business, prospects, financial condition, results of operations, and cash flows.

***Our estimated future revenue may not be indicative of actual future revenue or profitability.***

Our estimated future revenue represents, as of a point in time, expected future revenue from work not yet completed under executed contracts. As of December 31, 2024, our estimated future revenue was approximately $890.6 million. While we anticipate a significant amount of our estimated future revenue will be recognized as revenue over one to ten years, our estimated future revenue is subject to order cancellations and delays. We or our customers may attempt to cancel or modify orders in estimated future revenue, and we may not be able to convert all of our estimated future revenue into revenue and cash flows. In addition, if production of products are delayed resulting from parts availability and other constraints stemming from supply chain disruptions, revenue recognition can occur over longer periods of time, and products may remain in estimated future revenue for extended periods of time. If we receive relatively large orders in any given quarter, fluctuations in quarterly levels of estimated future revenue can result because the estimated future revenue may reach levels which may not be sustained in subsequent quarters. Our estimated future revenue should not be relied on as a measure of actual future revenue or profitability.

***If we cannot obtain financing to support the sale of our products and service to our customers or our power purchase agreements with customers, such failure may adversely affect our liquidity and financial position.***

Historically, we have obtained or provided third-party financing sources to finance the sale of our products and services to our customers or our PPAs with our customers. We have experienced, and may experience in the future, difficulty in obtaining or providing adequate financing for these PPA arrangements on acceptable terms, or at all. Failure to obtain or provide such financing has impacted our product sales and results of operations, and may result in the loss of material customers, which could have a material adverse effect on our business, financial condition, and results of operations. Further, we have been required, and may be required in the future, to continue to pledge or restrict substantial amounts of our cash to support these financing arrangements. As a result, such cash will not be available to us for other purposes, which may have a material adverse effect on our liquidity and financial position. For example, as of December 31, 2024, approximately $835.0 million of our cash was restricted to support such leasing arrangements, comprised of cash deposits and collateralizing letters of credit, which prevents us from using such cash for other purposes. Because we are currently focusing more on cash generation, we have paused new PPAs in the fourth quarter of 2023 and have shifted our approach to enable customers to deal directly with banks, which may temper short-term revenue growth. Although we expect PPAs to become a cash source in the near-term and for restricted cash to be released over time, our ability to realize these benefits is not guaranteed.

***Our indebtedness could adversely affect our liquidity, financial condition and our ability to fulfill our obligations and operate our business.***

At December 31, 2024, our total outstanding indebtedness was approximately $729.7 million, which consisted of $173.2 million of the $200.0 million in aggregate principal amount of 6.00% Convertible Debenture due November 11, 2026 (the “6.00% Convertible Debenture”), $147.9 million of the $140.4 million in aggregate principal amount of 7.00% Convertible Senior Notes due June 1, 2026 (the “7.00% Convertible Senior Notes”), $58.3 million of the $58.5 million in aggregate principal amount of 3.75% Convertible Senior Notes due June 1, 2025 (the “3.75% Convertible Senior Notes”), $2.9 million of long-term debt, and $347.4 million of finance obligations consisting primarily of debt associated with sale of future revenues and sale/leaseback financings.

Our indebtedness could have negative consequences on our future operations, including:

- we may have difficulty satisfying our obligations with respect to our outstanding debt;
- we may have difficulty obtaining financing in the future for working capital, capital expenditures, acquisitions, or other purposes;
- our vulnerability to general economic downturns and adverse industry conditions could increase;
- our flexibility in planning for, or reacting to, changes in our business and in our industry in general could be limited; and
- our amount of debt and the amount we must pay to service our debt obligations could place us at a competitive disadvantage compared to our competitors that may have less debt.

Our ability to generate cash to repay our indebtedness is subject to the performance of our business, as well as general economic, financial, competitive, and other factors that are beyond our control. If our business does not generate sufficient cash flow from operating activities or if future borrowings are not available to us in amounts sufficient to enable us to fund our liquidity needs, our operating results, and financial condition may be adversely affected.

***The accounting method for convertible debt securities that may be settled in cash, such as the 7.00% Convertible Senior Notes or the 3.75% Convertible Senior Notes, could have a material effect on our reported financial results.***

Under Accounting Standards Codification (“ASC”) 470-20, *Debt with Conversion and Other Options*, or ASC 470-20, an entity must separately account for the liability and equity components of the convertible debt instruments (such as the 7.00% Convertible Senior Notes or the 3.75% Convertible Senior Notes) that may be settled entirely or partially in cash upon conversion in a manner that reflects the issuer’s economic interest cost. The effect of ASC 470-20 on the accounting for the convertible senior notes is that the equity component is required to be included in the additional paid-in capital section of stockholders’ equity on our consolidated balance sheets at the issuance date and the value of the equity component would be treated as debt discount for purposes of accounting for the debt component of the convertible senior notes. As a result, we are required to record a non-cash interest expense as a result of the amortization of the discounted carrying value of the convertible senior notes to their face amount over the term of the convertible senior notes. As a result, we report larger net losses (or lower net income) in our financial results because ASC 470-20 requires interest to include the amortization of the debt discount, which could adversely affect our reported or future financial results or the trading price of our common stock.

In addition, on January 1, 2021, we early adopted Accounting Standards Update (“ASU”) No. 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40) using the modified retrospective approach. Consequently, the 3.75% Convertible Senior Notes is now accounted for as a single liability measured at its amortized cost. This accounting change removed the impact of recognizing the equity component of the Company’s convertible notes at issuance and the subsequent accounting impact of additional interest expense from debt discount amortization. The cumulative effect of the accounting change upon adoption on January 1, 2021 increased the carrying amount of the 3.75% Convertible Senior Notes by $120.6 million, reduced accumulated deficit by $9.6 million and reduced additional paid-in capital by $130.2 million. Future interest expense of the convertible notes will be lower as a result of adoption of this guidance and net loss per share will be computed using the if-converted method for convertible instruments.

### The convertible note hedges may affect the value of our common stock.

In conjunction with the pricing of the 3.75% Convertible Senior Notes, the Company entered into privately negotiated capped call transactions (the “3.75% Notes Capped Call”) with certain counterparties at a price of $16.3 million. The 3.75% Notes Capped Call cover, subject to anti-dilution adjustments, the aggregate number of shares of the Company’s common stock that underlie the initial 3.75% Convertible Senior Notes and is generally expected to reduce potential dilution to the Company’s common stock upon any conversion of the 3.75% Convertible Senior Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted notes, as the case may be, with such reduction and/or offset subject to a cap based on the cap price. The cap price of the 3.75% Notes Capped Call is initially $6.7560 per share, which represents a premium of approximately 60% over the last then-reported sale price of the Company’s common stock of $4.11 per share on the date of the transaction and is subject to certain adjustments under the terms of the 3.75% Notes Capped Call. The 3.75% Notes Capped Call becomes exercisable if the conversion option is exercised.

The option counterparties and/or their respective affiliates may modify their hedge positions by entering into or unwinding various derivatives with respect to our common stock and/or purchasing or selling our common stock in secondary market transactions prior to the maturity of the 3.75% Convertible Senior Notes (and are likely to do so during any observation period related to a conversion of 3.75% Convertible Senior Notes or following any repurchase of 3.75% Convertible Senior Notes by us on any fundamental change repurchase date or otherwise). This activity could also cause or avoid an increase or a decrease in the market price of our common stock. In addition, if any such convertible note hedge transaction fails to become effective, the option counterparties may unwind their hedge positions with respect to our common stock, which could adversely affect the value of our common stock. The potential effect, if any, of these transactions and activities on the market price of our common stock will depend in part on market conditions and cannot be ascertained at this time. Any of these activities could adversely affect the value of our common stock.

***We are subject to counterparty risk with respect to the convertible note hedge transactions.***

The option counterparties are financial institutions or affiliates of financial institutions and are subject to the risk that one or more of such option counterparties may default under the convertible note hedge transactions. Our exposure to the credit risk of the option counterparties is not secured by any collateral. If any option counterparty becomes subject to bankruptcy or other insolvency proceedings, we will become an unsecured creditor in those proceedings with a claim equal to our exposure at that time under our transactions with that option counterparty. Our exposure will depend on many factors but, generally, an increase in our exposure will be correlated to an increase in our common stock market price and in the volatility of the market price of our common stock. In addition, upon a default by an option counterparty, we may suffer adverse tax consequences and dilution with respect to our common stock. We can provide no assurance as to the financial stability or viability of any option counterparty.

***Unfavorable developments affecting the banking and financial services industry could adversely affect our business, liquidity and financial condition, and overall results of operations.***

Actual events, concerns or speculation about disruption or instability in the banking and financial services industry, such as liquidity constraints or lack of available credit, the failure of individual institutions, or the inability of individual institutions or the banking and financial service industry generally to meet their contractual obligations, could significantly impair our access to capital, delay access to deposits or other financial assets, or cause actual loss of funds subject to cash management arrangements. Similarly, these events, concerns or speculation could result in less favorable financing terms, including higher interest rates or costs and tighter financial and operating covenants, or systemic limitations on access to credit and liquidity sources, thereby making it more difficult for us to acquire financing on acceptable terms or at all. Additionally, our customers, suppliers and other business partners also could be adversely affected by these risks as described above, which in turn could result in their committing a breach or default under their contractual agreements with us, their insolvency or bankruptcy, or other adverse effects.

Any decline in available funding, lack of credit in the market, or access to cash and liquidity resources, or non-compliance of banking and financial services counterparties with their contractual commitments to us, our customers, suppliers and other partners could, among other risks, have material adverse impacts on our ability to meet our operating expenses and other financial needs, could result in breaches of our financial and/or contractual obligations, and could have material adverse impacts on our business, financial condition and results of operations.

### C. OPERATIONAL RISKS

***We may not be able to expand our business or manage our future growth effectively.***

We may not be able to expand our business or manage future growth. We plan to continue to improve our manufacturing processes, which will require successful execution of:

- expanding our existing customers and expanding to new markets;
- ensuring manufacture, delivery, and installation of our products;
- ensuring timely construction and completion of hydrogen generation projects, which may be delayed due to the Company’s inexperience with these project types, supply chain issues, and federal, state, and local permitting and regulatory issues;
- implementing and improving additional and existing administrative, financial and operations systems and procedures and controls;
- integration of acquisitions;
- leveraging existing personnel and/or hiring additional employees;
- expanding and upgrading our technological capabilities;
- managing relationships with our customers and suppliers and strategic partnerships with other third parties;
- maintaining adequate liquidity and financial resources; and
- continuing to increase our revenues from operations.

Ensuring delivery of our products is subject to many market risks, including scarcity, significant price fluctuations, and competition. Maintaining adequate liquidity is dependent upon a variety of factors, including continued revenues from operations, working capital improvements, and compliance with our debt instruments. We may not be able to achieve our growth strategy and increase production capacity as planned during the foreseeable future. If we are unable to manage our growth effectively, we may not be able to take advantage of market opportunities, develop new products, satisfy customer requirements, execute our business plan, or respond to competitive pressures.

***If we fail to maintain effective internal control over financial reporting, we may not be able to accurately report our financial results in a timely manner or prevent fraud and be subject to fines, penalties or judgments, which can harm our reputation or otherwise cause a decline in investor confidence.***

The Sarbanes-Oxley Act requires, among other things, that we maintain effective internal control over financial reporting and disclosure controls and procedures. In particular, we must perform system and process evaluation and testing of our internal control over financial reporting to allow management to report on the effectiveness of our internal control over financial reporting, as required by Section 404 of the Sarbanes-Oxley Act. Our testing may reveal deficiencies in our internal control over financial reporting that are deemed to be material weaknesses. If we fail to maintain effective internal control over financial reporting, we may not be able to accurately report our financial results in a timely manner or prevent fraud and be subject to fines, penalties or judgments, which can harm our reputation or otherwise cause a decline in investor confidence.

***Delays in or not completing our product and project development goals or products experiencing technical defects may adversely affect our revenue and profitability.***

Delays in meeting our development goals (including delivery of electrolyzers to customers, as well as the completion of hydrogen generation projects), products experiencing technical defects, or delays in meeting cost or performance goals (including power output) will delay the profitable commercialization of our products. If such an event or events occur, potential purchasers of our products may choose alternative technologies and any delays could allow potential competitors to gain market advantages. We cannot assure that we will successfully meet our commercialization schedule in the future.

Periodically, we may enter into contracts with our customers for certain products that have not been developed or produced. There can be no assurance that we will complete the development of these products and meet the specifications required to fulfill customer agreements and deliver products on schedule. Pursuant to such agreements, the customers would have the right to provide notice to us if, in their good faith judgment, we have materially deviated from such agreements. Should a customer provide such notice, and we cannot mutually agree to a modification to the agreement, then the customer may have the right to terminate the agreement, which could have a material adverse effect upon our future business.

Other than our current products, which we believe to be commercially viable at this time, we do not know when or whether we will successfully complete research and development of other commercially viable products that could be critical to our future. If we are unable to develop additional commercially viable products we may not be able to become profitable. The profitable commercialization of our products depends on our ability to reduce the costs of our components and subsystems, and we cannot assure you that we will be able to sufficiently reduce these costs. In addition, the profitable commercialization of our products requires achievement and verification of their overall reliability, efficiency and safety targets, and we cannot assure you that we will be able to develop, acquire or license the technology necessary to achieve these targets. We must complete additional research and development to fill our product portfolios and deliver enhanced functionality and reliability in order to manufacture additional commercially viable products in commercial quantities. In addition, while we continue to conduct tests to predict the overall life of our products, we may not have run our products over their projected useful life prior to large-scale commercialization. As a result, we cannot be sure that our products will last as long as predicted, resulting in possible warranty claims and commercial failures.

***Our purchase orders may not ship, be commissioned or installed, or convert to revenue, which could have an adverse impact on revenue and cash flow.***

Some of the orders we accept from customers require certain conditions or contingencies to be satisfied, or may be cancelled, prior to shipment or prior to commissioning or installation, some of which are outside of our control. Orders for the Company’s products and services approximated $890.6 million as of the year ended December 31, 2024. The time periods from receipt of an order to shipment date and installation vary widely and are determined by a number of factors, including the terms of the customer contract and the customer’s deployment plan. For example, we have experienced delays in product launches, and there may also be product redesign or modification requirements that must be satisfied prior to shipment of units under certain of our agreements. If the designs are not finalized on schedule or the redesigns or modifications are not completed, some or all of our orders may not ship or convert to revenue. In certain cases, we disclose anticipated, pending orders with prospective customers for our various products, including PEM fuel cell, electrolyzer, stationary product and hydrogen sales; however, those prospective customers may require certain conditions or contingencies to be satisfied prior to entering into a purchase order with us, some of which are outside of our control. Such conditions or contingencies that may be required to be satisfied before we receive a purchase order may include, but are not limited to, successful product demonstrations or field trials. Converting orders into revenue is also dependent upon our customers’ ability to obtain financing. Some conditions or contingencies that are out of our control may include, but are not limited to, government tax policy, government funding programs, and government incentive programs. Additionally, some conditions and contingencies may extend for several years. We may have to compensate customers, by either reimbursement, forfeiting portions of associated revenue, or other methods depending on the terms of the customer contract, based on the failure on any of these conditions or contingencies, which could have an adverse impact on our revenue and cash flow.

***Our future plans could be harmed if we are unable to leverage, attract or retain key personnel.***

We have attracted a highly skilled management team and specialized workforce, including scientists, engineers, researchers, manufacturing, and marketing and sales professionals. Our future success will depend, in part, on our ability to leverage, attract and retain qualified management and technical personnel. However, we do not know whether we will be successful in leveraging or retaining qualified personnel. Furthermore, our ability to retain key employees could be adversely impacted if we do not have a sufficient number of shares available under our equity incentive plan to issue to our employees, or if our stockholders do not approve requested share increases or a new equity incentive.

In February 2024, we announced the cost-reduction initiatives that included strategic workforce adjustments as well as other expense reduction initiatives (the “2024 Restructuring Plan”). These initiatives may as yet yield unintended consequences and result in unforeseen costs well beyond the execution of the 2024 Restructuring Plan, such as the loss of institutional knowledge and expertise, attrition beyond our intended workforce adjustments, a reduction in morale among our remaining employees and adverse impact to our reputation as an employer, which may make it difficult for us to continue to retain remaining employees or hire new employees now or in the future. In addition, we may be unsuccessful in distributing the duties and obligations of departed employees among our remaining employees or to external service providers. If we are not able to successfully manage the above, there may be a material adverse impact on our business, financial condition and results of operations. In addition, we may need to undertake additional workforce reductions or restructuring activities in the future. Additionally, in March 2025, we announced cost-reduction initiatives that are anticipated to include strategic workforce adjustments, facility consolidation, and other expense reduction initiatives (the “2025 Restructuring Plan”) that may not achieve the anticipated benefits and may yield unintended consequences and costs that are not fully realized until this year, such as the loss of institutional knowledge and expertise, attrition beyond our intended workforce adjustments, a reduction in morale among our remaining employees and adverse impact to our reputation as an employer, which may make it difficult for us to continue to retain remaining employees this year or hire new employees now or in the future.

In general, our industry continues to experience change and be subject to significant competitive pressures with respect to the retention of top talent. The loss of key employees may occur due to perceived opportunity for promotion, compensation levels or composition of compensation, work environment or other individual reasons. We have from time-to-time experienced, and we may in the future experience, labor shortages and other labor-related issues. A number of factors might adversely affect the labor force available to us in one or more of our markets, including high employment levels, federal unemployment subsidies, and other government regulations, which include laws and regulations related to workers’ health and safety, wage and hour practices and immigration, and such factors can also impact the cost of labor. The Trump Administration has issued several executive orders restricting immigration and may, either through executive authority or through new legislation, impose additional restrictions. These and any future changes in immigration laws and enforcement policies could impact the availability and cost of labor. In addition, the IRA includes certain prevailing wage requirements related to tax credit availability which may impact labor costs of the Company and our contractors and subcontractors going forward. An increase in labor costs and the unavailability of skilled labor (including apprentices) or increased turnover could have a material adverse effect on our results of operations. The loss or interruption of the services by any of our key employees, the inability to identify, attract or to hire qualified personnel in the future, the inability to successfully implement executive officer, key employee or other personnel transitions, or delays in hiring qualified personnel could materially and adversely affect our development and profitable commercialization plans and, therefore, our business prospects, results of operations and financial condition.

***We are subject to legal proceedings and legal compliance risks that could harm our business.***

We are currently, and in the future may continue to be, subject to legal proceedings and similar disputes. In connection with any disputes or litigation in which we are involved, we may incur costs and expenses in connection with defending ourselves or in connection with the payment of any settlement or judgment or compliance with any ruling in connection therewith. It is often challenging to predict the outcome of legal proceedings and similar disputes with certainty. Determining reserves for any litigation is a complex and fact-intensive process that requires significant judgment calls. There can be no assurance that our expectations will prove correct, and even if these matters are resolved in our favor or without significant cash settlements, these matters, and the time and resources necessary to litigate or resolve them, including diversion of management resources, could have a material adverse effect on our business, results of operations, financial condition and cash flows. See Note 23, “Commitments and Contingencies”.

***Certain component quality issues have resulted in adjustments to our warranty reserves and the accrual for loss contracts.***

In the past, quality issues have arisen with respect to certain components in certain products that are currently being used at customer sites. Under the terms of our extended maintenance contracts, we have had to retrofit units subject to component quality issues with replacement components to improve the reliability of our products for our customers. We recorded a provision for loss contracts related to service in the current and prior years. Though we continue to work with our vendors on these component issues to improve quality and reliability, unanticipated additional quality issues or warranty claims may arise, and additional material charges may be incurred in the future. Quality issues also could cause profitable maintenance contracts to become unprofitable.

In addition, from time to time we have experienced other unexpected design, manufacturing or product performance issues, which has led to delayed delivery dates. We make significant investment in the continued improvement of our products and maintain appropriate warranty reserves for known and unexpected issues; however, unknown malfunctions or defects could result in unexpected material liabilities and could adversely affect our business, financial condition, results of operation, cash flows and prospects. In addition, an actual or perceived problem could adversely affect the market’s perception of our products resulting in a decline in demand for our products and could divert the attention of our management, which may materially and adversely affect our business, financial condition, results of operations, cash flows, and prospects.

***We are dependent on information technology in our operations and the failure of such technology may adversely affect our business. Security breaches of our information technology systems, including cyber-attacks, ransomware attacks, or use of malware or phishing or other malicious techniques by threat actors, have in the past and could in the future impact our operations or lead to liability, or damage our reputation and financial results.***

We have in the past experienced and may in the future experience problems with the operation of our current information technology systems or the technology systems of third parties on which we rely, as well as the development and deployment of new information technology systems, that could adversely affect, or even temporarily disrupt, all or a portion of our operations until resolved. The inability to implement new systems or delays in implementing new information technology systems may also affect our ability to realize projected or expected cost savings. Additionally, the inability to implement or any delays in implementing new security measures can also affect our ability to protect against increasingly sophisticated threat actors. Any systems failures could impede our ability to timely collect and report financial results in accordance with applicable laws.

Information technology system and/or network disruptions could harm the Company’s operations. Failure to effectively prevent, detect, and recover from security compromises or breaches, including cyber-attacks, could result in the misuse of company assets, unauthorized use or publication of our trade secrets and confidential business information, disruption to the company, diversion of management resources, regulatory inquiries, legal claims or proceedings, reputational damage, loss of sales, reduction in value of our investment in research and development, among other costs to the company. Although we believe risks from cybersecurity threats have not to date materially affected us, we have experienced and may continue to experience both successful and unsuccessful attempts to gain unauthorized access to our information technology systems on which we maintain proprietary and confidential information. For example, in or around March 2023, an unauthorized actor accessed our computer network and executed a ransomware attack, resulting in the encryption of certain of our computer systems, including systems used to store proprietary and confidential data, and exfiltration of personal information related to certain individuals. Upon detection, we took immediate steps to contain, assess and remediate the incident, including engaging outside legal counsel and external forensic investigators. We restored the affected systems and our business remained operational with no material disruption during the restoration period.

The risk of a security compromise, breach, or disruption, particularly through cyber-attacks, or cyber intrusion, including by computer hackers, insider threats, and cyber terrorists, has generally increased as cyber-attacks have become more prevalent and harder to detect and fight against and threat actors continue to become more sophisticated in their malicious techniques. Additionally, outside or unauthorized parties may attempt to access our confidential information through other means, for example by fraudulently inducing our employees to disclose confidential information through phishing emails or deceptive advertising campaigns. We actively seek to prevent, detect, and investigate any unauthorized access. These threats are also continually evolving, and as a result, will become increasingly difficult to detect. In addition, the increased prevalence of employees working from home may exacerbate the aforementioned cybersecurity risks. Despite the implementation of network security measures, our information technology system has been and could be penetrated by outside or unauthorized parties. To date, these risks, threats or attacks have not had a material impact on our operations, business strategy or financial results, but we cannot provide assurance that they will not have a material impact in the future. Going forward, we may expend additional resources, expenses, and legal and professional fees to further enhance the security of our information technology systems and continually assess our current security measures. In addition, we may be subject to governmental investigations, enforcement actions, regulatory fines or litigation, or we may suffer from reputational damage or public statements against us as a result of unauthorized access to our information technology systems.

***The delays in the implementation of a new enterprise resource planning system could cause disruption to our operations.***

The delays in the implementation of a new enterprise resource planning (“ERP”) system in 2024 could impede our ability to manufacture products, order materials, generate management reports, invoice customers, and comply with laws and regulations. Any of these types of disruptions could have a material adverse effect on our net sales and profitability. In addition, the implementation of the new ERP system will require significant investment of human and financial resources. We may experience delays, increased costs and other difficulties, including potential design defects, miscalculations, testing requirements, re-work due to changes in business plans or reporting standards, and the diversion of management’s attention from day-to-day business operations. Extended delays could include operational risk, including cybersecurity risks, and other complications. If we are unable to implement the new ERP system as planned, the effectiveness of our internal control over financial reporting could be adversely affected, our ability to assess those controls adequately could be delayed, and our business, results of operations, financial condition and cash flows could be negatively impacted.

***We may not be able to protect important intellectual property and we could incur substantial costs defending against claims that our products infringe on the proprietary rights of others.***

PEM fuel cell technology was first developed in the 1950s, and fuel processing technology has been practiced on a large scale in the petrochemical industry for decades. Accordingly, we do not believe that we can establish a significant proprietary position in the fundamental component technologies in these areas. However, our ability to compete effectively will depend, in part, on our ability to protect our proprietary system-level technologies, systems designs and manufacturing processes. We rely on patents, trademarks, trade secrets, and other policies and procedures related to confidentiality to protect our intellectual property. However, some of our intellectual property is not covered by any patent or patent application. Moreover, we do not know whether any of our pending patent applications will issue or, in the case of patents issued or to be issued, that the claims allowed are or will be sufficiently broad to protect our technology or processes. Even if all of our patent applications are issued and are sufficiently broad, our patents may be challenged or invalidated. We could incur substantial costs in prosecuting or defending patent infringement suits or otherwise protecting our intellectual property rights. For example, we have been subject to a lawsuit against Joule Processing, LLC and Plug Power Inc., which alleges misappropriation of trade secrets under the federal Defend Trade Secrets Act of 2016, among other complaints. See Note 23, “Commitments and Contingencies”. While we have attempted to safeguard and maintain our proprietary rights, we do not know whether we have been or will be completely successful in doing so. Moreover, patent applications filed in foreign countries may be subject to laws, rules and procedures that are substantially different from those of the United States, and any resulting foreign patents may be difficult and expensive to obtain and enforce. In addition, we do not know whether the USPTO will grant federal registrations based on our pending trademark applications. Even if federal registrations are granted to us, our trademark rights may be challenged. It is also possible that our competitors or others will adopt trademarks similar to ours, thus impeding our ability to build brand identity and possibly leading to customer confusion. We could incur substantial costs in prosecuting or defending trademark infringement suits.

Furthermore, we might encounter difficulties protecting intellectual property rights in foreign jurisdictions. Certain jurisdictions do not favor the enforcement of patents, trade secrets, and other intellectual property protection. Enforcement of our intellectual property and proprietary rights in foreign jurisdictions could result in substantial costs and adverse impacts to our intellectual property rights.

Further, our competitors may independently develop or patent technologies or processes that are substantially equivalent or superior to ours. If we are found to be infringing third party patents, we could be required to pay substantial royalties and/or damages, and we do not know whether we will be able to obtain licenses to use such patents on acceptable terms, if at all. Failure to obtain needed licenses could delay or prevent the development, manufacture or sale of our products, and could necessitate the expenditure of significant resources to develop or acquire non-infringing intellectual property.

We may need to pursue lawsuits or legal action in the future to enforce our intellectual property rights, to protect our trade secrets and domain names, and to determine the validity and scope of the proprietary rights of others. If third parties prepare and file applications for trademarks used or registered by us, we may oppose those applications and be required to participate in proceedings to determine the priority of rights to the trademark. Similarly, competitors may have filed applications for patents, may have received patents and may obtain additional patents and proprietary rights relating to products or technology that block or compete with ours. We may have to participate in interference proceedings to determine the priority of invention and the right to a patent for the technology. Litigation and interference proceedings, even if they are successful, are expensive to pursue and time consuming, and we could use a substantial amount of our management and financial resources in either case.

Confidentiality agreements to which we are party may be breached, and we may not have adequate remedies for any breach. Our trade secrets may also be known without breach of such agreements or may be independently developed by competitors. Our inability to maintain the proprietary nature of our technology and processes could allow our competitors to limit or eliminate any competitive advantages we may have.

***Our financial results may be adversely affected by changes in accounting principles generally accepted in the United States.***

Generally accepted accounting principles in the United States (“GAAP”) is subject to interpretation by the FASB, the American Institute of Certified Public Accountants, the SEC and various bodies formed to promulgate and interpret appropriate accounting principles. See Note 2, “Summary of Significant Accounting Policies”, to our consolidated financial statements included in this Annual Report on Form 10-K regarding the effect of new accounting pronouncements on our financial statements. Any difficulties in implementing these pronouncements could cause us to fail to meet our financial reporting obligations, which could result in regulatory discipline and harm investors’ confidence in us. Further, the implementation of new accounting pronouncements or a change in other principles or interpretations could have a significant effect on our financial results.

***If our estimates or judgments relating to our critical accounting policies are based on assumptions that change or prove to be incorrect, our operating results could fall below expectations of investors, resulting in a decline in our stock price.***

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in our consolidated financial statements and accompanying notes. For example, our revenue recognition, loss accrual for service contracts, goodwill and impairment of long-lived assets policies are complex, and we often must make estimates and assumptions that could prove to be incorrect. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. Significant assumptions and estimates used in preparing our consolidated financial statements include those related to revenue recognition, valuation of inventories, loss accrual for service contracts, impairment of long-lived assets, and provision for common stock warrants. Our operating results may be adversely affected if our assumptions change or if actual circumstances differ from those in our assumptions, which could cause our operating results to fall below the expectations of investors, resulting in a decline in our stock price.

***Our products use, or generate, flammable fuels that are inherently dangerous substances, which could subject our business to product safety, product liability, other claims, product recalls, negative publicity, or heightened regulatory scrutiny of our products.***

Our fuel cell systems use hydrogen gas in catalytic reactions. While our products do not use this fuel in a combustion process, hydrogen gas is a flammable fuel that could leak and combust if ignited by another source. Further, any such accidents involving our products or other products using similar flammable fuels could materially suppress demand for, or heighten regulatory scrutiny of, our products. Our expansion into electrolyzer manufacturing, hydrogen production, and the transport of hydrogen fuel similarly involve hydrogen in either gaseous or liquified form. Additionally, the production of hydrogen through electrolysis also results in the generation of oxygen. As a result, oxygen must be separated and controlled during the hydrogen production process. Such activities are subject to potential risks and liabilities associated with flammable gases.

The risk of product liability claims and associated adverse publicity is inherent in the development, manufacturing, marketing and sale of fuel cell products, electrolyzers, hydrogen production, and in products fueled by hydrogen, which is a flammable gas. Any liability for damages resulting from malfunctions or design defects could be substantial and could materially adversely affect our business, financial condition, results of operations and prospects. In addition, an actual or perceived problem with our products could adversely affect the market’s perception of our products resulting in a decline in demand for our products, which may materially and adversely affect our business, financial condition, results of operations and prospects. See Note 23, “Commitments and Contingencies”.

***Our success depends on our ability to improve our financial and operational performance and execute our business strategy.***

If we fail to implement our business strategy, our financial condition and results of operations could be adversely affected. Our future financial performance and success depend in large part on our ability to successfully implement our business strategy. We cannot assure you that we will be able to successfully implement our business strategy or be able to continue improving our operating results. In particular, we cannot assure you that we will be able to successfully execute our ongoing, or any future, investments, achieve operating cost savings targeted through focused improvements and capacity optimization, including improvements to service performance through scale of manufacturing and vertical integration, and opportunistically pursue strategic transactions. Implementation of our business strategy may be impacted by factors outside of our control, including competition, commodity price fluctuations, industry, legal and regulatory changes or developments and general economic and political conditions. Any failure to successfully implement our business strategy could adversely affect our financial condition and results of operations. We may, in addition, decide to alter or discontinue certain aspects of our business strategy at any time.

Although we have undertaken and expect to continue to undertake productivity and manufacturing system and process transformation initiatives to improve service performance, we cannot assure you that all of these initiatives will be completed or that any estimated cost savings from such activities will be fully realized. Even when we are able to generate new efficiencies in the short- to medium-term, we may not be able to continue to reduce costs and increase productivity over the long-term. There can be no assurance if and when any of these initiatives will be successfully and fully executed or completed.

### D. REGULATORY RISKS

***The funding of the loan guarantee from the Department of Energy may be delayed, and we may not be able to satisfy all of the technical, legal, environmental or financial conditions acceptable to the Department of Energy to receive the loan guarantee.***

As previously announced, the Company received a conditional commitment for an up to $1.66 billion loan guarantee from the DOE Loan Programs Office to finance the development, construction, and ownership of up to six green hydrogen production facilities. Our ability to benefit from this loan guarantee is subject to certain technical, legal, environmental and financial conditions, including negotiation of definitive financing documents, to be satisfied before funding of the loan guarantee. Whether and when our DOE loan guarantee will be funded is subject to a number of factors outside of our control, including political administration changes, legislative enactments, administrative actions. The funding of such loan guarantee may take longer than we expect, and if we are not able to satisfy all of the technical, legal, environmental or financial conditions acceptable to the DOE to receive the loan guarantee, our business may be adversely affected.

***The reduction or elimination of government subsidies and economic incentives for alternative energy technologies, or the failure to renew such subsidies and incentives, could reduce demand for our products, lead to a reduction in our revenues, and adversely impact our operating results and liquidity. The Company’s ability to benefit from these subsidies and incentives is not guaranteed.***

We believe that the near-term growth of alternative energy technologies will be affected by the availability and size of government and economic incentives. Many of these government incentives expire, phase out over time, may be reduced or discontinued, no longer have available funding, may be implemented differently by changes in administrative agencies, or require renewal by the applicable authority. For example, the IRA contained hundreds of billions in credits and incentives for the development of renewable energy, clean hydrogen, clean fuels, EVs and supporting infrastructure and carbon capture and sequestration, among other provisions. The IRA contains numerous tax incentives relevant to us, including: (i) the Section 45V Credit for Production of Clean Hydrogen, which provides a production tax credit of up to $3 per kg of qualified clean hydrogen over a 10-year credit period for the production of qualified clean hydrogen at a qualified facility in the United States; (ii) the extension and amendment of the Section 48 Investment Tax Credit (“ITC”) through 2024 for fuel cells and energy storage property; (iii) and the new Section 48E Clean Electricity Investment Tax Credit, which provides a tax credit for investment in facilities that generate “zero emissions” electricity or store energy, among other provisions. In the more than two years since enactment, numerous rulemakings have imposed additional, and sometime unanticipated, strictures on IRA incentives. As discussed below, the impact of these regulatory requirements – namely the Company’s ability to qualify for IRA incentives, is still not fully known. Further, it is uncertain how the new political administration will interpret and implement the IRA – in particular, for recently published regulations immediately predating the change in political administration. The Trump administration may seek to jettison recently promulgated regulations, and further, Congress may similarly seek to review certain Biden administration regulations or entirely repeal enactments and programs under the IRA or the Infrastructure Investment & Jobs Act (“IIJA”). Relatedly, the Trump administration’s executive orders suspending disbursements under the IRA and/or IIJA may have materially adverse impact on the Company. The scope and impact of this executive order are unknown; however, the Company has substantially relied upon numerous tentative forms of federal incentives under the IRA and/or IIJA, including but not limited to grants for R&D activities, programmatic funding, and direct pay tax incentives. Depending upon the breath of implementation, the executive order could have a materially adverse impact on the Company.

The Company’s ability to ultimately benefit from IRA tax credits and incentives is not guaranteed and is dependent upon its ability to comply with the federal government’s implementation, guidance, rulemakings, and/or regulations or such incentives and programs. For example, there is no guarantee that the Company’s projects will comply with the final Section 45V regulations promulgated in December 2025 – in particular, temporal matching, incrementality, and regionality limitations on the use of renewable energy credits and environmental attributes.

Similarly, the Company’s fuel cell products may not qualify for any investment tax credit. The final regulations for the Section 48E Clean Electricity Investment Credit provide onerous strictures for fuel cell credit eligibility – namely compliance with the credit’s “zero emissions” criteria, which could likely require a fuel cell’s exclusive use of electrolytic hydrogen. There is no guarantee that the Company will be able to comply with Section 48E’s proposed standards for fuel cells. The effect of the final regulations on our business is not yet known but if we are not able to comply with the final eligibility requirements and our competitors are able to do so, our business may be adversely affected. Concurrently, the preexisting Section 48 ITC was only available for fuel cells projects beginning construction before January 1, 2025. There is no guarantee that Congress will seek to extend the recently expired Section 48 ITC for fuel cells. As a result of the Section 48E final regulations, compounded with the expiration of the Sectio 48 ITC for fuel cells, no federal investment tax credit may be available for the Company’s fuel cell products.

Furthermore, political administration changes, future legislative enactments, administrative actions, expiration or changes to clean energy tax credits, policies or other incentives might be more favorable to other technologies or could limit, amend, repeal, or terminate policies or other incentives that the Company currently hopes to leverage, such as the U.S. Department of Energy Loan Programs Office Loan Guarantee. For example, the Section 48 ITC for qualified fuel cell properties expired for fuel cell properties beginning construction after December 31, 2024, and as a result, there is no guarantee that Plug’s fuel cell product will qualify for any federal tax credit thereafter. Any reduction, elimination, or discriminatory application of expiration of tax incentives or other government subsidies and economic incentives, or the failure to renew such tax credits, governmental subsidies, or economic incentives, may result in the diminished economic competitiveness of our products to our customers and could materially and adversely affect the growth of alternative energy technologies, including our products, as well as our future operating results and liquidity.

***Changes in U.S. or foreign trade policies, treaties, tariffs and taxes as well as geopolitical conditions and other factors could have a material adverse effect on our business.***

Our business is dependent on the availability of raw materials and components for our products, particularly electrical components common in the semiconductor industry. Our business is subject to risks generally associated with doing business abroad, such as U.S. and foreign governmental regulation in the countries in which we operate and the countries in which our manufacturers, component suppliers, and other business partners are located. For example, geopolitical conflicts, including the ongoing war between Russia and Ukraine and related sanctions against Russia, the ongoing conflicts in the Middle East, any potential worsening or expansion of these conflicts and wars, and U.S.-China relations, could impact supply chains, trade and movement of resources and the price of commodities and affect our ability to obtain raw materials. Although we currently maintain alternative sources for raw materials, if we are unable to source our products from the countries where we wish to purchase them, either because of the occurrence or threat of wars or other conflicts, regulatory changes or for any other reason, or if the cost of doing so increases, it could have a material adverse effect on our business, financial condition and results of operations. Disruptions in the supply of raw materials and components could temporarily impair our ability to manufacture our products for our customers or require us to pay higher prices to obtain these raw materials or components from other sources, which could have a material adverse effect on our business and our results of operations. In addition, further escalation of these geopolitical conflicts, including increased trade barriers or restrictions on global trade, could result in, among other things, cyberattacks, , further increases or fluctuations in commodity and energy prices, further disruptions to the global supply chain and other adverse effects on macroeconomic conditions.

Beyond tariffs and sanctions, countries also could adopt other measures, such as taxes or controls on imports or exports of goods, which could adversely affect our operations and supply chain. For example, effective February 4, 2025, the U.S. government implemented an additional tariff on goods being imported from China and announced additional tariffs for goods imported into the U.S. from Mexico and Canada beginning in March 2025. The Company cannot predict what additional changes to trade policy will be made by the presidential administration or Congress, including whether existing tariff policies will be maintained or modified, what products may be subject to such policies or whether the entry into new bilateral or multilateral trade agreements will occur, nor can the Company predict the effects that any such changes would have on its business. However, such steps, if adopted, could increase the Company’s costs and adversely impact its business and operations. In addition, changes in U.S. trade policy have resulted, and could again result, in reactions from U.S. trading partners, including adopting responsive trade policies. For example, in response to the U.S. government’s additional tariff on imports from China, on February 4, 2025, the Chinese government announced that it would implement a tariff on certain goods being imported into China from the U.S. These changes in U.S. trade policy or in laws and policies governing foreign trade, and any resulting negative sentiments towards the United States as a result of such changes, could have an adverse impact on our business, financial position, results of operations, and liquidity.

***We are subject to various federal, state, local and non-U.S. environmental and human health and safety laws and regulations that could impose significant costs and liabilities on us and impact our business practices, including climate change and environmental, social and governance (“ESG”) reporting requirements.***

Our operations are subject to federal, state, local and non-U.S. environmental and human health and safety laws and regulations, including laws and regulations relating to the use, handling, storage, transportation, disposal and human exposure to hazardous substances and wastes, product safety, emissions of pollution into the environment, and human health and safety. We have incurred, and expect to continue to incur, costs to comply with these laws and regulations. These costs and obligations are likely to expand and change as our Company grows, makes acquisitions, and conducts business in new locations. Furthermore, federal, state, and local governments are increasingly regulating and restricting the use of certain chemicals, substances, and materials. Some of these policy initiatives could foreseeably be impactful to our business. For example, laws, regulations, or other policy initiatives might address substances found within component parts to our products, in which event our Company would be required to comply with such requirements.

Our facilities in the U.S. are subject to regulation by OSHA, which regulates the protection of the health and safety of workers. In addition, the OSHA hazard communication standard requires that we maintain information about hazardous materials used or produced in our operations and that we provide this information to employees, state and local governmental authorities and local residents. We are also subject to occupational safety regulations in other countries. Our failure to comply with government occupational safety regulations, including OSHA requirements, or general industry standards relating to employee health and safety, keep adequate records or monitor occupational exposure to regulated substances could expose us to liability, enforcement, and fines and penalties, and could have a material adverse effect on our business, operating results, cash flows, or financial condition. Violation of these laws or regulations or the occurrence of an explosion or other accident in connection with our fuel cell systems at our properties or at third party locations could lead to injuries, property damage, litigation, substantial liabilities and sanctions, including fines and penalties, cleanup costs, manufacturing delays or the requirement to undertake corrective action. Further, environmental laws and human health and safety and regulations, and the administration, interpretation, and enforcement thereof, are subject to change and may become more stringent in the future, each of which could materially adversely affect our business, financial condition, and results of operations. Each of these considerations is further magnified by our expansion into new regulatory jurisdictions with which we may be unfamiliar.

Additionally, certain environmental laws impose liability, which can be joint and several, as well as strict, on current and previous owners and operators of real property for the cost of removal or remediation of hazardous substances and damage to natural resources. These laws often impose liability even if the owner or operator did not know of, or was not responsible for, the release of such hazardous substances. They can also assess liability on persons who arrange for hazardous substances to be sent to disposal or treatment facilities when such facilities are found to be contaminated, and such persons can be responsible for cleanup costs even if they never owned or operated the contaminated facility. Our liabilities arising from past or future releases of, or exposure to, hazardous substances may adversely affect our business, financial condition, and results of operations.

Corporate responsibility practices and ratings are important to some investors and other stakeholders who may have differing and conflicting views as to their preferred approach to corporate responsibility matters. Expectations regarding corporate responsibility may impact our business practices and the price of our securities. Changing practices have in the past and may in the future include expanded mandatory and voluntary reporting, diligence, and disclosure on topics such as climate change, human capital, inclusion and diversity, labor, and risk oversight, and these could expand the nature, scope, and complexity of matters that we are required to control, assess and report on, which may prove difficult, expensive and time consuming. In addition, the adoption of increased government regulations and changes in investor preference related to corporate responsibility matters may result in changes to our business practices, including increasing expenses or capital expenditures. We have communicated certain initiatives regarding ESG matters and we may in the future communicate revised or additional initiatives. If our initiatives are unsuccessful or we fail to satisfy the expectations of investors, employees and other stakeholders, our reputation could be adversely affected. In recent years, corporate initiatives relating to ESG matters, including workplace diversity, equity and inclusion, have attracted negative commentary and regulatory attention in the broader business sector. Legislation, regulatory initiatives, litigation, legal opinions, federal executive orders and increased scrutiny related to corporate responsibility matters could expose the Company to additional compliance obligations, costs, and potential liabilities.

We acknowledge the significant challenge presented by climate change, and see our transformational work in developing cost-effective, renewable hydrogen, and fuel cell energy as part of the solution. Our commitment to sustainability is deeply rooted in our products, mission, core values, and people. However, we acknowledge that climate change will potentially have wide-ranging impacts, including potential impacts to our Company. Unanticipated environmental, societal, economic, or geopolitical effects of climate change might affect business operations. For example, increasingly severe and frequent weather events might disrupt our supply chain or adversely affect our customers. Relatedly, government policies addressing climate change could similarly impact our business operations. There is no guarantee that such potential changes in laws, regulations, or policies will be favorable to our Company, our technologies, to existing or future customers, or to large-scale economic, environmental, or geopolitical conditions.

### Our business is subject to government regulation.

Our products are subject to certain federal, state, local, and non-U.S. laws and regulations, including, for example, state and local ordinances relating to building codes, fire codes, public safety, electrical and gas pipeline connections, hydrogen transportation and siting and related matters. See Item 1, “Business — Government Regulations” for additional information. In certain jurisdictions, these regulatory requirements may be more stringent than those in the United States. Further, as products are introduced into the market commercially, governments may impose new regulations. We do not know the extent to which any such regulations may impact our ability to manufacture, distribute, install and service our products. Any regulation of our products, whether at the federal, state, local or foreign level, including any regulations relating to the production, operation, installation, and servicing of our products may increase our costs and the price of our products, and noncompliance with applicable laws and regulations could subject us to investigations, sanctions, enforcement actions, fines, damages, civil and criminal penalties, or injunctions. Furthermore, certain business activities may require the Company to navigate a myriad of state or local-level laws and regulations. If any governmental sanctions are imposed, our business, operating results, and financial condition could be materially adversely affected. In addition, responding to any action will likely result in a significant diversion of management’s attention and resources and an increase in professional fees. Enforcement actions and sanctions could harm our business, operating results and financial condition.

There is no guarantee that local, state, federal, or international jurisdictions will adopt laws, regulations and policies that are favorable to hydrogen or fuel cell technologies. As various jurisdictions pursue climate change and decarbonization policies, hydrogen and fuel cell technologies may be subject to increased regulatory scrutiny and oversight.

***Changes in tax laws or regulations or adverse outcomes resulting from examination of our income or other tax returns could adversely affect our operating results and financial condition.***

We are subject to income taxes in the United States and various foreign jurisdictions. A number of factors may adversely affect our future effective tax rates, such as the jurisdictions in which our profits are determined to be earned and taxed; changes in the valuation of our deferred tax assets and liabilities; adjustments to estimated taxes upon finalization of various tax returns; changes in available tax credits, grants and other incentives; changes in stock-based compensation expense; the availability of loss or credit carryforwards to offset taxable income; changes in tax laws, regulations, accounting principles or interpretations thereof; or examinations by U.S. federal, state or foreign jurisdictions that disagree with interpretations of tax rules and regulations in regard to positions taken on tax filings. A change in any of our effective tax rates due to any of these factors may adversely affect the carrying value of our tax assets and our future results from operations.

In addition, as our business grows, we are required to comply with increasingly complex taxation rules and practices. We are subject to tax in multiple U.S. tax jurisdictions and in foreign tax jurisdictions as we expand internationally, which requires additional expertise to ensure compliance with various domestic and international tax laws. The development of our global tax footprint and compliance with these laws may impact how we conduct our business and affect our financial position, operating results, and cash flows.

***The changes in the carryforward/carryback periods as well as the new limitation on use of net operating losses (“NOLs”) may significantly impact our valuation allowance assessments for NOLs.***

Changes in U.S. federal income or other tax laws or the interpretation of tax laws, including the Inflation Reduction Act, as passed by Congress in August 2022, may impact our tax liabilities. As of December 31, 2024, we had federal NOL carryforwards of $3.0 billion, which begin to expire in various amounts and at various dates in 2033 through 2037 (other than federal NOL carryforwards generated after December 31, 2017, which are not subject to expiration). As of December 31, 2024, we also had federal research and development tax credit carryforwards of $24.7 million, which begin to expire in 2033. Utilization of our NOLs and research and development tax credit carryforwards may be subject to a substantial annual limitation if the ownership change limitations under Sections 382 and 383 of the Internal Revenue Code of 1986, as amended (the “Code”), and similar state provisions are triggered by changes in our ownership. In general, an ownership change occurs if there is a cumulative change in the ownership of the Company by “5-percent shareholders” that exceed 50 percentage points over a rolling three-year period. Based on studies of the changes in ownership of the Company, it has been determined that a Section 382 ownership change occurred in 2013 that limited the amount of pre-change NOLs that can be used in future years. NOLs incurred after the most recent ownership change are not subject to Section 382 of the Code and are available for use in future years. If we undergo any ownership changes, our ability to utilize our NOL carryforwards or research and development tax credit carryforwards could be further limited by Sections 382 and 383 of the Code. In addition, future changes in our stock ownership, many of which are outside of our control, could result in an ownership change under Sections 382 and 383 of the Code. Any such limitation may significantly reduce our ability to utilize our NOL carryforwards and research and development tax credit carryforwards before they expire. Our NOL carryforwards and research and development tax credit carryforwards may also be impaired under state law. Accordingly, we may not be able to utilize a material portion of our NOL carryforwards or research and development tax credit carryforwards.

The Coronavirus Aid, Relief and Economic Security Act modified, among other things, rules governing NOLs. NOLs arising in tax years beginning after December 31, 2017 are subject to an 80% of taxable income limitation (as calculated before taking the NOLs into account) for tax years beginning after December 31, 2020. In addition, NOLs arising in tax years 2018, 2019, and 2020 are subject to a five year carryback and indefinite carryforward, while NOLs arising in tax years beginning after December 31, 2020 also are subject to indefinite carryforward but cannot be carried back. In future years, if and when the valuation allowance related to our NOLs is partially or fully released, the changes in the carryforward/carryback periods as well as the new limitation on use of NOLs may significantly impact our valuation allowance assessments for NOLs generated after December 31, 2017.

***We are exposed to fluctuations in currency exchange rates, which could negatively affect our operating results.***

Our contracts are primarily denominated in U.S. dollars, and therefore substantially all of our revenue is not subject to foreign currency risk. However, a strengthening of the U.S. dollar could increase the real cost of our offerings to our customers outside of the United States, which could adversely affect our operating results. In addition, an increasing portion of our operating revenues and operating expenses are earned or incurred outside of the United States, and an increasing portion of our assets are held outside of the United States. These operating revenues, expenses, and assets are denominated in foreign currencies and are subject to fluctuations due to changes in foreign currency exchange rates. If we are not able to successfully hedge against the risks associated with currency fluctuations, our operating results could be adversely affected.

Additionally, global events as well as geopolitical developments, including regional conflicts in Europe and the Middle East, fluctuating commodity prices, trade tariff developments, and inflation have caused, and may in the future cause, global economic uncertainty and uncertainty about the interest rate environment, which could amplify the volatility of currency fluctuations. We have not engaged in the hedging of foreign currency transactions to date, so we may not be able to effectively offset the adverse financial impacts that may result from unfavorable movements in foreign currency exchange rates, which could adversely affect our operating results.

### E. STRATEGIC RISKS

***We may be unable to establish or maintain relationships with third parties for certain aspects of continued product developments, manufacturing, distribution, sale, servicing, and supply components for our products.***

We will need to maintain and may need to enter into additional strategic relationships in order to complete our current development and commercialization plans regarding our fuel cell products, electrolyzers, hydrogen production, and potential new business markets. We may also require partners to assist in the sale, servicing, and supply of components for our current and anticipated products and projects, which are in development. If we are unable to identify, negotiate, enter into, and maintain satisfactory agreements with partners, including those relating to the supply, distribution, service and support of our current and anticipated products and projects, we may not be able to complete our product development and commercialization plans on schedule or at all. We may also need to scale back these plans in the absence of needed partners, which could adversely affect our future prospects for development and commercialization of future products and projects. While we have entered into relationships with suppliers of some key components for our products, we do not know when or whether we will secure supply relationships for all required components and subsystems for our products, or whether such relationships will be on terms that will allow us to achieve our objectives. Our business prospects, results of operations, and financial condition could be harmed if we fail to secure and maintain relationships with entities that can develop or supply the required components for our products and provide the required distribution and servicing support. Additionally, the agreements governing our current relationships allow for termination by our partners under certain circumstances, some of which are beyond our control. If any agreements with our partners were to terminate, there could be a material adverse impact on the continued development and profitable commercialization of our products and the operation of our business, financial condition, results of operations, and prospects.

***We may be unable to make attractive acquisitions or successfully integrate acquired businesses, assets or properties, and any inability to do so may disrupt our business and hinder our ability to grow, divert the attention of key personnel, disrupt our business, and impair our financial results.***

From time to time, we may consider opportunities to acquire or make investments in new or complementary businesses, facilities, technologies, or products, or enter into strategic initiatives, which may enhance our capabilities, expand our manufacturing network, complement our current offerings, or expand the breadth of our markets. For example, in 2021, we acquired Applied Cryo Technologies, Inc., which added significant capabilities, expertise, and technologies, including a liquid hydrogen delivery network and fleet, liquid hydrogen storage, and hydrogen mobility fueling, and Frames Holding B.V. (“Frames”), which added engineering, process, and systems integration expertise, enabling us to scale the delivery of green hydrogen solutions. In addition, in 2022, we acquired Joule Processing LLC (“Joule”), whose cryogenic process technology we adopted to efficiently liquefy hydrogen by leveraging advanced cooling processes at low temperatures.

Entering into acquisitions and investments and other strategic initiatives involve numerous risks, any of which could harm our business, including, among other things:

- expenses, delays, or difficulties in integrating the acquired businesses, facilities, technologies, products, operations, and existing contracts of a target company, including the failure to realize the anticipated benefits of the combined businesses;
- expending significant cash or incurring substantial debt to finance acquisitions, which indebtedness may restrict our business or require the use of available cash to make interest and principal payments;
- mistaken assumptions about volumes or the timing of those volumes, revenues or costs, including synergies;
- negative perception of the acquisition by customers, financial markets or investors;
- difficulty in supporting and transitioning customers, if any, of the target company;
- inability to achieve anticipated synergies or increase the revenue and profit of the acquired business;
- the assumption of unknown liabilities;
- exposure to potential lawsuits;
- limitations on rights to indemnity from the seller;
- the diversion of management’s and employees’ attention from other business concerns;
- unforeseen difficulties operating in new geographic areas;
- customer or key employee losses at the acquired businesses;
- the price we pay or other resources that we devote may exceed the value we realize; or
- the value we could have realized if we had allocated the purchase price or other resources to another opportunity and inability to generate sufficient revenue to offset acquisition costs.

Our failure to successfully complete or integrate such acquisitions could have a material adverse effect on our financial condition and results of operations. Our ability to successfully grow through strategic transactions depends upon our ability to identify, negotiate, complete, and integrate suitable target businesses, facilities, technologies, and products and to obtain any necessary financing. These efforts could be expensive and time-consuming and may disrupt our ongoing business and prevent management from focusing on our operations. We do not know if we will be able to identify acquisitions or strategic relationships we deem suitable, whether we will be able to successfully complete any such transactions on favorable terms or at all, or whether we will be able to successfully integrate any acquired business, facilities, technologies, or products into our business or retain any key personnel or suppliers. In addition, if we finance acquisitions by issuing equity securities, our existing stockholders may be diluted. As a result, if our forecasted assumptions for these acquisitions and investments are not accurate, we may not achieve the anticipated benefits of any such acquisitions, and we may incur costs in excess of what we had anticipated.

### F. RISKS RELATED TO THE OWNERSHIP OF OUR COMMON STOCK

***Our stock price and stock trading volume have been and could remain volatile, and the value of your investment could decline and if securities analysts do not maintain coverage of us or if they publish unfavorable or inaccurate research or reports about our business, our stock, or our industry, the price of our stock and the trading volume could decline.***

The market price of our common stock has historically experienced and may continue to experience significant volatility. During 2023 and 2024, the sales price of our common stock fluctuated from a high of $18.88 per share to a low of $1.60 per share. Our progress in developing and commercializing our products, our quarterly operating results, announcements of new products by us or our competitors, our perceived prospects, changes in securities analysts’ recommendations or earnings estimates, changes in general conditions in the economy or the financial markets, adverse events related to our strategic relationships, significant sales of our common stock by existing stockholders, including one or more of our strategic partners, events relating to our determination to restate certain of our previously issued consolidated financial statements, and other developments affecting us or our competitors could cause the market price of our common stock to fluctuate substantially. In addition, in recent years, the stock market has experienced significant price and volume fluctuations. This volatility has affected the market prices of securities issued by many companies for reasons unrelated to their operating performance and may adversely affect the price of our common stock. Such market price volatility could adversely affect our ability to raise additional capital. Furthermore, technical factors in the public trading market for our common stock may produce price movements that may or may not comport with macro, industry or company-specific fundamentals, including, without limitation, the sentiment of retail investors (including as may be expressed on financial trading and other social media sites), the amount and status of short interest in our securities, access to margin debt, trading in options and other derivatives on our common stock and any related hedging or other technical trading factors. For example, we are subject to securities class action litigation filed after a drop in the price in our common stock in March 2021 and March 2023, which could result in substantial costs and diversion of management’s attention and resources and could harm our stock price, business, prospects, results of operations and financial condition.

We expect that the trading market for our common stock will be affected by research or reports that industry or financial analysts publish about us or our business. There are many large, well-established companies active in our industry and portions of the markets in which we compete, which may mean that we receive less widespread analyst coverage than our competitors. If one or more of the analysts who covers us downgrades their evaluations or lowers their expectations of our Company, our stock, or our industry, the price of our stock could decline. If one or more of these analysts cease coverage of our Company, our stock may lose visibility in the market, which in turn could cause our stock price to decline.

***Sales of substantial amounts of our common stock in the public markets, or the perception that such sales might occur, could reduce the price that our common stock might otherwise attain and may dilute your voting power and your ownership interest in us.***

Sales of a substantial number of shares of our common stock in the public market, or the perception that such sales could occur, could adversely affect the market price of our common stock and may make it more difficult for you to sell your common stock at a time and price that you deem appropriate. As of December 31, 2024, there were approximately (i) 33,049,906 shares of common stock issuable upon conversion of the 7.00% Convertible Senior Notes at a conversion price of $4.25 per share, (ii) 11,611,699 shares of common stock issuable upon conversion of the 3.75% Convertible Senior Notes at a conversion price of $5.03 per share and (iii) 61,206,897 shares of common stock issuable upon conversion of the 6.00% Convertible Debenture at a conversion price of $2.90 per share. In addition, as of December 31, 2024, we had outstanding options exercisable for an aggregate of 38,690,148 shares of common stock at a weighted average exercise price of $8.64 per share and 82,022,634 shares of common stock issuable upon the exercise of warrants, of which 98,296,804 were vested as of December 31, 2024.

Moreover, subject to market conditions and other factors, we may issue shares of common stock, or other equity or debt securities convertible into common stock, in connection with a financing, acquisition, employee arrangement or otherwise. Any such issuance, including pursuant to any at-the-market agreements, such as the at-the-market offering program that we entered into with B. Riley Securities, Inc., or any line of equity, such as the standby equity purchase agreement that we entered with YA II PN, LTD, could result in substantial dilution to our existing stockholders.

Sales of substantial amounts of our common stock in the public market, or the perception that these sales could occur, could reduce the market price of our common stock to decline. In addition, the conversion of the notes or preferred stock or the exercise of outstanding options and warrants and future equity issuances will result in dilution to investors. The market price of our common stock could fall as a result of resales of any of these shares of common stock due to an increased number of shares available for sale in the market.

***Provisions in our governing documents and Delaware law may discourage or delay an acquisition of the Company by a third party that stockholders may consider favorable and may limit a stockholder’s ability to bring a claim in a forum a stockholder finds favorable.***

Our amended and restated certificate of incorporation, our amended and restated bylaws, and Delaware corporate law contain provisions that could have an anti-takeover effect and make it harder for a third party to acquire us without the consent of our Board. These provisions may also discourage proxy contests and make it more difficult for our stockholders to take some corporate actions, including the election of directors. These provisions include, but are not limited to: the ability of our Board to issue shares of preferred stock in one or more series and to determine the terms of those shares, including preference and voting rights, without a stockholder vote; the exclusive right of our Board to elect a director to fill a vacancy created by the expansion of our Board or the resignation, death or removal of a director, which prevents stockholders from being able to fill vacancies on our Board; the inability of stockholders to call a special meeting of stockholders; the prohibition on stockholder action by written consent, which forces stockholder action to be taken at an annual or special meeting of our stockholders; advance notice informational and procedural requirements for nominations for election to our Board or for proposing business to be brought before a stockholder meeting, which may discourage or deter a potential acquirer from conducting a solicitation of proxies to elect the acquirer’s own slate of directors or otherwise attempting to obtain control of us; a prohibition against stockholders nominating a number of their own nominees at the annual meeting of the stockholders that exceeds the number of directors to be elected at such annual meeting; the ability of our Board, by majority vote and without shareholder approval, to amend the bylaws, which may allow our Board to take additional actions to prevent an unsolicited takeover and inhibit the ability of an acquirer to amend the bylaws to facilitate an unsolicited takeover attempt; and staggered terms for our directors, which effectively prevents stockholders from electing a majority of the directors at any one annual meeting of stockholders.

In addition, as a Delaware corporation, we are subject to Section 203 of the Delaware General Corporation Law. These provisions may prohibit large stockholders, in particular those owning 15% or more of our outstanding voting stock, from merging or combining with us for a certain period of time.

Our amended and restated bylaws provide that unless the Company consents in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware will be the sole and exclusive forum for any state law claims for: (i) any derivative action or proceeding brought on behalf of the Company, (ii) any action asserting a claim of, or a claim based on, a breach of a fiduciary duty owed by any director, officer or other employee of the Company to the Company or the Company’s stockholders, (iii) any action asserting a claim arising pursuant to any provision of the Delaware General Corporation Law or the Company’s amended and restated certificate of incorporation or amended and restated bylaws, or (iv) any other action asserting a claim governed by the internal affairs doctrine. The amended and restated bylaws further provide that unless the Company consents in writing to the selection of an alternative forum, the federal district courts of the United States of America will be the sole and exclusive forum for the resolution of any complaint asserting a cause of action arising under the Securities Act and any person or entity purchasing or otherwise acquiring or holding any interest in shares of capital stock of the Company will be deemed to have notice of and consented to these provisions.

We believe these provisions may benefit us by providing increased consistency in the application of Delaware law and federal securities laws by chancellors and judges, as applicable, particularly experienced in resolving corporate disputes, efficient administration of cases on a more expedited schedule relative to other forums and protection against the burdens of multi-forum litigation. If a court were to find the choice of forum provision that is contained in our amended and restated bylaws to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could materially adversely affect our business, results of operations, and financial condition. For example, Section 22 of the Securities Act provides that state and federal courts have concurrent jurisdiction over claims to enforce any duty or liability created by the Securities Act or the rules and regulations promulgated thereunder. Accordingly, there is uncertainty as to whether a court would enforce such a forum selection provision as written in connection with claims arising under the Securities Act.

Because the choice of forum provisions in our amended and restated bylaws may have the effect of severing certain causes of action between federal and state courts, stockholders seeking to assert claims against us or any of our current or former director, officer, other employee, agent, or stockholder, may be discouraged from bringing such claims due to a possibility of increased litigation expenses arising from litigating multiple related claims in two separate courts. The choice of forum provisions may therefore limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or any of our current or former director, officer, other employee, agent, or stockholder. Alternatively, if a court were to find the choice of forum provisions contained in our amended and restated bylaws to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could harm our business, results of operations, and financial condition.

### We do not anticipate paying any dividends on our common stock.

We do not anticipate paying any cash dividends on our common stock in the foreseeable future. If we do not pay cash dividends, you would receive a return on your investment in our common stock only if the market price of our common stock is greater at the time you sell your shares than the market price at the time you bought your shares.

## Cybersecurity

As filed, 4,665 characters.

### Cybersecurity Risk Management

We face a number of cybersecurity risks in connection with our business and recognize the growing threat within the general marketplace and our industry. In the ordinary course of our business, we use, store, and process data, including data of our employees, partners, collaborators, and vendors. Cybersecurity threats and incidents include attempts to gain unauthorized access to our systems and networks, or our partners, collaborators, vendors, or other third parties with whom we do business, to disrupt operations, corrupt data or steal confidential or personal information and other cybersecurity breaches. We consider cybersecurity risk a serious threat to our business. To help the Company identify, assess, and mitigate risks to this data and our systems, we have implemented a cybersecurity risk management program that is informed by recognized industry standards and frameworks and incorporates elements of the same.

Our cybersecurity risk management program includes a number of components, including information security program assessments and continuous monitoring of critical risks from cybersecurity threats using automated tools. We periodically engage third parties to conduct risk assessments on our systems, including penetration testing and other vulnerability analyses. In 2024, Plug continued to fortify its comprehensive cybersecurity and risk controls. We maintain an insider threat program designed to identify, assess, and address potential risks from within our Company and evaluate potential risks consistent with industry practices, customer requirements, and applicable law, including privacy and other considerations. We mandated an annual cybersecurity awareness training module, enhanced our Information Technology Infrastructure Library (ITIL) based discipline of change and incident management, and overhauled our monthly patching/vulnerability management rigor. Additionally, Plug continued leveraging top-tier third party support for external and perimeter examination: completing exhaustive Penetration Testing and Vulnerability Scans (performed by OrbitalFire), establishing a robust Network Operations Center (NOC), and leveraging industry-leading endpoint monitoring and detection services (CrowdStrike). Additionally, we have implemented an employee education program whereby employees are able to attend cybersecurity awareness training during the onboarding process.

### Governance

The Vice President of Information Technology (“VP of IT”) oversees the daily operations of our cybersecurity risk management program and plays a central role in assessing and managing critical risks from cybersecurity threats with the support of additional IT professionals. The VP of IT role is currently held by an individual who has approximately twenty years of experience in information security management, application portfolio management, and IT governance, risk, and compliance. The VP of IT periodically reports on the cybersecurity program to the Chief Financial Officer (“CFO”).

Our governance framework includes oversight by the Audit Committee of the Board of Directors. The Audit Committee meets quarterly with the CFO regarding the cybersecurity risk management program, including as relates to critical cybersecurity risks and cybersecurity initiatives and strategies. Additionally, on an annual basis, the VP of IT reports the current state of cybersecurity risk management to the full Board of Directors. The Board of Directors, as a whole and through its committees, has responsibility for the oversight of risk management.

Although we have designed our cybersecurity program and governance procedures above to mitigate cybersecurity risks, we have experienced, and we may in the future experience, threats to and breaches of our data and systems, including ransomware attacks and phishing attacks. To date, these risks, threats or attacks have not had a material impact on our operations, business strategy or financial results, but we cannot provide assurance that they will not have a material impact in the future. For more information about the cybersecurity risks we face, see the risk factor entitled “We are dependent on information technology in our operations, and the failure of such technology may adversely affect our business. Security breaches of our information technology systems, including cyber-attacks, ransomware attacks, or use of malware or phishing or other malicious techniques by threat actors, have in the past and could in the future lead to liability, impact our operations, or damage our reputation and financial results” in Item 1A, “Risk Factors”.

## Properties

As filed, 3,701 characters.

The following table sets forth information regarding our principal operating properties and other significant properties as of December 31, 2024, which we use of our single operating segment. In general, our operating properties are well maintained, suitably equipped, and in good operating condition:

|  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |
| **Continent** | **​** | **Location** | **​** | **Facility** | **​** | **Size** | **​** | **Ownership Status** |
| North America | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | New York | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Latham | ​ | Manufacturing, research and development, and warehousing | ​ | 141,405 sq ft | ​ | Lease |
| ​ | ​ | Rochester | ​ | Manufacturing, research and development, office, and warehousing | ​ | 240,311 sq ft | ​ | Lease |
| ​ | ​ | Latham - 8BA | ​ | Corporate offices | ​ | 36,989 sq ft | ​ | Lease |
| ​ | ​ | Latham - 6BA | ​ | Office | ​ | 19,100 sq ft | ​ | Lease |
| ​ | ​ | Slingerlands | ​ | Manufacturing, warehousing, and office | ​ | 350,000 sq ft | ​ | Lease |
| ​ | ​ | Washington | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Spokane | ​ | Manufacturing | ​ | 29,200 sq ft | ​ | Lease |
| ​ | ​ | Massachusetts | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Concord | ​ | Manufacturing | ​ | 33,000 sq ft | ​ | Lease |
| ​ | ​ | Ohio | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Dayton | ​ | Service center | ​ | 43,200 sq ft | ​ | Lease |
| ​ | ​ | Pennsylvania | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Canonsburg | ​ | Office | ​ | 4,775 sq ft | ​ | Lease |
| ​ | ​ | Texas | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Houston | ​ | Manufacturing and office | ​ | 174,412 sq ft | ​ | Lease |
| ​ | ​ | Magnolia | ​ | Manufacturing and office | ​ | 69,550 sq ft | ​ | Lease |
| ​ | ​ | Indiana | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | LaFayette | ​ | Manufacturing and office | ​ | 123,000 sq ft | ​ | Own |
| ​ | ​ | Canada | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Montreal | ​ | Office | ​ | 5,657 sq ft | ​ | Lease |
| ​ | ​ | Georgia | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Kingsland | ​ | Land and hydrogen production plant | ​ | 882,556 sq ft | ​ | Own |
| ​ | ​ | Tennessee | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Charleston | ​ | Hydrogen production plant | ​ | 217,800 sq ft | ​ | Own |
| Europe | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Netherlands | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Alphen aan den Rijn | ​ | Office | ​ | 100,299 sq ft | ​ | Lease |
| ​ | ​ | Hengelo | ​ | Office | ​ | 3,100 sq ft | ​ | ​ |
| ​ | ​ | Germany | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Duisburg | ​ | Office | ​ | 58,043 sq ft | ​ | Lease |
| ​ | ​ | France | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Paris | ​ | Office | ​ | 2,260 sq ft | ​ | Lease |
| ​ | ​ | United Kingdom | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Nuneaton | ​ | Hydrogen production plant | ​ | 3,600 sq ft | ​ | Lease |
| Asia | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | India | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Shivajinagar | ​ | Office | ​ | 17,750 sq ft | ​ | Lease |
| ​ | ​ | Malaysia | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Kuala Lumpur | ​ | Office | ​ | 1,195 sq ft | ​ | Lease |
| Middle East | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | United Arab Emirates | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Dubai | ​ | Office | ​ | 2,155 sq ft | ​ | Lease |
| South America | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Brazil | ​ | ​ | ​ | ​ | ​ | ​ |
| ​ | ​ | Rio de Janeiro | ​ | Office | ​ | 1,196 sq ft | ​ | Lease |

See Note 14, “Operating and Finance Lease Liabilities”, to the consolidated financial statements for further discussion of the leases. We believe that our facilities are sufficient to accommodate our anticipated production volumes.

## Legal proceedings

As filed, 320 characters.

As disclosed in Note 23, “Commitments and Contingencies”, of the notes to the consolidated financial statements, we are engaged in certain legal proceedings, and the disclosure set forth in Note 23, “Commitments and Contingencies”, relating to legal and other contingencies is incorporated by reference into this Item 3.

## Management's discussion and analysis

As filed, 141,821 characters.

The discussion contained in this Form 10-K contains “forward-looking statements” within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act, that involve risks and uncertainties. Our actual results could differ materially from those discussed in this Annual Report on Form 10-K. In evaluating these statements, you should review Part I, Forward-Looking Statements, Part I, Item 1A, “Risk Factors” and our consolidated financial statements and notes thereto included in Part II, Item 8, “Financial Statements and Supplementary Data”, of this Annual Report on Form 10-K.

Information pertaining to fiscal year 2022 was included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022 on page 42 under Part II, Item 7, “Management’s Discussion and Analysis of Financial Position and Results of Operations”, which was filed with the SEC on March 1, 2023.

### Overview

Plug is facilitating the paradigm shift to an increasingly electrified world by innovating cutting-edge hydrogen and fuel cell solutions.

While we continue to develop commercially viable hydrogen and fuel cell product solutions, we have expanded our offerings to support a variety of commercial operations that can be powered with clean hydrogen. We provide electrolyzers that allow customers — such as refineries, producers of chemicals, steel, fertilizer and commercial refueling stations — to generate hydrogen on-site. We are focusing our efforts on (a) industrial mobility applications, including electric forklifts and electric industrial vehicles, at multi-shift high volume manufacturing and high throughput distribution sites where we believe our products and services provide a unique combination of productivity, flexibility, and environmental benefits; (b) production of hydrogen; and (c) stationary power systems that will support critical operations, such as data centers, microgrids, and generation facilities, in either a backup power or continuous power role, and replace batteries, diesel generators or the grid for telecommunication logistics, transportation, and utility customers. Plug expects to support these products and customers with an ecosystem of vertically integrated products that produce, transport, store and handle, dispense, and use hydrogen for mobility and power applications.

Our current product and service portfolio includes:

**GenDrive**: GenDrive is our hydrogen fueled PEM fuel cell system, providing power to material handling EVs, including Class 1, 2, 3 and 6 electric forklifts, automated guided vehicles, and ground support equipment.

**GenSure**: GenSure is our stationary fuel cell solution providing scalable, modular PEM fuel cell power to support the backup and grid-support power requirements of the telecommunications, transportation, and utility sectors; our GenSure High Power Fuel Cell Platform supports large scale stationary power and data center markets.

**Progen**: Progen is our fuel cell stack and engine technology currently used globally in mobility and stationary fuel cell systems. This includes Plug’s membrane electrode assembly (“MEA”), a critical component of the fuel cell stack used in zero-emission fuel cell systems.

**GenFuel**: GenFuel is our liquid hydrogen fueling, delivery, generation, storage, and dispensing system.

**GenCare**: GenCare is our ongoing “Internet of Things”-based maintenance and on-site service program for GenDrive fuel cell systems, GenSure fuel cell systems, GenFuel hydrogen storage and dispensing products and Progen fuel cell engines.

**GenKey**: GenKey is our vertically integrated “turn-key” solution combining either GenDrive or GenSure fuel cell power with GenFuel fuel and GenCare aftermarket service, offering complete simplicity to customers transitioning to fuel cell power.

**Electrolyzers**: The design and implementation of 5MW and 10MW electrolyzer systems that are modular, scalable hydrogen generators optimized for clean hydrogen production. Electrolyzers generate hydrogen from water using electricity and a special membrane and “green” hydrogen is generated by using renewable energy inputs, such as solar or wind power.

**Liquefaction Systems**: Plug’s 15 ton-per-day and 30 ton-per-day liquefiers are engineered for high efficiency, reliability, and operational flexibility — providing consistent liquid hydrogen to customers. This design increases plant reliability and availability while minimizing parasitic losses like heat leak and seal gas losses.

**Cryogenic Equipment:** Engineered equipment including trailers and mobile storage equipment for the distribution of liquified hydrogen, oxygen, argon, nitrogen and other cryogenic gases.

**Liquid Hydrogen:** Liquid hydrogen provides an efficient fuel alternative to fossil-based energy. We produce liquid hydrogen through our electrolyzer systems and liquefaction systems. Liquid hydrogen supply will be used by customers in material handling operations, fuel cell electric vehicle fleets, and stationary power applications.

We provide our products and solutions worldwide through our direct sales force, and by leveraging relationships with original equipment manufacturers (“OEMs”) and their dealer networks. Plug is currently targeting Asia, Australia, Europe, Middle East and North America for expansion in adoption. The European Union (the “EU”) has rolled out ambitious targets for the hydrogen economy, with the United Kingdom also taking steps in this direction, and Plug is seeking to execute on our strategy to become one of the European leaders in the hydrogen economy. This includes a targeted account strategy for material handling, securing strategic partnerships with European OEMs, energy companies, utility leaders and accelerating our electrolyzer business.

### Liquidity and Capital Resources

A summary of our consolidated sources and uses of cash, cash equivalents and restricted cash was as follows (in thousands):

| ​ ​ ​ Net cash (used in) provided by: | ​ ​ ​ | ​ ​ Year ended December 31, 2024 ​ ​ | ​ ​ | ​ ​ December 31, 2023 ​ ​ | ​ ​ | ​ ​ December 31, 2022 ​ ​ |
| --- | --- | ---: | --- | ---: | --- | ---: |
| Operating activities | ​ | $(728,643) | ​ | $(1,106,570) | ​ | $(828,623) |
| Investing activities | ​ | ​ (402,364) | ​ | ​ 728,052 | ​ | ​ (679,370) |
| Financing activities | ​ | ​ 983,170 | ​ | ​ 6,117 | ​ | ​ (77,457) |
| ​ | ​ | $(147,837) | ​ | $(372,401) | ​ | $(1,585,450) |

### Operating Activities

The net cash used in operating activities for the year ended December 31, 2024 and 2023 was $728.6 million and $1.1 billion, respectively. This decrease in net cash used in operating activities was primarily due to cash inflows related to the Company’s accounts receivables and inventory, partially offset by an increase in net loss, a decrease in accounts payable, accrued expenses, and other liabilities and a decrease in deferred revenue and other contract liabilities.

### Investing Activities

The net cash (used in)/provided by investing activities for the year ended December 31, 2024 and 2023 was ($402.4) million and $728.1 million, respectively. The change from cash inflow to cash outflow from investing activities was primarily due to a decrease in proceeds from sales and maturities of available-for-sale securities during the year ended December 31, 2024 as the Company no longer holds available-for-sale securities.

### Financing Activities

The net cash provided by financing activities for the year ended December 31, 2024 and 2023 was $983.2 million and $6.1 million, respectively. The increase in cash provided by financing activities was primarily driven by proceeds from the At Market Issuance Sales Agreement, as amended (as described below), with B. Riley Securities, Inc. (“B. Riley”)

and proceeds from the convertible debenture during the year ended December 31, 2024, partially offset by a decrease in proceeds from finance obligations.

The Company has continued to experience negative cash flows from operations and net losses. The Company incurred net losses of approximately $2.1 billion, $1.4 billion and $724.0 million for the years ended December 31, 2024, 2023 and 2022, respectively, and had an accumulated deficit of $6.6 billion as of December 31, 2024. The Company’s working capital was $729.0 million at December 31, 2024, which included unrestricted cash and cash equivalents of $205.7 million and current restricted cash of $198.0 million.

The future use of our available liquidity will be based upon the ongoing review of the funding needs of our businesses, the optimal allocation of our resources, and the timing of cash flow generation. To the extent that we desire to access alternative sources of capital, market conditions could adversely impact our ability to do so at that time and at terms favorable to the Company.

The Company has an “at-the-market” equity offering program with B. Riley pursuant to which the Company may, from time to time, offer and sell through or to B. Riley, as sales agent or principal, shares of the Company’s common stock, having an aggregate gross sales price of up to $1.0 billion under a sales agreement. The Company has the right at its sole discretion to direct B. Riley to act on a principal basis and purchase directly from the Company up to $11.0 million of shares of its common stock on any trading day if the Company’s market capitalization is more than $1.0 billion (or up to $10.0 million if the Company’s market capitalization is less than $1.0 billion) and up to $55.0 million of shares in any calendar week if the Company’s market capitalization is more than $1.0 billion (or up to $30.0 million if the Company’s market capitalization is less than $1.0 billion). On February 23, 2024 and November 7, 2024, the Company and B. Riley amended the at-the-market equity program to increase the aggregate offering price of shares of common stock available for issuance under the program to $1.0 billion. The amended program will terminate upon the earliest of (a) December 31, 2025 with respect to principal transactions and January 17, 2026 with respect to agency transactions, (b) the sale of all shares of common stock under the program or (c) termination of the sales agreement. During the year ended December 31, 2024, the Company issued 219,835,221 shares of its common stock at a weighted-average sales price of $3.08 per share for net proceeds of $666.9 million under the ATM agreement.

On July 22, 2024, the Company sold 78,740,157 shares of its common stock at a public offering price of $2.54 per share for net proceeds of $191.0 million after deducting the underwriting discount and related offering expenses.

On November 11, 2024, the Company entered into a Debenture Purchase Agreement (the “Debenture Purchase Agreement”) with YA II PN, Ltd., an investment fund managed by Yorkville Advisors Global, LP (“Yorkville”), pursuant to which the Company issued to Yorkville an unsecured convertible debenture in aggregate principal amount of $200.0 million in exchange for the payment of $190.0 million. For more information, see Note 17, “Convertible Senior Notes”.

In addition, on February 10, 2025, the Company entered into a Standby Equity Purchase Agreement with Yorkville (the “SEPA”), pursuant to which the Company has the right, at its option, to sell to Yorkville up to $1.0 billion in the aggregate gross sales of its common stock, subject to certain limitations and conditions set forth therein. The Company has the right, but not the obligation, from time to time at its sole discretion to direct Yorkville to purchase directly from the Company up to $10.0 million shares of its common stock on any trading day.

On March 3, 2025, the Company announced the 2025 Restructuring Plan. The 2025 Restructuring Plan includes initiatives to reduce our workforce, realign the Company’s manufacturing footprint and streamline the organization to enhance operational efficiency and improve overall liquidity. The expected annual savings from the 2025 Restructuring Plan are expected to be significant and will begin to be realized beginning in the second half of 2025.

The Company believes that its working capital, cash position and restricted cash to be released over the next 12 months, together with its right to direct B. Riley to purchase shares from the Company under the “at-the-market” equity offering program and its right to direct Yorkville to purchase shares from the Company under the SEPA, will be sufficient to fund its on-going operations for a period of at least 12 months subsequent to the issuance of the accompanying consolidated financial statements.

The Company’s significant obligations consisted of the following as of December 31, 2024:

- Operating and finance leases totaling $313.4 million and $35.6 million, respectively, of which $71.3 million and $12.8 million, respectively, are due within the next 12 months. These leases are primarily related to sale/leaseback agreements entered into with various financial institutions to facilitate the Company’s commercial transactions with key customers.
- Finance obligations totaling $347.4 million, of which approximately $83.1 million is due within the next 12 months. Finance obligations consist primarily of debt associated with the sale of future revenues and failed sale/leaseback transactions.
- Convertible senior notes totaling $379.3 million, of which $58.3 million is due within the next twelve months. See Note 17, “Convertible Senior Notes”, for more details.
- Capital commitments totaling $4.6 million related to the Company’s equity method investments, of which all $4.6 million is due within the next 12 months. See Note 4, “Investments”, for more details.
- Future payments under non-cancelable unconditional purchase obligations with a remaining term in excess of one year totaling $156.5 million, of which $40.9 million is due within the next 12 months. See Note 23, “Commitments and Contingencies”, for more details.
- Contingent consideration with an estimated fair value of approximately $60.7 million, of which $29.0 million is due within the next 12 months. See Note 5, “Fair Value Measurements”, for more details.

### SEC Settlement

On August 30, 2023, the Company reached a settlement of a civil administrative proceeding with the SEC related to the Company’s restatement of its previously issued financial statements as of and for the years ended December 31, 2019 and 2018, and as of and for each of the quarterly periods ended March 31, 2020 and 2019, June 30, 2020 and 2019, and September 30, 2020 and 2019. The Company, without admitting or denying the findings, agreed to a cease-and-desist order regarding Sections 13(a), 13(b)(2)(A), and 13(b)(2)(B) of the Exchange Act and Rules 13a-1, 13a-13, and 13a-15(a) - (c) thereunder. As part of the settlement, the Company paid a civil monetary penalty to the SEC in the amount of $1.25 million on September 20, 2023. On August 30, 2024, the Company certified with the SEC staff that the Company completed the undertakings set forth in the SEC settlement, which included fully remediating its material weaknesses. After reviewing the evidence of compliance provided by the Company, the SEC found that the evidence provided satisfied the undertaking requirement.

### Restructuring Plans

In February 2024, in a strategic move to enhance the Company’s financial performance and ensure long-term value creation in a competitive market, the Company approved the 2024 Restructuring Plan, a comprehensive initiative that encompassed a broad range of measures, including operational consolidation, strategic workforce adjustments, and various other cost-saving actions. In March 2025, the Company approved another initiative, the 2025 Restructuring Plan, which included initiatives to reduce the Company’s workforce, realign the Company’s manufacturing footprint and streamline the organization to enhance operational efficiency and improve overall liquidity. The expected annual savings from the 2025 Restructuring Plan are expected to be significant and will begin to be realized beginning in the second half of 2025.

### Department of Energy Loan Guarantee

On May 14, 2024, the U.S. Department of Energy (the “DOE”) issued a conditional commitment letter to the Company and a wholly owned indirect subsidiary of the Company for a loan guarantee of up to $1.66 billion through the DOE’s Loan Programs Office to finance the development, construction, and ownership of up to six green hydrogen production facilities. On January 16, 2025, the Company closed its loan guarantee from the DOE that is intended to support the Company’s domestic hydrogen production plant buildout. The approval and funding of any disbursements of the loan guarantee will be subject to the satisfaction of conditions precedent, including, but not limited to, evidence of satisfaction of certain technical and performance related conditions precedent, adequate project funding, reports from certain technical consultants and advisors, and the receipt of certain financial models demonstrating compliance with the financial covenants set forth in the loan guarantee agreement. There can be no assurance that the Company will be able to secure such a loan or on terms that are acceptable to the Company. See Item 1A, “Risk Factors”, for a description of risks related to the DOE loan guarantee.

### Inflation, Material Availability and Labor Shortages

Most components essential to our business are generally available from multiple sources; however, we believe there are some component suppliers and manufacturing vendors, particularly those suppliers and vendors that supply materials in very limited supply worldwide or supply commodities that have a high degree of volatility, whose loss to us or general unavailability could have a material adverse effect upon our business and financial condition. For example, although we believe the liquid hydrogen supply challenges of the past may have lessened in recent months, we may again experience similar challenges relating to the availability of hydrogen, including but not limited to suppliers utilizing force majeure provisions under existing contracts as they have in the past, which could negatively impact the amount of hydrogen we are able to provide under certain of our hydrogen supply agreements and other customer agreements. Furthermore, global commodity pricing has been volatile and has been influenced by political events and worldwide economic trends, which has impacted our sourcing strategies, resulting in adverse impacts on our business and financial condition. We have mitigated and are continuing to mitigate these risks by continuing to diversify our supply chain, including diversifying our global supply chain and implementing alternate system architectures that we expect will allow us to source from multiple fuel cell, electrolyzer stack and air supply component vendors. While we continue to invest in our supply chain to improve its resilience with a focus on automation, dual sourcing of critical components, insourcing and localized manufacturing when feasible, we are also working closely with these vendors and other key suppliers on coordinated product introduction plans, product and sales forecasting, strategic inventories, and internal and external manufacturing schedules and levels. However, ongoing changes to, and evolution of, our products designs such as simultaneous design/build efforts and new product serviceability trends, or incorrect forecasting or updates to previously forecasted volumes could present challenges to those strategies despite best efforts in leveraging supplier relationships and capabilities. With respect to production, although cost pressures from global energy prices and inflation have been less volatile than previous years, an increase in cost pressures or a rise in inflation could negatively affect our business again, which could have a pricing impact on our key raw materials. We have a regionally diverse supply chain, and in cases where we have single sourced suppliers (typically due to new technology and products or worldwide shortages due to global demand), we work to engineer alternatives in our product design or develop new supply sources while covering short- and medium-term risks with supply contracts, building up inventory, and development partnerships. However, if we are unable to reduce such inventory, that could tie up working capital.

We continue to take proactive steps through our supply chain team to limit the impact of supplier challenges generally and we continue to work closely with our suppliers and transportation vendors to ensure availability of products and implement other cost savings initiatives. In addition, we have continued discussions with suppliers with respect to the terms of our supply agreements, and the outcome of such discussions, including whether those discussions yield the desired modifications in the terms of such supply agreements, may impact the timing of when we receive shipments of certain supplies or result in other supply chain issues.

With respect to our service business, we have experienced inflationary increases in labor, parts and related overhead. This has contributed to the increase in our estimated projected costs to service fuel cell systems and related infrastructure, which resulted in an increase in the provision for loss contracts related to service. If these trends continue, we may have to record additional service loss provisions in the future. We anticipate bookings and revenue will be uneven in the near-term while we pursue sales opportunities.

Additionally, we, as well as our suppliers and vendors, have observed an increasingly competitive labor market. Tight labor markets have resulted in longer times to fill open positions for us and our suppliers and vendors. Increased employee turnover, reassessment of employee responsibilities given current business needs, changes in the availability of our workers as well as labor shortages have resulted in, and could continue to result in, increased costs which could negatively affect our component or raw material purchasing abilities, and in turn, our financial condition, results of operations, or cash flows.

### Results of Operations

Our primary sources of revenue are from sales of equipment, related infrastructure and other, services performed on fuel cell systems and related infrastructure, power purchase agreements, and fuel delivered to customers and related equipment. A certain portion of our sales result from acquisitions in legacy markets, which we are working to transition to renewable solutions. Revenue from sales of equipment, related infrastructure and other represents sales of our GenDrive units, GenSure stationary backup power units, cryogenic stationary and on road storage, hydrogen liquefaction systems, electrolyzers and hydrogen fueling infrastructure. Revenue from services performed on fuel cell systems and related infrastructure represents revenue earned on our service and maintenance contracts and sales of spare parts. Revenue from power purchase agreements primarily represent payments received from customers who make monthly payments to access the Company’s GenKey solution. Revenue associated with fuel delivered to customers and related equipment represents the sale of hydrogen to customers that has been purchased by the Company from a third party or generated at our hydrogen production plants.

#### Provision for Common Stock Warrants

On August 24, 2022, the Company issued to Amazon.com NV Investment Holdings LLC, a wholly owned subsidiary of Amazon (“Amazon”), a warrant (the “Amazon Warrant”) to acquire up to 16,000,000 shares of the Company’s common stock, subject to certain vesting events described below under “Common Stock Transactions – Amazon Transaction Agreement in 2022”.

In 2017, in separate transactions, the Company issued a warrant to each of Amazon and Walmart to purchase up to 55,286,696 shares of the Company’s common stock, subject to certain vesting events described below under “Common Stock Transactions – Amazon Transaction Agreement in 2017” and “Common Stock Transactions – Walmart Transaction Agreement”. The Company recorded a portion of the estimated fair value of the warrants as a reduction of revenue based upon the projected number of shares of common stock expected to vest under the warrants, the proportion of purchases by Amazon, Walmart and their affiliates within the period relative to the aggregate purchase levels required for vesting of the respective warrants, and the then-current fair value of the warrants.

The amount of provision for the Amazon and Walmart warrants recorded as a reduction of revenue during the years ended December 31, 2024 and 2023, respectively, is shown in the table below (in thousands):

| ​ ​ ​ | ​ ​ | ​ ​ Year ended December 31, 2024 | ​ | ​ ​ December 31, 2023 |
| --- | --- | ---: | --- | ---: |
| Sales of equipment, related infrastructure and other | ​ | $(4,812) | ​ | $(566) |
| Services performed on fuel cell systems and related infrastructure | ​ | (4,883) | ​ | (1,194) |
| Power purchase agreements | ​ | (7,465) | ​ | (3,817) |
| Fuel delivered to customers and related equipment | ​ | (21,824) | ​ | (5,632) |
| Total | ​ | $(38,984) | ​ | $(11,209) |

Net revenue, cost of revenue, gross profit/(loss) and gross margin/(loss) for the years ended December 31, 2024 and 2023 were as follows (in thousands):

| ​ ​ ​ For the year ended December 31, 2024: | ​ ​ ​ ​ Net Revenue ​ ​ | ​ ​ ​ ​ | ​ ​ Cost of Revenue ​ ​ | ​ ​ ​ | ​ ​ Gross Profit/(Loss) ​ ​ | ​ ​ ​ | ​ ​ Gross ​ Margin/(Loss) ​ ​ |
| --- | ---: | --- | ---: | --- | ---: | --- | ---: |
| Sales of equipment, related infrastructure and other | $390,335 | ​ | $696,087 | ​ | $(305,752) |  | (78.3)% |
| Services performed on fuel cell systems and related infrastructure | 52,169 | ​ | 57,766 | ​ | (5,597) |  | (10.7)% |
| Provision for loss contracts related to service | ​ — | ​ | ​ 48,539 | ​ | ​ (48,539) | ​ | N/A ​ |
| Power purchase agreements | 77,842 | ​ | 216,947 | ​ | (139,105) |  | (178.7)% |
| Fuel delivered to customers and related equipment | 97,882 | ​ | 228,827 | ​ | (130,945) |  | (133.8)% |
| Other | 10,586 | ​ | 5,535 | ​ | 5,051 |  | 47.7% |
| Total | $628,814 | ​ | $1,253,701 | ​ | $(624,887) |  | (99.4)% |
| **For the year ended December 31, 2023:** | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ |
| Sales of equipment, related infrastructure and other | $711,433 | ​ | $765,575 | ​ | $(54,142) |  | (7.6)% |
| Services performed on fuel cell systems and related infrastructure | 39,093 | ​ | 75,412 | ​ | (36,319) |  | (92.9)% |
| Provision for loss contracts related to service | ​ — | ​ | ​ 86,346 | ​ | ​ (86,346) | ​ | N/A ​ |
| Power purchase agreements | 63,731 | ​ | 218,936 | ​ | (155,205) |  | (243.5)% |
| Fuel delivered to customers and related equipment | 66,246 | ​ | 246,318 | ​ | (180,072) |  | (271.8)% |
| Other | 10,837 | ​ | 6,544 | ​ | 4,293 |  | 39.6% |
| Total | $891,340 | ​ | $1,399,131 | ​ | $(507,791) |  | (57.0)% |

### Net Revenue

*Revenue — sales of equipment, related infrastructure and other*. Revenue from sales of equipment, related infrastructure and other represents sales of our GenDrive units, GenSure stationary backup power units, cryogenic stationary and on road storage, hydrogen liquefaction systems, electrolyzers and hydrogen fueling infrastructure referred to at the site level as hydrogen installations. Revenue from sales of equipment, related infrastructure and other for the year ended December 31, 2024 decreased $321.1 million, or 45.1%, to $390.3 million from $711.4 million for the year ended December 31, 2023 primarily due to decreases in revenue related to hydrogen site installations, liquefiers, cryogenic equipment, and fuel cell systems. The decrease in the revenue related to sales of cryogenic storage equipment and liquefiers of $120.2 million was primarily due to product mix with respect to cryogenic equipment, fewer projects and a slower rate of progress on existing liquefier projects as they near completion compared to the year ended December 31, 2023. Revenue related to sales of fuel cell systems decreased $129.1 million, primarily due to a decrease in the volume of GenDrive units sold, with 3,119 units sold during the year ended December 31, 2024 compared to 6,392 units sold during the year ended December 31, 2023. The decrease in hydrogen infrastructure revenue of $114.5 million was primarily due to volume, with 15 hydrogen site installations for the year ended December 31, 2024 compared to 52 for the year ended December 31, 2023. Additionally, there was a decrease of $10.3 million related to the sales of engineered oil and gas equipment from the Frames acquisition, for which sales are not expected to continue beyond current commitments. Furthermore, the pace of development of the hydrogen economy has been slower than anticipated and has impacted hydrogen equipment deployments. Finally, there was an increase in the provision for common stock warrants recorded as a reduction of revenue, which increased to $4.8 million for the year ended December 31, 2024 compared to $0.6 million for the year ended December 31, 2023. Partially offsetting these decreases was an increase in revenue related to electrolyzers of $53.0 million, primarily due to 153 one megawatt equivalent units sold for the year ended December 31, 2024 compared to 133 one megawatt equivalent units sold for the year ended December 31, 2023. Included in the 153 one megawatt equivalent units sold for the year ended December 31, 2024 were 29 electrolyzer systems sold compared to two electrolyzer systems sold during the year ended December 31, 2023.

*Revenue — services performed on fuel cell systems and related infrastructure*. Revenue from services performed on fuel cell systems and related infrastructure represents revenue earned on our service and maintenance contracts and sales of spare parts. Revenue from services performed on fuel cell systems and related infrastructure for the year ended December 31, 2024 increased $13.1 million, or 33.5%, to $52.2 million from $39.1 million for the year ended December 31, 2023. The increase in revenue from services performed on fuel cell systems and related infrastructure was primarily due to the increase in pricing of our service agreements and incidental billings. In addition, the average number of GenDrive units under maintenance contracts increased to 21,897 during the year ended December 31, 2024 compared to 20,336 during the year ended December 31, 2023. Partially offsetting this increase in revenue was an increase in the provision for common stock warrants recorded as a reduction of revenue, which increased to $4.9 million for the year ended December 31, 2024 compared to $1.2 million for the year ended December 31, 2023.

*Revenue — Power purchase agreements.* Revenue from PPAs represents payments received from customers for power generated through the provision of equipment and service. Revenue from PPAs for the year ended December 31, 2024 increased $14.1 million, or 22.1%, to $77.8 million from $63.7 million for the year ended December 31, 2023. The increase in revenue was a result of an increase in the average number of units and customer sites party to these agreements. There was an average of 31,763 GenDrive units under PPAs generating revenue in 2024, compared to 30,626 in 2023. In addition, the average number of hydrogen sites under PPA arrangements was 147 in 2024, compared to 132 in 2023. Furthermore, pricing rates were favorable during the year ended December 31, 2024 compared to the year ended December 31, 2023. Partially offsetting this increase in revenue was an increase in the provision for common stock warrants recorded as a reduction of revenue, which increased to $7.5 million for the year ended December 31, 2024 compared to $3.8 million for the year ended December 31, 2023.

*Revenue — fuel delivered to customers and related equipment*. Revenue associated with fuel and related equipment delivered to customers represents the sale of hydrogen that has been purchased by the Company from a third party or generated at our hydrogen production plants. Revenue associated with fuel delivered to customers for the year ended December 31, 2024 increased $31.7 million, or 47.9%, to $97.9 million from $66.2 million for the year ended December 31, 2023. The increase in revenue was primarily due to an increase in the number of sites with fuel contracts, which increased by approximately 15 sites during the year ended December 31, 2024. Furthermore, increased fuel prices were negotiated with certain customers during the second quarter of 2024. Partially offsetting this increase in revenue was an increase in the provision for common stock warrants recorded as a reduction of revenue, which increased to $21.8 million for the year ended December 31, 2024 compared to $5.6 million for the year ended December 31, 2023.

### Cost of Revenue

*Cost of revenue — sales of equipment, related infrastructure and other*. Cost of revenue from sales of equipment, related infrastructure and other includes direct materials, labor costs, and allocated overhead costs related to the manufacture of our fuel cells such as GenDrive units and GenSure stationary back-up power units, cryogenic stationary and on road storage, and electrolyzers, as well as hydrogen fueling infrastructure referred to at the site level as hydrogen installations. Cost of revenue from sales of equipment, related infrastructure and other for the year ended December 31, 2024 decreased $69.5 million, or 9.1%, to $696.1 million compared to $765.6 million for the year ended December 31, 2023 primarily due to decreases in cost of revenue related to hydrogen site installations, liquefiers, cryogenic equipment, and fuel cell systems.

The decrease in cost of revenue related to sales of hydrogen infrastructure of $82.3 million was primarily due to volume, with 15 hydrogen site installations during the year ended December 31, 2024 compared to 52 during the year ended December 31, 2023. Included in cost of revenue related to sales of hydrogen infrastructure were inventory valuation adjustments of $4.2 million for the year ended December 31, 2024 compared to $5.3 million for the year ended December 31, 2023.

The decrease in cost of revenue related to cryogenic storage equipment and liquefiers of $83.1 million was primarily due to product mix with respect to cryogenic equipment and fewer projects and a slower rate of progress on existing liquefier projects as they near completion compared to the year ended December 31, 2023. Included in cost of revenue related to sales of cryogenic storage equipment and liquefiers were inventory valuation adjustments of $4.2 million for the year ended December 31, 2024 compared to $1.6 million for the year ended December 31, 2023.

The cost of revenue related to sales of fuel cell systems decreased by $15.5 million primarily due to a decrease in the volume of GenDrive units sold, with 3,119 units sold during the year ended December 31, 2024 compared to 6,392 units sold during the year ended December 31, 2023. Included in cost of revenue related to sales of fuel cell systems were inventory valuation adjustments of $79.5 million for the year ended December 31, 2024 compared to $24.0 million for the year ended December 31, 2023. The increases in inventory valuation adjustments were primarily related to lower sales volume at lower sales prices than previously experienced which resulted in higher lower of cost or realizable valuation adjustments.

Finally, there was a decrease in cost of revenue of $8.9 million related to a decrease in sales of engineered equipment from the Frames acquisition, for which sales are not expected to continue beyond current commitments.

Partially offsetting these decreases was an increase in cost of revenue related to sales of electrolyzer stacks and systems of $120.3 million primarily due to volume, with 153 one megawatt equivalent units sold for the year ended December 31, 2024 compared to 133 one megawatt equivalent units sold for the year ended December 31, 2023. Included in the 153 one megawatt equivalent units sold for the year ended December 31, 2024 were 29 electrolyzer systems sold compared to two electrolyzer systems sold during the year ended December 31, 2023. Included in cost of revenue related to sales of electrolyzer stacks and systems were inventory valuation adjustments of $80.4 million for the year ended December 31, 2024 compared to $55.6 million for the year ended December 31, 2023. The increases in inventory valuation adjustments were primarily related to additional costs incurred during the year ended December 31, 2024 as projects neared completion requiring additional lower of cost or net realizable valuation adjustments.

The gross loss generated from sales of equipment, related infrastructure and other increased to (78.3%) for the year ended December 31, 2024, compared to (7.6%) for the year ended December 31, 2023. The increase in gross loss was primarily due to inventory valuation adjustments described above, customer mix, lower margins on new product offerings and decline in volume which impacted leveraging of labor and overhead during 2024.

*Cost of revenue — services performed on fuel cell systems and related infrastructure*. Cost of revenue from services performed on fuel cell systems and related infrastructure includes the labor, material costs and allocated overhead costs incurred for our product service and hydrogen site maintenance contracts and spare parts. Cost of revenue from services performed on fuel cell systems and related infrastructure for the year ended December 31, 2024 decreased $17.6 million, or 23.3%, to $57.8 million compared to $75.4 million for the year ended December 31, 2023. The decrease in cost of revenue was primarily due to an increase in the release of the loss accrual, with a release of $51.6 million during the year ended December 31, 2024 compared to a release of $29.7 million during the year ended December 31, 2023. Included in cost of revenue related to services performed on fuel cell systems and related infrastructure were inventory valuation adjustments of $0.2 million for the year ended December 31, 2024 compared to $0.7 million for the year ended December 31, 2023. Gross loss decreased to (10.7%) for the year ended December 31, 2024 compared to (92.9)% for the year ended December 31, 2023. The decrease in gross loss was primarily due to an increase in negotiated contract rates discussed above, as well as an increase in the release of the loss accrual during the year ended December 31, 2024.

*Cost of revenue — provision for loss contracts related to service*. The Company recorded a provision for loss accrual during 2024 of $48.5 million, a decrease of $37.8 million compared to the provision for loss accrual of $86.3 million as of December 31, 2023. The Company decreased the provision primarily due to improved pricing structure and reduction of new GenDrive deployments in 2024, partially offset by an increase in the provision related to stationary systems.

*Cost of revenue — Power purchase agreements*. Cost of revenue from PPAs includes depreciation of assets utilized and service costs to fulfill PPA obligations and interest costs associated with certain financial institutions for leased equipment. Cost of revenue from PPAs for the year ended December 31, 2024 decreased $2.0 million, or 0.9%, to $216.9 million from $218.9 million for the year ended December 31, 2023. The increase in cost was primarily a result of an increase in the average number of units and customer sites party to these agreements. There was an average of 31,763 GenDrive units under PPAs during the year ended December 31, 2024 compared to 30,626 during the year ended December 31, 2023. The average number of hydrogen sites under PPA arrangements was 147 during the year ended December 31, 2024 compared to 132 during the year ended December 31, 2023. Gross loss decreased to (178.7%) for the year ended December 31, 2024 compared to (243.5)% for the year ended December 31, 2023. The decrease in gross loss was primarily due to improved pricing.

*Cost of revenue — fuel delivered to customers and related equipment*. Cost of revenue from fuel delivered to customers and related equipment represents the purchase of hydrogen from suppliers and internally produced hydrogen that is ultimately sold to customers. Cost of revenue from fuel delivered to customers for the year ended December 31, 2024 decreased $17.5 million, or 7.1%, to $228.8 million from $246.3 million for the year ended December 31, 2023. The decrease was primarily due to lower costs of purchased fuel, an increase in fuel internally produced by the Company, which is inherently lower in cost, as well as a recognition of the clean hydrogen production tax credit (“PTC”) of $4.0 million. Included in cost of revenue related to fuel delivered to customers and related equipment were inventory valuation adjustments of $3.5 million for the year ended December 31, 2024 compared to $6.5 million for the year ended December 31, 2023. Gross loss decreased to (133.8%) during the year ended December 31, 2024 compared to (271.8)% during the year ended December 31, 2023, primarily due to favorable fuel rates negotiated with certain customers, lower costs of purchased fuel, an increase in fuel internally produced by the Company and the decrease in inventory valuation adjustments described above.

### Expenses

*Research and development.* Research and development expenses include: materials to build development and prototype units, cash and non-cash compensation and benefits for the engineering and related staff, expenses for contract engineers, fees paid to consultants for services provided, materials and supplies consumed, facility related costs such as computer and network services, and other general overhead costs associated with our research and development activities. Research and development expense for the year ended December 31, 2024 decreased $36.5 million, or 32.1%, to $77.2 million from $113.7 million for the year ended December 31, 2023. The decrease was primarily due to headcount reductions as well as a decrease in component materials which are used for testing, prototypes and proof of concept.

*Selling, general and administrative.* Selling, general and administrative expenses include cash and non-cash compensation, benefits, amortization of intangible assets and related costs in support of our general corporate functions, including general management, finance and accounting, human resources, selling and marketing, information technology and legal services. Selling, general and administrative expenses for the year ended December 31, 2024 decreased $46.4 million, or 11.0%, to $376.1 million from $422.5 million for the year ended December 31, 2023. The decrease was primarily due to a decrease in stock compensation expense related to stock compensation forfeitures resulting from the 2024 Restructuring Plan announced in February 2024 as well as certain market-condition awards nearing the end of their vesting period and reduction in spend as a result of cost cutting initiatives, partially offset by an increase in the allowance for credit losses on accounts receivable.

*Restructuring.* Expenses related to the 2024 Restructuring Plan for the year ended December 31, 2024 was $8.2 million. The increase was due to severance and benefits related to the 2024 Restructuring Plan the Company announced in February 2024.

*Impairment.* The Company recorded an impairment charge of $949.3 million for the year ended December 31, 2024, as compared to $269.5 million for the year ended December 31, 2023. The increase was primarily due to the Company failing to meet 2024 sales and margin projections as well as decreased future cash flow projections across certain product lines including stationary, liquefiers and fuel cells for mobility projects related to HyVia. Additionally, the Company paused certain hydrogen production plant projects during 2024. This pause, as well as the decrease in cash flow projections, was primarily due to weakening demand in the global hydrogen market. As a result, the Company tested the recoverability of its long-lived assets and finite-lived intangibles by comparing the carrying values against undiscounted future cash flow projections and determined that an impairment existed.

The Company recorded impairment of goodwill of $0 for the year ended December 31, 2024, as compared to $249.5 million for the year ended December 31, 2023. The Company performs an impairment review of goodwill on an annual basis at October 1, and when a triggering event is determined to have occurred between annual impairment tests. Based on the results of our quantitative impairment analysis, the Company recognized an impairment charge of $249.5 million for the year ended December 31, 2023. As of December 31, 2024 and 2023, the Company had no goodwill.

*Change in fair value of contingent consideration.* The change in fair value of contingent consideration is related to earnouts for the Giner ELX, Inc. (“Giner”), United Hydrogen Group Inc. (“UHG”), Frames, and Joule acquisitions. The change in fair value for the year ended December 31, 2024 and 2023 was $(15.8) million and $30.0 million, respectively. The decrease was primarily due a decrease in the fair value of contingent consideration for Joule’s earn-out of $14.3 million during the year ended December 31, 2024 due to changes in management assumptions.

*Interest income*. Interest income primarily consists of income generated by our investment holdings, restricted cash escrow accounts, and money market accounts. Interest income for the year ended December 31, 2024 decreased $25.1 million, or 45.0%, as compared to the year ended December 31, 2023. The decrease during the year ended December 31, 2024 compared to December 31, 2023 was primarily due to the maturities and sale of the Company’s available-for-sale portfolio of higher-yielding U.S. treasury securities during 2023.

*Interest expense*. Interest expense consists of interest expense related to our long-term debt, convertible senior notes, obligations under finance leases and our finance obligations. Interest expense for the year ended December 31, 2024 increased $1.4 million, or 3.1%, as compared to the year ended December 31, 2023. The increase was primarily due to an increase in the average balance of the Company’s debt during the year ended December 31, 2024, which was driven by the 6.00% Convertible Debenture.

*Other income/(expense), net*. Other income/(expense), net primarily consists of foreign currency translation and gains and losses related to energy contracts. Other expense, net increased $19.9 million, or 19900.0%, during the year ended December 31, 2024 as compared to the year ended December 31, 2023. The increase was primarily due to losses related to energy contracts and foreign currency losses during the year ended December 31, 2024.

*Realized loss on investments, net*. Realized loss on investments, net consists of the sales related to available-for-sale debt securities and equity securities. For the year ended December 31, 2024, the Company had $0 net realized loss on investments as compared to $12.8 million for the year ended December 31, 2023. An other-than-temporary impairment charge of $10.8 million on the Company’s available-for-sale securities was taken during the third quarter of 2023 and was due to a change in the Company’s ability and intent to retain these investments for a period of time sufficient to allow for any anticipated recovery in the fair value. The other-than-temporary impairment charge was realized when the Company sold its remaining available-for-sale securities and equity securities during the fourth quarter of 2023.

*Change in fair value of equity securities*. Change in fair value of equity securities consists of the changes in fair value for equity securities from the purchase date to the end of the period. For the year ended December 31, 2024, the change in fair value of equity securities was $0 as compared to an increase of $11.4 million for the year ended December 31, 2023. The decrease was due to the Company selling its remaining equity securities during the fourth quarter of 2023.

*Loss on extinguishment of convertible senior notes and debt*. Loss on extinguishment of convertible senior notes and debt consists of losses that arise from retirement of the Company’s convertible senior notes and debt before maturity.

For the year ended December 31, 2024, the Company had loss on extinguishment of convertible senior notes and debt of $16.3 million as compared to loss on extinguishment of convertible senior notes and debt of $0 for the year ended December 31, 2023. These losses are driven from the exchange of $138.8 million in aggregate principal amount of the Company’s 3.50% Convertible Senior Notes for $140.4 million in aggregate principal amount of the Company’s new 7.00% Convertible Senior Notes during the first quarter of 2024.

*Change in fair value of debt*. Change in fair value of debt consists of losses that arise from the changes in fair value of the Company’s 6.00% Convertible Debenture. For the year ended December 31, 2024, the Company had change in fair value of debt of $3.4 million as compared to change in fair value of debt of $0 for the year ended December 31, 2023. These losses are driven from the fair value changes that arose from the re-measurement of the Company’s 6.00% Convertible Debenture as of December 31, 2024 compared to its fair value upon issuance.

*Loss on equity method investments*. Loss on equity method investments consists of our interest in HyVia, which is our 50/50 joint venture with Renault, AccionaPlug S.L., which is our 50/50 joint venture with Acciona, SK Plug Hyverse, which is our 49/51 joint venture with SK Innovation, and Clean H2 Infra Fund. For the year ended December 31, 2024, the Company recorded a loss of $32.2 million on equity method investments as compared to a loss of $41.8 million for the year ended December 31, 2023. These losses are driven from the start-up activities for commercial and production operations of the aforementioned investments.

### Income Taxes

The Company recorded $2.7 million of income tax benefit and $7.4 million of income tax benefit for the year ended December 31, 2024 and 2023, respectively. The income tax benefit for the year ended December 31, 2024 was due to an incremental change to the valuation allowance recorded in foreign jurisdictions. The Company has not changed its overall conclusion with respect to the need for a valuation allowance against its net deferred tax assets in the U.S., which remain fully reserved. Except for a few service entities mainly in Europe, all deferred tax assets are offset by a full valuation allowance because it is more likely than not that the tax benefits of the net operating loss carryforwards and other deferred tax assets will not be realized. As of December 31, 2024, the Company’s Netherlands subsidiary established a full valuation allowance on its deferred tax assets that will not be realized.

The domestic net deferred tax asset generated from the Company’s net operating loss has been offset by a full valuation allowance because it is more likely than not that the tax benefits of the net operating loss carryforward will not be realized. The Company recognizes accrued interest and penalties related to unrecognized tax benefits, if any, as a component of income tax expense.

The Organization for Economic Co-operation and Development Inclusive Framework on Base Erosion and Profit Shifting has proposed a global minimum corporate tax rate of 15% on multi-national corporations, commonly referred to as the Pillar Two rules that has been agreed upon in principle by over 140 countries. While the United States has not adopted the Pillar Two rules, numerous foreign countries have enacted legislation to implement the Pillar Two rules, effective beginning January 1, 2024, or are expected to enact similar legislation. As of December 31, 2024, the Company did not meet the consolidated revenue threshold and is not subject to the GloBE Rules under Pillar Two. The Company will continue to monitor the implementation of rules in the jurisdictions in which it operates.

### Public and Private Offerings of Equity and Debt

### “At-the-Market” Equity Offering Program

On January 17, 2024, the Company entered into the At Market Issuance Sales Agreement the Original ATM Agreement (the “ATM Agreement”) with B. Riley, pursuant to which the Company may, from time to time, offer and sell through or to B. Riley, as sales agent or principal, shares of the Company’s common stock, having an aggregate gross sales price of up to $1.0 billion. On each of February 23, 2024 and November 7, 2024, the Company amended the ATM Agreement to increase the amount of shares of the Company’s common stock available for sale under the Amended ATM Agreement to $1.0 billion. During the year ended December 31, 2024, the Company sold 219,835,221 shares of common stock at a weighted-average sales price of $3.08 per share for gross proceeds of $677.2 million with related issuance costs of $10.4 million. As of December 31, 2024, the Company had $1.0 billion remaining under the “at-the-market” equity offering program for future sales of common stock.

### Underwritten Public Offering of Common Stock

On July 22, 2024, the Company sold 78,740,157 shares of its common stock at a public offering price of $2.54 per share for net proceeds of $191.0 million after deducting the underwriting discount and related offering expenses.

### Secured Debt

During the second quarter of 2024, the Company began repaying the principal and interest on a $2.0 million allowance for tenant work related to its manufacturing facility in Slingerlands, NY. In accordance with ASC 842, Leases (“ASC 842”), the allowance is treated as a freestanding financial instrument separate from the facility lease and is accounted for as long-term debt. The outstanding principal and carrying value of the debt was $1.7 million as of December 31, 2024, $0.2 million and $1.5 million of which was classified as short-term and long-term, respectively, on the accompanying consolidated balance sheets.

In June 2020, the Company acquired debt as part of the acquisition of UHG. The outstanding carrying value of the debt was $1.2 million and $3.9 million as of December 31, 2024 and 2023, respectively. As of December 31, 2024, the outstanding principal on the debt was $2.1 million and the unamortized debt discount was $0.9 million, of which $0.4 million and $0.5 million was classified as short-term and long-term, respectively, bearing varying interest rates ranging from 7.3% to 7.6%. The debt is scheduled to mature in 2026. As of December 31, 2024, the principal balance was due at each of the following dates (in thousands):

| ​ | ​ | ​ ​ |
| --- | --- | --- |
| December 31, 2025 |  | **​** 1,200 |
| December 31, 2026 | ​ | **​** 900 |
| Total outstanding principal | ​ | $2,100 |

In March 2019, the Company entered into a loan and security agreement, as amended, with Generate Lending, LLC, providing for a secured term loan facility in the amount of $100 million (the “Term Loan Facility”). In December 2022, the Company fully repaid the outstanding balance of the Term Loan Facility, which resulted in a recording of a loss on the extinguishment of debt of $1.0 million on the consolidated statements of operations.

### 6.00% Convertible Debenture

On November 11, 2024, the Company entered into the Debenture Purchase Agreement pursuant to which the Company issued to Yorkville a convertible debenture (the “6.00% Convertible Debenture”) in exchange for the payment of $190.0 million. The 6.00% Convertible Debenture was issued in a private placement in reliance upon an exemption from registration provided by Section 4(a)(2) of the Securities Act. The 6.00% Convertible Debenture ranks pari passu in right of payment with all other outstanding and future senior indebtedness of the Company.

The 6.00% Convertible Debenture bears interest at a rate of 6.00% per annum and is payable on the second year anniversary of the issuance date of the 6.00% Convertible Debenture (the “Maturity Date”) or earlier redemption date. The interest rate will increase to a rate of 16.0% per annum upon the occurrence and during the continuance of an event of default under the 6.00% Convertible Debenture.

The 6.00% Convertible Debenture provides that Yorkville may convert all or any portion of the principal amount of the 6.00% Convertible Debenture, together with any accrued and unpaid interest thereon, at an initial conversion price of $2.90 (the “Fixed Price”), representing a conversion premium of 146% to the last reported sale price of the Company’s common stock on November 11, 2024. In certain circumstances, Yorkville will be permitted to convert up to $22.5 million aggregate principal amount of the 6.00% Convertible Debenture plus accrued and unpaid interest thereon, each calendar month beginning with December 2024, at a conversion price equal to the lower of the (1) Fixed Price and (2) 97.25% of the lowest daily volume-weighted average price for the Company’s common stock during the three trading days immediately preceding the applicable conversion date (the “Market Price”); provided that such Market Price is not less than $0.3941 (the “Floor Price”). The Fixed Price is subject to adjustment in certain circumstances including if the Company issues shares of common stock at price per share that is less than the Fixed Price or certain convertible securities with a conversion price that is less than the Fixed Price (the “Dilutive Price”), in which case the Fixed Price would be adjusted to equal the Dilutive Price, subject to certain exceptions. Yorkville is not permitted to convert the 6.00% Convertible Debenture to the extent that the shares of common stock deliverable upon conversion thereof would exceed

19.99% of the Company’s outstanding shares immediately prior to executing the Debenture Purchase Agreement (the “Exchange Cap”) without prior stockholder approval.

If (1) the volume-weighted average price of the Company’s common stock is below the Floor Price for a specified period of time, (2) the Company has issued more than 99% of the shares of common stock available under the Exchange Cap or (3) a registration default has occurred with respect to the resale registration statement registering the shares of common stock potentially underlying the 6.00% Convertible Debenture, then Yorkville may require the Company to redeem or convert, at the Company’s discretion, $22.5 million of the principal amount of the 6.00% Convertible Debenture, a premium thereon equal to 2.75% of such principal amount and accrued interest thereon on a monthly basis, unless and until such event is cured in accordance with the provisions of the 6.00% Convertible Debenture.

The Company has the right to redeem the 6.00% Convertible Debenture if the volume-weighted average price of the Company’s common stock is less than the Fixed Price at a redemption price equal to 102.75% of the principal amount redeemed plus accrued and unpaid interest thereon. The Company also has the right to redeem the 6.00% Convertible Debenture if the volume-weighted average price of the Company’s common stock is equal to or greater than the product of 1.3793 and the Fixed Price at a redemption price equal to 102.75% of the principal amount redeemed plus accrued and unpaid interest thereon or, in certain circumstances, 105.0% of the principal amount redeemed plus accrued and unpaid interest thereon.

The change in the carrying amount of the 6.00% Convertible Debenture for the year ended December 31, 2024 was as follows (in thousands):

| ​ ​ | ​ | ​ ​ December 31, 2024 |
| --- | --- | --- |
| Principal received at issuance | ​ | $190,000 |
| Payments of principal settled in cash | ​ | **​** (22,500) |
| Payments or principal settled in common stock | ​ | **​** — |
| Loss on debt extinguishment | ​ | **​** 1,613 |
| Change in fair value of the convertible senior note | ​ | **​** 3,424 |
| Amortization of discount | ​ | ​ 613 |
| Ending balance as of December 31, 2024 | ​ | $173,150 |

The following table summarizes the total interest expense and effective interest rate related to the 6.00% Convertible Debenture for the year ended December 31, 2024 (in thousands, except for the effective interest rate):

| ​ ​ ​ | ​ ​ | ​ ​ ​ Year ended ​ December 31, 2024 ​ |
| --- | --- | ---: |
| Interest expense | ​ | $1,596 ​ |
| Amortization of discount | ​ | ​ 613 ​ |
| Total | ​ | $2,209 ​ |
| Effective interest rate | ​ | **​** 8.7% |

### 7.00% Convertible Senior Notes

On March 20, 2024, the Company entered into separate, privately negotiated exchange agreements with certain holders of the Company’s outstanding 3.75% Convertible Senior Notes pursuant to which the Company exchanged $138.8 million in aggregate principal amount of the 3.75% Convertible Senior Notes, and accrued and unpaid interest of $1.6 million on such notes to, but excluding, March 20, 2024, for $140.4 million in aggregate principal amount of the Company’s new 7.00% Convertible Senior Notes due 2026, in each case, pursuant to the exemption from registration provided by Section 4(a)(2) under the Securities Act. Following the exchange, approximately $58.5 million in aggregate principal amount of the 3.75% Convertible Senior Notes remained outstanding with terms unchanged.

This transaction was accounted for as an extinguishment of debt. As a result, the Company recorded a loss on extinguishment of debt of $14.0 million in the consolidated statements of operations during the first quarter of 2024. Loss on extinguishment of debt arises from the difference between the net carrying amount of the Company’s debt and the fair value of the assets transferred to extinguish the debt.

The 7.00% Convertible Senior Notes are the Company’s senior, unsecured obligations and are governed by the terms of an Indenture (the “Indenture”), dated as of March 20, 2024, entered into between the Company and Wilmington Trust, National Association, as trustee. The 7.00% Convertible Senior Notes bear cash interest at the rate of 7.00% per annum, payable semi-annually in arrears on June 1 and December 1 of each year, beginning on June 1, 2024, to holders of record at the close of business on the preceding May 15 and November 15, respectively. The 7.00% Convertible Senior Notes mature on June 1, 2026, unless earlier converted or redeemed or repurchased by the Company.

The conversion rate for the 7.00% Convertible Senior Notes is initially 235.4049 shares of the Company’s common stock per $1,000 principal amount of 7.00% Convertible Senior Notes, which is equivalent to an initial conversion price of approximately $4.25 per share of common stock, which represents a premium of approximately 20% over the last reported sale price of the Company’s common stock on the Nasdaq Capital Market on March 12, 2024. The conversion rate and conversion price are subject to customary adjustments upon the occurrence of certain events. Prior to the close of business on the business day immediately preceding December 1, 2025, the 7.00% Convertible Senior Notes will be convertible at the option of the holders of the 7.00% Convertible Senior Notes only upon the satisfaction of specified conditions and during certain periods. On or after December 1, 2025 until the close of business on the second scheduled trading day immediately preceding the maturity date, the 7.00% Convertible Senior Notes will be convertible at the option of the holders of the 7.00% Convertible Senior Notes at any time regardless of these conditions. Conversions of the 7.00% Convertible Senior Notes will be settled in cash, shares of the Company’s common stock, or a combination thereof, at the Company’s election.

Subject to certain exceptions and subject to certain conditions, holders of the 7.00% Convertible Senior Notes may require the Company to repurchase their 7.00% Convertible Senior Notes upon the occurrence of a “Fundamental Change” (as defined in the Indenture) prior to maturity for cash at a repurchase price equal to 100% of the principal amount of the 7.00% Convertible Senior Notes to be repurchased plus accrued and unpaid interest, if any, to, but excluding, the repurchase date.

The 7.00% Convertible Senior Notes will be redeemable, in whole or in part, at the Company’s option at any time on or after June 5, 2025, at a cash redemption price equal to the principal amount of the 7.00% Convertible Senior Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date, but only if the last reported sale price per share of the Company’s common stock exceeds 130% of the then-applicable conversion price then in effect for at least 20 trading days (whether or not consecutive), including at least one of the three trading days immediately preceding the date the Company sends the related redemption notice, during any 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company sends such redemption notice.

In certain circumstances, conversions of 7.00% Convertible Senior Notes in connection with “Make-Whole Fundamental Changes” (as defined in the Indenture) or conversions of 7.00% Convertible Senior Notes called for redemption may result in an increase to the conversion rate, provided that the conversion rate will not exceed 282.4859 shares of the Company’s common stock per $1,000 principal amount of 7.00% Convertible Senior Notes, subject to adjustment. In such circumstance, a maximum of 39,659,890 shares of common stock, subject to adjustment, may be issued upon conversion of the 7.00% Convertible Senior Notes. There were no conversions of the 7.00% Convertible Senior Notes during the year ended December 31, 2024.

The 7.00% Convertible Senior Notes consisted of the following (in thousands):

| ​ ​ Principal amounts: | ​ ​ | ​ ​ December 31, 2024 ​ ​ |
| --- | --- | ---: |
| Principal | ​ | $140,396 |
| Unamortized debt premium, net of offering costs(1) | ​ | ​ 7,514 |
| Net carrying amount | ​ | $147,910 |

(1) Included in the consolidated balance sheets within convertible senior notes, net and amortized over the remaining life of the notes using the effective interest rate method.

The following table summarizes the total interest expense and effective interest rate related to the 7.00% Convertible Senior Notes for the year ended December 31, 2024 (in thousands, except for the effective interest rate):

| ​ ​ ​ | ​ ​ | ​ ​ ​ Year ended ​ December 31, 2024 ​ |
| --- | --- | ---: |
| Interest expense | ​ | $7,687 ​ |
| Amortization of premium | ​ | ​ (4,085) ​ |
| Total | ​ | $3,602 ​ |
| Effective interest rate | ​ | **​** 3.0% |

The estimated fair value of the 7.00% Convertible Senior Notes as of December 31, 2024 was approximately $112.5 million. The fair value estimation was primarily based on a quoted price in an active market.

### 3.75% Convertible Senior Notes

On May 18, 2020, the Company issued $200.0 million in aggregate principal amount of 3.75% Convertible Senior Notes due June 1, 2025 in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act. On May 29, 2020, the Company issued an additional $12.5 million in aggregate principal amount of 3.75% Convertible Senior Notes. On March 12, 2024, the Company exchanged $138.8 million in aggregate principal amount of the 3.75% Convertible Senior Notes for $140.4 million in aggregate principal amount of the Company’s new 7.00% Convertible Senior Notes due 2026. Following the exchange, approximately $58.5 million in aggregate principal amount of the 3.75% Convertible Senior Notes remained outstanding with terms unchanged.

The 3.75% Convertible Senior Notes bear interest at a rate of 3.75% per year, payable semi-annually in arrears on June 1 and December 1 of each year, beginning on December 1, 2020. The notes will mature on June 1, 2025, unless earlier converted, redeemed or repurchased in accordance with their terms.

The 3.75% Convertible Senior Notes are senior, unsecured obligations of the Company and rank senior in right of payment to any of the Company’s indebtedness that is expressly subordinated in right of payment to the notes, equal in right of payment to any of the Company’s existing and future liabilities that are not so subordinated, effectively junior in right of payment to any of the Company’s secured indebtedness to the extent of the value of the collateral securing such indebtedness, and structurally subordinated to all indebtedness and other liabilities, including trade payables, of its current or future subsidiaries.

Holders of the 3.75% Convertible Senior Notes may convert their notes at their option at any time prior to the close of the business day immediately preceding December 1, 2024 in the following circumstances:

1\) during any calendar quarter commencing after March 31, 2021, if the last reported sale price of the Company’s common stock exceeds 130% of the conversion price for each of at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter;

2\) during the five business days after any five consecutive trading day period (such five consecutive trading day period, the measurement period) in which the trading price per $1,000 principal amount of the 3.75% Convertible Senior Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day;

3\) if the Company calls any or all of the 3.75% Convertible Senior Notes for redemption, any such notes that have been called for redemption may be converted at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or

4\) upon the occurrence of specified corporate events, as described in the indenture governing the 3.75% Convertible Senior Notes.

On or after December 1, 2024, the holders of the 3.75% Convertible Senior Notes may convert all or any portion of their notes at any time prior to the close of business on the second scheduled trading day immediately preceding the maturity date regardless of the foregoing conditions. There were no conversions of the 3.75% Convertible Senior Notes during the years ended December 31, 2024 and 2023.

The initial conversion rate for the 3.75% Convertible Senior Notes is 198.6196 shares of the Company’s common stock per $1,000 principal amount of notes, which is equivalent to an initial conversion price of approximately $5.03 per share of the Company’s common stock, subject to adjustment upon the occurrence of specified events. Upon conversion, the Company will pay or deliver, as applicable, cash, shares of the Company’s common stock or a combination of cash and shares of the Company’s common stock, at the Company’s election. During the years ended December 31, 2023 and 2022, there were no conversions. During the year ended December 31, 2021, $15.2 million of the 3.75% Convertible Senior Notes were converted and the Company issued approximately 3.0 million shares of common stock in conjunction with these conversions.

In addition, following certain corporate events or following issuance of a notice of redemption, the Company will increase the conversion rate for a holder who elects to convert its notes in connection with such a corporate event or convert its notes called for redemption during the related redemption period in certain circumstances.

The 3.75% Convertible Senior Notes will be redeemable, in whole or in part, at the Company’s option at any time, and from time to time, on or after June 5, 2023 and before the 41st scheduled trading day immediately before the maturity date, at a cash redemption price equal to 100% of the principal amount of the notes to be redeemed, plus accrued and unpaid interest, if any, but only if the last reported sale price per share of the Company’s common stock exceeds 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive), including at least one of the three trading days immediately preceding the date the Company sends the related redemption notice, during any 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company sends such redemption notice.

If the Company undergoes a “fundamental change” (as defined in the Indenture), holders may require the Company to repurchase their notes for cash all or any portion of their notes at a fundamental change repurchase price equal to 100% of the principal amount of the notes to be repurchased, plus accrued and unpaid interest, to, but excluding, the fundamental change repurchase date.

The Company accounts for the 3.75% Convertible Senior Notes as a liability. We incurred transaction costs related to the issuance of the 3.75% Convertible Senior Notes of approximately $7.0 million, consisting of initial purchasers’ discount of approximately $6.4 million and other issuance costs of $0.6 million which were recorded as debt issuance cost (presented as contra debt in the consolidated balance sheets) and are being amortized to interest expense over the term of the 3.75% Convertible Senior Notes.

The 3.75% Convertible Senior Notes consisted of the following (in thousands):

| ​ ​ Principal amounts: | ​ ​ | ​ ​ December 31, 2024 ​ ​ | ​ ​ | ​ ​ December 31, 2023 ​ ​ |
| --- | --- | ---: | --- | ---: |
| Principal | ​ | $58,462 | ​ | $197,278 |
| Unamortized debt issuance costs(1) | ​ | ​ (189) | ​ | ​ (2,014) |
| Net carrying amount | ​ | $58,273 | ​ | $195,264 |

1\) Included in the consolidated balance sheets within the 3.75% Convertible Senior Notes, net and amortized over the remaining life of the notes using the effective interest rate method.

The following table summarizes the total interest expense and effective interest rate related to the 3.75% Convertible Senior Notes for the year ended December 31, 2024 (in thousands, except for effective interest rate):

| ​ ​ ​ | ​ ​ | ​ ​ ​ Year ended December 31, 2024 | ​ ​ ​ December 31, 2023 | ​ ​ ​ ​ December 31, 2022 ​ |
| --- | --- | ---: | ---: | ---: |
| Interest expense | ​ | $3,335 ​ | $7,546 ​ | $7,398 ​ |
| Amortization of debt issuance costs | ​ | ​ 642 ​ | ​ 1,345 ​ | ​ 1,286 ​ |
| Total | ​ | $3,977 ​ | $8,891 ​ | $8,684 ​ |
| Effective interest rate | ​ | **​** 4.5% | ​ 4.6% | **​** 4.5% |

The estimated fair value of the 3.75% Convertible Senior Notes as of December 31, 2024 and 2023 was approximately $44.9 million and $213.2 million, respectively. The fair value estimation was primarily based on a quoted price in an active market.

### Capped Call

In conjunction with the pricing of the 3.75% Convertible Senior Notes, the Company entered into privately negotiated capped call transactions (the “3.75% Notes Capped Call”) with certain counterparties at a price of $16.2 million. The 3.75% Notes Capped Call covers, subject to anti-dilution adjustments, the aggregate number of shares of the Company’s common stock that underlie the initial 3.75% Convertible Senior Notes and is generally expected to reduce potential dilution to the Company’s common stock upon any conversion of the 3.75% Convertible Senior Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted notes, as the case may be, with such reduction and/or offset subject to a cap based on the cap price. The cap price of the 3.75% Notes Capped Call is initially $6.7560 per share, which represents a premium of approximately 60% over the last then-reported sale price of the Company’s common stock of $4.11 per share on the date of the transaction and is subject to certain adjustments under the terms of the 3.75% Notes Capped Call. The 3.75% Notes Capped Call becomes exercisable if the conversion option is exercised.

The net cost incurred in connection with the 3.75% Notes Capped Call has been recorded as a reduction to additional paid-in capital in the consolidated balance sheets at the time the transactions were entered into. The book value of the 3.75% Notes Capped Call is not remeasured.

### Common Stock Transactions

### Amazon Transaction Agreement in 2022

On August 24, 2022, the Company and Amazon entered into a Transaction Agreement (the “2022 Amazon Transaction Agreement”), under which the Company concurrently issued to Amazon.com NV Investment Holdings LLC, a wholly owned subsidiary of Amazon, a warrant (the “2022 Amazon Warrant”) to acquire up to 16,000,000 shares (the “2022 Amazon Warrant Shares”) of the Company’s common stock, subject to certain vesting events described below. The Company and Amazon entered into the 2022 Amazon Transaction Agreement in connection with a concurrent commercial arrangement under which Amazon agreed to purchase hydrogen fuel from the Company through August 24, 2029.

1,000,000 of the 2022 Amazon Warrant Shares vested immediately upon issuance of the 2022 Amazon Warrant. 15,000,000 of the 2022 Amazon Warrant Shares will vest in multiple tranches over the 7-year term of the 2022 Amazon Warrant based on payments made to the Company directly by Amazon or its affiliates, or indirectly through third parties, with 15,000,000 of the 2022 Amazon Warrant Shares fully vesting if Amazon-related payments of $2.1 billion are made in the aggregate. The exercise price for the first 9,000,000 2022 Amazon Warrant Shares is $22.9841 per share and the fair value on the grant date was $20.36. The exercise price for the remaining 7,000,000 2022 Amazon Warrant Shares will be an amount per share equal to 90% of the 30-day volume weighted average share price of the Company’s common stock as of the final vesting event that results in full vesting of the first 9,000,000 2022 Amazon Warrant Shares. The 2022 Amazon Warrant is exercisable through August 24, 2029.

Upon the consummation of certain change of control transactions (as defined in the 2022 Amazon Warrant) prior to the vesting of at least 60% of the aggregate 2022 Amazon Warrant Shares, the 2022 Amazon Warrant will automatically vest and become exercisable with respect to an additional number of 2022 Amazon Warrant Shares such that 60% of the aggregate 2022 Amazon Warrant Shares shall have vested. If a change of control transaction is consummated after the vesting of at least 60% of the aggregate 2022 Amazon Warrant Shares, then no acceleration of vesting will occur with respect to any of the unvested 2022 Amazon Warrant Shares as a result of the transaction. The exercise price and the 2022 Amazon Warrant Shares issuable upon exercise of the 2022 Amazon Warrant are subject to customary antidilution adjustments.

On August 24, 2022, 1,000,000 of the 2022 Amazon Warrant Shares associated with tranche 1 vested. The warrant fair value associated with the vested shares of tranche 1 of $20.4 million was capitalized to contract assets based on the grant date fair value and is subsequently amortized ratably as a reduction to revenue based on the Company’s estimate of revenue over the term of the agreement. As of December 31, 2024, the balance of the contract asset related to tranche 1 was $16.5 million which is recorded in contract assets in the Company’s consolidated balance sheets. During the second quarter of 2023, all 1,000,000 of the Amazon Warrant Shares associated with tranche 2 vested. The warrant fair value associated with the vested shares of tranche 2 was $20.4 million and was determined on the grant date of August 24, 2022. As of December 31, 2024, the balance of the contract asset related to tranche 2 was $16.5 million. Tranche 3 will vest over the next $1.0 billion of collections from Amazon and its affiliates. The grant date fair value of tranche 3 will also be amortized ratably as a reduction to revenue based on the Company’s estimate of revenue over the term of the agreement. As of December 31, 2024, the balance of the contract asset related to tranche 3 was $0.2 million. Because the exercise price has yet to be determined, if probable of vesting, the fair value of tranche 4 will be remeasured at each reporting period end and amortized ratably as a reduction to revenue based on the Company’s estimate of revenue over the term of the agreement.

As of December 31, 2024 and 2023, 3,000,000 and 2,000,000 of the 2022 Amazon Warrant Shares had vested, respectively, and none of the 2022 Amazon Warrant Shares had been exercised. The total amount of provision for common stock warrants recorded as a reduction of revenue for the 2022 Amazon Warrant during the years ended December 31, 2024, 2023 and 2022 was $19.0 million, $4.9 million and $5.2 million, respectively.

### Amazon Transaction Agreement in 2017

On April 4, 2017, the Company and Amazon entered into a Transaction Agreement (the “2017 Amazon Transaction Agreement”), pursuant to which the Company agreed to issue to Amazon.com NV Investment Holdings LLC, a warrant (the “2017 Amazon Warrant”) to acquire up to 55,286,696 shares (the “2017 Amazon Warrant Shares”) of the Company’s common stock, subject to certain vesting events. The Company and Amazon entered into the 2017 Amazon Transaction Agreement in connection with existing commercial agreements between the Company and Amazon with respect to the deployment of the Company’s GenKey fuel cell technology at Amazon distribution centers. The vesting of the 2017 Amazon Warrant Shares was conditioned upon payments made by Amazon or its affiliates (directly or indirectly through third parties) pursuant to the existing commercial agreements. On December 31, 2020, the Company waived the remaining vesting conditions under the 2017 Amazon Warrant, which resulted in the immediate vesting of all the third tranche of the 2017 Amazon Warrant Shares.

As of December 31, 2024 and 2023, all 55,286,696 of the 2017 Amazon Warrant Shares had vested and the 2017 Amazon Warrant was exercised with respect to 34,917,912 shares of the Company’s common stock. The total amount of provision for common stock warrants recorded as a reduction of revenue for the 2017 Amazon Warrant during the years ended December 31, 2024, 2023 and 2022 was $0.4 million, $0.4 million and $0.4 million, respectively.

### Walmart Transaction Agreement

On July 20, 2017, the Company and Walmart entered into a Transaction Agreement (the “Walmart Transaction Agreement”), pursuant to which the Company agreed to issue to Walmart a warrant (the “Walmart Warrant”) to acquire up to 55,286,696 shares of the Company’s common stock, subject to certain vesting events (the “Walmart Warrant Shares”). The Company and Walmart entered into the Walmart Transaction Agreement in connection with existing commercial agreements between the Company and Walmart with respect to the deployment of the Company’s GenKey fuel cell technology across various Walmart distribution centers. The existing commercial agreements contemplate, but do not guarantee, future purchase orders for the Company’s fuel cell technology. The vesting of the warrant shares was conditioned upon payments made by Walmart or its affiliates (directly or indirectly through third parties) pursuant to transactions entered into after January 1, 2017 under existing commercial agreements.

The majority of the Walmart Warrant Shares will vest based on Walmart’s payment of up to $600.0 million to the Company in connection with Walmart’s purchase of goods and services from the Company. The first tranche of 5,819,652 Walmart Warrant Shares vested upon the execution of the Walmart Warrant and was fully exercised as of December 31, 2020. Accordingly, $10.9 million, the fair value of the first tranche of Walmart Warrant Shares, was recorded as a provision for common stock warrants and presented as a reduction to revenue on the consolidated statements of operations during 2017. All future provision for common stock warrants is measured based on the fair value of the awards and recorded as a charge against revenue. The second tranche of 29,098,260 Walmart Warrant Shares vested in four installments of 7,274,565 Walmart Warrant Shares each time Walmart or its affiliates, directly or indirectly through third parties, made an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $200.0 million in the aggregate.

The exercise price for the first and second tranches of Walmart Warrant Shares was $2.1231 per share. After Walmart has made payments to the Company totaling $200.0 million, the third tranche of 20,368,784 Walmart Warrant

Shares will vest in eight installments of 2,546,098 Walmart Warrant Shares each time Walmart or its affiliates, directly or indirectly through third parties, make an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $400.0 million in the aggregate. The exercise price of the third tranche of the Walmart Warrant Shares is $6.28 per share, which was determined pursuant to the terms of the Walmart Warrant as an amount equal to 90% of the 30-day volume weighted average share price of the Company’s common stock as of October 30, 2023, the final vesting date of the second tranche of the Walmart Warrant Shares. The Walmart Warrant is exercisable through July 20, 2027. The Walmart Warrant provides for net share settlement that, if elected by the holder, will reduce the number of shares issued upon exercise to reflect net settlement of the exercise price. The Walmart Warrant provides for certain adjustments that may be made to the exercise price and the number of shares of common stock issuable upon exercise due to customary anti-dilution provisions based on future events. The Walmart Warrant is classified as an equity instrument. As of December 31, 2024, the balance of the contract asset related to the Walmart Warrant was $2.6 million.

As of December 31, 2024 and 2023, 40,010,108 and 34,917,912 of the Walmart Warrant Shares had vested, respectively, and the Walmart Warrant was exercised with respect to 13,094,217 shares of the Company’s common stock. The total amount of provision for common stock warrants recorded as a reduction of revenue for the Walmart Warrant during the years ended December 31, 2024, 2023 and 2022 was $19.6 million, $5.9 million, and $7.1 million, respectively.

### Operating and Finance Lease Liabilities

As of December 31, 2024, the Company had operating leases, as lessee, primarily associated with sale/leaseback transactions that are partially secured by restricted cash, security deposits and pledged escrows (see also Note 1, “Nature of Operations”) as summarized below. These leases expire over the next one to six years. Minimum rent payments under operating leases are recognized on a straight-line basis over the term of the lease.

Leases contain termination clauses with associated penalties, the amount of which cause the likelihood of cancellation to be remote. At the end of the lease term, the leased assets may be returned to the lessor by the Company, the Company may negotiate with the lessor to purchase the assets at fair market value, or the Company may negotiate with the lessor to renew the lease at market rental rates. No residual value guarantees are contained in the leases. No financial covenants are contained within the lease, however there are customary operational covenants such as assurance the Company properly maintains the leased assets and carries appropriate insurance, etc. The leases include credit support in the form of either cash, collateral or letters of credit. See Note 23, “Commitments and Contingencies”, for a description of cash held as security associated with the leases.

The Company has finance leases associated with its property and equipment in Latham, New York and at fueling customer locations.

Future minimum lease payments under operating and finance leases (with initial or remaining lease terms in excess of one year) as of December 31, 2024 were as follows (in thousands):

| ​ ​ ​ ​ | ​ ​ ​ | ​ ​ ​ ​ Operating Lease Liability | ​ ​ ​ | ​ ​ Finance Lease Liability | ​ ​ | ​ ​ Total Lease Liabilities |
| --- | --- | --- | --- | ---: | --- | --- |
| 2025 | ​ | $100,882 | ​ | $14,786 | ​ | $115,668 |
| 2026 | ​ | ​ 88,834 | ​ | 11,926 | ​ | ​ 100,760 |
| 2027 | ​ | ​ 74,819 | ​ | 8,250 | ​ | ​ 83,069 |
| 2028 | ​ | ​ 52,459 | ​ | 1,940 | ​ | ​ 54,399 |
| 2029 | ​ | ​ 28,877 | ​ | ​ 400 | ​ | ​ 29,277 |
| 2030 and thereafter | ​ | ​ 128,374 | ​ | ​ 2,898 | ​ | ​ 131,272 |
| Total future minimum payments | ​ | ​ 474,245 | ​ | 40,200 | ​ | ​ 514,445 |
| Less imputed interest | ​ | ​ (160,847) | ​ | ​ (4,620) | ​ | ​ (165,467) |
| Total | ​ | $313,398 | ​ | $35,580 | ​ | $348,978 |

Rental expense for all operating leases was $98.1 million, $95.0 million, and $67.6 million for the years ended December 31, 2024, 2023 and 2022, respectively.

As of December 31, 2024 and 2023, security deposits associated with sale/leaseback transactions were $7.4 million and $7.4 million, respectively, and were included in other assets in the consolidated balance sheets.

Other information related to the operating leases are presented in the following table:

| ​ ​ ​ | ​ ​ | ​ ​ ​ Year ended December 31, 2024 | ​ ​ ​ Year ended December 31, 2023 | ​ ​ ​ Year ended ​ December 31, 2022 ​ |
| --- | --- | --- | --- | --- |
| Cash payments - operating cash flows (in thousands) | ​ | $99,934 ​ | $91,637 ​ | $63,214 ​ |
| Weighted average remaining lease term (years) | ​ | ​ 7.06 ​ | ​ 5.76 ​ | ​ 6.52 ​ |
| Weighted average discount rate | ​ | ​ 11.1% | ​ 11.3% | ​ 11.2% |

Finance lease costs include amortization of the right of use assets (i.e., depreciation expense) and interest on lease liabilities (i.e., interest expense in the consolidated statements of operations), and were $7.2 million, $7.5 million and $6.2 million for the years ended December 31, 2024, 2023 and 2022, respectively.

As of December 31, 2024 and 2023, the right of use assets associated with finance leases, net was $51.8 million and $57.3 million, respectively. The accumulated depreciation for these right of use assets was $12.9 million and $9.0 million at December 31, 2024 and 2023, respectively.

Other information related to the finance leases are presented in the following table:

| ​ ​ ​ | ​ ​ | ​ ​ ​ Year ended December 31, 2024 | ​ ​ ​ Year ended December 31, 2023 | ​ ​ ​ Year ended ​ December 31, 2022 ​ |
| --- | --- | ---: | ---: | ---: |
| Cash payments - operating cash flows (in thousands) | ​ | $2,740 ​ | $3,059 ​ | $2,447 ​ |
| Cash payments - financing cash flows (in thousands) | ​ | $9,341 ​ | $8,638 ​ | $6,586 ​ |
| Weighted average remaining lease term (years) | ​ | ​ 3.09 ​ | ​ 3.87 ​ | ​ 3.92 ​ |
| Weighted average discount rate | ​ | ​ 6.8% | ​ 6.8% | ​ 6.7% |

The Company had outstanding obligations to Wells Fargo under several Master Lease Agreements totaling $132.2 million and $171.3 million for the years ended December 31, 2024 and 2023, respectively. These outstanding obligations are included in the operating lease liabilities and finance obligations financial statement line items on the consolidated balance sheets.

### Finance Obligations

The Company has sold future services to be performed associated with certain sale/leaseback transactions and recorded the balance as a finance obligation. The outstanding balance of this obligation at December 31, 2024 was $276.7 million, $77.5 million and $199.2 million of which was classified as short-term and long-term, respectively, on the accompanying consolidated balance sheets. The outstanding balance of this obligation at December 31, 2023 was $350.8 million, $74.0 million and $276.8 million of which was classified as short-term and long-term, respectively, on the accompanying consolidated balance sheets. The amount is amortized using the effective interest method. Interest expense recorded related to finance obligations for the years ended December 31, 2024, 2023 and 2022 was $36.7 million, $39.6 million and $29.7 million, respectively.

During the year ended December 31, 2024, the Company entered into failed sale/leaseback transactions that were accounted for as financing obligations, resulting in $60.3 million of additional finance obligations. No gain or loss was recorded as a result of these transactions. The outstanding balance of the Company’s finance obligations related to sale/leaseback transactions as of December 31, 2024 was $70.7 million, $5.6 million and $65.1 million of which was classified as short-term and long-term, respectively on the accompanying consolidated balance sheets with a residual value of $37.7 million. The outstanding balance of the Company’s finance obligations related to sale/leaseback transactions as of December 31, 2023 was $17.6 million, $10.0 million and $7.6 million of which was classified as short-term and long-term, respectively on the accompanying consolidated balance sheets with no residual value.

Future minimum payments under finance obligations notes above as of December 31, 2024 were as follows (in thousands):

| ​ ​ ​ ​ | ​ ​ ​ | ​ ​ ​ ​ Sale of Future Revenue - Debt | ​ ​ ​ | ​ ​ ​ Sale/Leaseback Financings | ​ ​ ​ | ​ ​ Total Finance Obligations |
| --- | --- | --- | --- | --- | --- | --- |
| 2025 | ​ | $104,547 | ​ | $18,525 | ​ | $123,072 |
| 2026 | ​ | ​ 87,824 | ​ | ​ 14,698 | ​ | ​ 102,522 |
| 2027 | ​ | ​ 71,253 | ​ | ​ 14,698 | ​ | ​ 85,951 |
| 2028 | ​ | ​ 51,188 | ​ | ​ 14,484 | ​ | ​ 65,672 |
| 2029 | ​ | ​ 24,082 | ​ | ​ 12,153 | ​ | ​ 36,235 |
| 2030 and thereafter | ​ | ​ 1,421 | ​ | ​ 11,742 | ​ | ​ 13,163 |
| Total future minimum payments | ​ | ​ 340,315 | ​ | ​ 86,300 | ​ | ​ 426,615 |
| Less imputed interest | ​ | ​ (63,606) | ​ | ​ (53,297) | ​ | ​ (116,903) |
| Total | ​ | $276,709 | ​ | $33,003 | ​ | $309,712 |

Other information related to the above finance obligations are presented in the following table:

| ​ ​ ​ | ​ ​ | ​ ​ ​ Year ended ​ December 31, 2024 | ​ ​ ​ Year ended ​ December 31, 2023 | ​ ​ ​ Year ended ​ December 31, 2022 ​ |
| --- | --- | --- | --- | --- |
| Cash payments (in thousands) | ​ | $117,988 ​ | $96,781 ​ | $72,377 ​ |
| Weighted average remaining term (years) | ​ | ​ 4.10 ​ | ​ 4.49 ​ | ​ 4.84 ​ |
| Weighted average discount rate | ​ | ​ 12.3% | ​ 11.3% | ​ 11.1% |

The fair value of the Company’s total finance obligations approximated their carrying value for the years ended December 31, 2024 and December 31, 2023

### Extended Maintenance Contracts

On a quarterly basis, we evaluate any potential losses related to our extended maintenance contracts for fuel cell systems and related infrastructure that has been sold. We measure loss accruals at the customer contract level. The expected revenues and expenses for these contracts include all applicable expected costs of providing services over the remaining term of the contracts and the related unearned net revenue. A loss is recognized if the sum of expected costs of providing services under the contract exceeds related unearned net revenue and is recorded as a provision for loss contracts related to service in the consolidated statements of operations. As we continue to work to improve quality and reliability, unanticipated additional quality issues or warranty claims may arise and additional material charges may be incurred in the future. These quality issues could also adversely affect our contract loss accrual. The Company has undertaken and will undertake several other initiatives to extend the life and improve the reliability of its equipment. As a result of these initiatives and our additional expectation that the increase in certain costs will abate, the Company believes that its contract loss accrual is sufficient. However, if elevated service costs persist, the Company will adjust its estimated future service costs and increase its contract loss accrual estimate.

The following table shows the roll forward of balances in the accrual for loss contracts (in thousands):

| ​ ​ ​ | ​ ​ | ​ ​ Year ended December 31, 2024 | ​ ​ | ​ ​ Year ended December 31, 2023 |
| --- | --- | --- | --- | --- |
| Beginning balance | ​ | $137,853 | ​ | $81,066 |
| Provision for loss accrual | ​ | ​ 45,226 | ​ | ​ 85,375 |
| Releases to service cost of sales | ​ | **​** (51,578) | ​ | ​ (29,713) |
| Increase to loss accrual related to customer warrants | ​ | **​** 3,313 | ​ | ​ 971 |
| Foreign currency translation adjustment | ​ | **​** (458) | ​ | ​ 154 |
| Ending balance | ​ | $134,356 | ​ | $137,853 |

The Company decreased the provision for loss accrual primarily due to improved pricing structure and reduction of new GenDrive deployments in 2024, partially offset by an increase in the provision related to stationary systems.

### Product Warranty Reserve

On a quarterly basis, we evaluate our product warranty reserve. The Company applies a failure rate based on product type on a contract-by-contract basis to determine its product warranty reserve liability. The following table shows the roll forward of product warranty reserve (in thousands):

| ​ ​ ​ | ​ ​ | ​ ​ Year ended December 31, 2024 | ​ ​ | ​ ​ Year ended December 31, 2023 |
| --- | --- | --- | --- | --- |
| Beginning balance | ​ | $8,044 | ​ | $2,954 |
| Additional provision due to new issuances | ​ | ​ 8,864 | ​ | ​ 7,599 |
| Adjustments to existing warranty provisions | ​ | ​ (4,801) | ​ | ​ (2,509) |
| Releases due to cash receipts | ​ | **​** — | ​ | ​ — |
| Ending balance | ​ | $12,107 | ​ | $8,044 |

The product warranty reserve balance increased during the year ended December 31, 2024 primarily due to an increase in electrolyzer systems for which revenue was recognized.

### Restricted Cash

In connection with certain of the above noted sale/leaseback agreements, cash of $476.2 million and $573.5 million, respectively, was required to be restricted as security as of December 31, 2024 and 2023, which will be released over the lease term. As of December 31, 2024 and 2023, the Company also had certain letters of credit backed by security deposits totaling $276.4 million and $370.7 million, respectively, of which $242.7 million and $340.0 million are security for the above noted sale/leaseback agreements, respectively, and $33.7 million and $30.7 million are customs related letters of credit, respectively.

As of December 31, 2024 and 2023, the Company had $73.7 million and $76.8 million, respectively, held in escrow related to the construction of certain hydrogen production plants.

The Company also had $1.2 million of consideration held by our paying agent in connection with the Joule acquisition reported as restricted cash as of December 31, 2024 and 2023, with a corresponding accrued liability on the Company’s consolidated balance sheets. The Company also had $0.1 million and $0.2 million of consideration held by our paying agent in connection with the CIS acquisition reported as restricted cash as of December 31, 2024 and 2023, respectively, with a corresponding accrued liability on the Company’s consolidated balance sheets. Additionally, the Company had $7.4 million and $11.7 million in restricted cash as collateral resulting from the Frames acquisition as of December 31, 2024 and 2023, respectively.

### Guarantee

On May 30, 2023, our joint venture, HyVia, entered into a government grant agreement with Bpifrance. As part of the agreement, our wholly-owned subsidiary, Plug Power France, was required to issue a guarantee to Bpifrance in the amount of €20.0 million through the end of January 2027. Plug Power France is liable to the extent of the guarantee for sums due to Bpifrance from HyVia under the agreement based on the difference between the total amount paid by Bpifrance and the final amount certified by HyVia and Bpifrance. As part of the agreement, there are certain milestones that HyVia is required to meet, and the nonperformance of these milestones or termination of this agreement could result in this guarantee being called upon. As of December 31, 2024, no payments related to this guarantee have been made. The Company and Plug Power France recorded a liability of $2.0 million related to this guarantee based on the Company’s estimate of the guarantee being called upon.

### Commitments to Equity Method Investments

The Company’s capital commitments related to its equity method investments as of December 31, 2024 includes $4.6 million to be made during 2025.

### Unconditional Purchase Obligations

The Company has entered into certain off–balance sheet commitments that require the future purchase of goods or services (“unconditional purchase obligations”). The Company’s unconditional purchase obligations primarily consist of supplier arrangements, take or pay contracts and service agreements. For certain vendors, the Company’s unconditional obligation to purchase a minimum quantity of raw materials at an agreed upon price is fixed and determinable; while certain other raw material costs will vary due to product forecasting and future economic conditions.

Future payments under non-cancelable unconditional purchase obligations with a remaining term in excess of one year as of December 31, 2024, were as follows (in thousands):

| ​ | ​ | ​ ​ |
| --- | --- | --- |
| 2025 |  | $40,914 |
| 2026 | ​ | ​ 50,782 |
| 2027 | ​ | ​ 64,852 |
| 2028 | ​ | ​ — |
| 2029 | ​ | ​ — |
| 2030 and thereafter | ​ | ​ — |
| Total | ​ | ​ 156,548 |

### Restructuring

In February 2024, in a strategic move to enhance our financial performance and ensure long-term value creation in a competitive market, we approved the 2024 Restructuring Plan, a comprehensive initiative that encompassed a broad range of measures, including operational consolidation, strategic workforce adjustments, and various other cost-saving actions. These measures were aimed at increasing efficiency, improving scalability, and maintaining our leadership position in the renewable energy industry. We began executing the 2024 Restructuring Plan in February 2024 and it was effectively completed during the fourth quarter of 2024.

The determination of when we accrue for involuntary termination benefits under restructuring plans depends on whether the termination benefits are provided under an ongoing benefit arrangement or under a one-time benefit arrangement. We account for involuntary termination benefits that are provided pursuant to one-time benefit arrangements in accordance with ASC 420, Exit or Disposal Cost Obligations (“ASC 420”) whereas involuntary termination benefits that are part of an ongoing written or substantive plan are accounted for in accordance with ASC 712, Nonretirement Postemployment Benefits (“ASC 712”). We accrue a liability for termination benefits under ASC 420 in the period in which the plan is communicated to the employees and the plan is not expected to change significantly. For ongoing benefit arrangements, inclusive of statutory requirements, we accrue a liability for termination benefits under ASC 712 when the existing situation or set of circumstances indicates that an obligation has been incurred, it is probable the benefits will be paid, and the amount can be reasonably estimated. The restructuring charges that have been incurred but not yet paid are recorded in accrued expenses and other current liabilities in our consolidated balance sheets, as they are expected to be paid within the next twelve months.

During the year ended December 31, 2024, we incurred $8.1 million in restructuring costs recorded as severance expenses of $6.9 million and other restructuring costs of $1.2 million in the restructuring financial statement line item in the consolidated statements of operations. Severance expense recorded during the year ended December 31, 2024 in accordance with ASC 420 was a result of the separation of full-time employees associated with the 2024 Restructuring Plan. As of December 31, 2024, $0.1 million of accrued severance-related costs were included in accrued expenses in our consolidated balance sheets and are expected to be paid during 2025. For the year ended December 31, 2024, other restructuring costs were represented by (1) $0.2 million of legal and professional services costs, and (2) $1.0 million of other one-time employee termination benefits. As of December 31, 2024, $28 thousand of accrued other restructuring costs were included in accrued expenses in our consolidated balance sheets and are expected to be paid during 2025.

### Tax Credits

### Section 45V Credit for Production of Clean Hydrogen

Beginning in the second quarter of 2024, the Company determined that it qualifies for the PTC under Section 45V as part of the IRA resulting from operation of the Company’s hydrogen production plant located in Georgia. The PTC is available for qualified clean hydrogen produced and sold during the 10-year period beginning on the date the qualified clean hydrogen production facility was originally placed in service. The Company has chosen elective pay, also referred to as direct pay, for the 2024 taxable year. This election makes the PTC refundable, as the Company can receive the full value of the credit from the Internal Revenue Service. This election will apply to the 2024 taxable year and the four subsequent taxable years unless revoked. During the remaining five years of the 10-year period to receive the PTC, the Company can elect to transfer all or a portion of the PTC to a third party buyer in exchange for cash. The Company has analogized the accounting of the PTC to accounting for government grants due to the ability to receive payment for the credit regardless of whether the Company has an income tax liability.

As the PTC is a refundable credit (i.e., a credit with a direct-pay option available), the PTC is outside the scope of ASC 740, *Income Taxes (“*ASC 740”). Therefore, the Company has analogized the accounting of the PTC to accounting for government grants due to the ability to receive payment for the credit regardless of whether the Company has an income tax liability. Under a government grant model, once it is reasonably assured that the entity will comply with the conditions of the grant, the grant money should be recognized on a systematic basis over the period in which the entity recognizes the related expenses or losses for which the grant money is intended to compensate. The Company recognizes grants once it is probable that both of the following conditions will be met: (1) the Company is eligible to receive the grant and (2) the Company is able to comply with the relevant conditions of the grant.

With respect to the PTC, based on our current production, the Company expects to qualify for the full $3 per kg credit. For the year ended December 31, 2024 the Company recognized PTC of $4.0 million as a reduction to the fuel delivered to customers and related equipment costs of revenue financial statement line item in the consolidated statements of operations and $4.5 million as an increase to the other assets financial statement line item in the consolidated balance sheets.

### Section 48 Credit for Qualified Fuel Cell Properties of Energy Storage Technologies

As of December 31, 2024 the Company determined that it qualifies for the Section 48 ITC for Qualified Fuel Cell Properties of Energy Storage Technologies related to its hydrogen storage and liquefaction assets at its Georgia hydrogen plant. A base rate credit of 6% is available to qualified energy storage property in the year that it is placed in-service, with availability of increased credit rates if the property qualifies. The Company determined that it qualified for a rate credit of 30%. As the ITC is considered a transferable tax credit, the Company is accounting for it as a grant related to assets. Therefore, the ITC is recognized as a reduction to the Georgia hydrogen production plant’s cost-basis, recognized within the “property, plant, and equipment, net” financial statement line item of the consolidated balance sheets, which will reduce future depreciation over the next 30 years. The amount of the ITC, which is recognized in the prepaid expenses, tax credits, and other current assets financial statement line item of the consolidated balance sheets as of December 31, 2024, was $31.3 million.

### Critical Accounting Estimates

The consolidated financial statements of the Company have been prepared in conformity with U.S. generally accepted accounting principles, which require management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. On an on-going basis, we evaluate our estimates and judgments, including but not limited to those related to revenue recognition, valuation of inventories and intangible assets, valuation of long-lived assets, valuation of equity method investments, accrual for service loss contracts, operating and finance leases, allowance for credit losses, unbilled revenue, common stock warrants, stock-based compensation, income taxes, and contingencies. We base our estimates and judgments on historical experience and on various other factors and assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about (1) the carrying values of assets and liabilities and (2) the amount of revenue and expenses realized that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

We believe that the following are our most critical accounting estimates and assumptions the Company must make in the preparation of our consolidated financial statements and related notes thereto.

### Revenue Recognition

The Company enters into contracts that may contain one or a combination of fuel cell systems and infrastructure, installation, maintenance, spare parts, fuel delivery and other support services. Contracts containing fuel cell systems and related infrastructure may be sold directly to customers or provided to customers under a PPA. The Company also enters into contracts that contain electrolyzer stacks, systems, maintenance, and other support services. Furthermore, the Company enters into contracts related to the sales of cryogenic equipment, liquefaction systems and engineered equipment.

The Company does not include a right of return on its products other than rights related to standard warranty provisions that permit repair or replacement of defective goods. The Company accrues for anticipated standard warranty costs at the same time that revenue is recognized for the related product, or when circumstances indicate that warranty costs will be incurred, as applicable. Any prepaid amounts would only be refunded to the extent services have not been provided or the fuel cell systems or infrastructure have not been delivered.

Revenue is measured based on the transaction price specified in a contract with a customer, subject to the allocation of the transaction price to distinct performance obligations as discussed below. The Company recognizes revenue when it satisfies a performance obligation by transferring a product or service to a customer.

Promises to the customer are separated into performance obligations and are accounted for separately if they are (1) capable of being distinct and (2) distinct in the context of the contract. The Company considers a performance obligation to be distinct if the customer can benefit from the good or service either on its own or together with other resources readily available to the customer and the Company’s promise to transfer the goods or service to the customer is separately identifiable from other promises in the contract. The Company allocates revenue to each distinct performance obligation based on relative standalone selling prices.

Payment terms for sales of fuel cells, infrastructure, and service to customers are typically 30 to 90 days from shipment of the goods. Payment terms on electrolyzer systems are typically based on achievement of milestones over the term of the contract with the customer. Sale/leaseback transactions with financial institutions are invoiced and collected upon transaction closing. Service is prepaid upfront in a majority of the arrangements. The Company does not adjust the transaction price for a significant financing component when the performance obligation is expected to be fulfilled within a year.

The Company has issued to each of Amazon.com NV Investment Holdings LLC and Walmart warrants to purchase shares of the Company’s common stock. The Company presents the provision for common stock warrants within each revenue-related line item on the consolidated statements of operations. This presentation reflects the discount that those common stock warrants represent, and therefore revenue is net of these non-cash charges. The provision of common stock warrants is allocated to the relevant revenue-related line items based upon the expected mix of the revenue for each respective contract. See Note 19, “Warrant Transaction Agreements”, for more details.

#### Nature of goods and services

The following is a description of principal activities from which the Company generates its revenue.

(a) Sales of equipment, related infrastructure and other

(i) Sales of fuel cell systems, related infrastructure and equipment

Revenue from sales of fuel cell systems, related infrastructure, and equipment represents sales of our GenDrive units, GenSure stationary backup power units, as well as hydrogen fueling infrastructure.

The Company uses a variety of information sources in determining standalone selling prices for fuel cells systems and the related infrastructure. For GenDrive fuel cells, given the nascent nature of the Company’s market, the Company considers several inputs, including prices from a limited number of standalone sales as well as the Company’s negotiations with customers. The Company also considers its costs to produce fuel cells as well as comparable list prices in estimating standalone selling prices. The Company uses applicable observable evidence from similar products in the market to determine standalone selling prices for GenSure stationary backup power units and hydrogen fueling infrastructure. The determination of standalone selling prices of the Company’s performance obligations requires significant judgment, including periodic assessment of pricing approaches and available observable evidence in the market. Once relative standalone selling prices are determined, the Company proportionately allocates the transaction price to each performance obligation within the customer arrangement based upon standalone selling price. The allocated transaction price related to fuel cell systems and spare parts is recognized as revenue at a point in time which usually occurs upon delivery (and occasionally at time of shipment). Revenue on hydrogen infrastructure installations is generally recognized at the point at which transfer of control passes to the customer, which usually occurs upon customer acceptance of the hydrogen infrastructure. The Company uses an input method to determine the amount of revenue to recognize during each reporting period when such revenue is recognized over time, based on the costs incurred to satisfy the performance obligation.

(ii) Sales of electrolyzer systems and solutions

Revenue from sales of electrolyzer systems and solutions represents sales of electrolyzer stacks and systems used to generate hydrogen for various applications including mobility, ammonia production, methanol production, power to gas, and other uses.

The Company uses a variety of information sources in determining standalone selling prices for electrolyzer systems solutions. Electrolyzer stacks are typically sold on a standalone basis and the standalone selling price is the contractual price with the customer. The Company uses an adjusted market assessment approach to determine the standalone selling price of electrolyzer systems. This includes considering both standalone selling prices of the systems by the Company and available information on competitor pricing on similar products. The determination of standalone selling prices of the Company’s performance obligations requires judgment, including periodic assessment of pricing approaches and available observable evidence in the market. Once relative standalone selling prices are determined, the Company proportionately allocates the transaction price to each performance obligation within the customer arrangement based upon standalone selling price. Revenue on electrolyzer systems and stacks is generally recognized at the point at which transfer of control passes to the customer, which usually occurs upon title transfer at shipment or delivery to the customer location. In certain instances, control of electrolyzer systems transfers to the customer over time, and the related revenue is recognized over time as the performance obligation is satisfied. We recognize revenue over time when contract performance results in the creation of a product for which we do not have an alternative use and the contract includes an enforceable right to payment in an amount that corresponds directly with the value of the performance completed. In these instances, we use an input measure (cost-to-total cost or percentage-of-completion method) of progress to determine the amount of revenue to recognize during each reporting period based on the costs incurred to satisfy the performance obligation.

Payments received from customers are recorded within deferred revenue and customer deposits in the consolidated balance sheets until control is transferred. The related cost of such product and installation is also deferred as a component of deferred cost of revenue in the consolidated balance sheets until control is transferred.

(iii) Sales of cryogenic equipment and other

Revenue from sales of cryogenic equipment represents sales of liquefaction system and other cryogenic equipment such as trailers and mobile storage equipment for the distribution of liquefied hydrogen, oxygen, argon, nitrogen and other cryogenic gases.

The Company uses a variety of information sources in determining standalone selling prices for liquefaction systems and cryogenic equipment. Liquefaction systems are typically sold on a standalone basis and the standalone selling price is the contractual price with the customer. The Company uses an adjusted market assessment approach to determine the standalone selling price of liquefaction systems when sold with other equipment. This includes considering both standalone selling prices of the systems by the Company and available information on competitor pricing on similar products. The determination of standalone selling prices of the Company’s performance obligation requires judgment, including periodic assessment of pricing approaches and available observable evidence in the market. Revenue on liquefaction systems is generally recognized over time. Control transfers to the customer over time, and the related revenue is recognized over time as the performance obligation is satisfied. We recognize revenue over time when contract performance results in the creation of a product for which we do not have an alternative use and the contract includes an enforceable right to payment in an amount that corresponds directly with the value of the performance completed. In these instances, we use an input measure of progress to determine the amount of revenue to recognize during each reporting period based on the costs incurred to satisfy the performance obligation.

Revenue on cryogenic equipment is generally recognized at the point at which transfer of control passes to the customer, which usually occurs upon title transfer at shipment or delivery to the customer location.

Payments received from customers are recorded within deferred revenue and customer deposits in the consolidated balance sheets until control is transferred. The related costs of such product and installation is also deferred as a component of deferred cost of revenue in the consolidated balance sheets until control is transferred.

(b) Services performed on fuel cell systems and related infrastructure

Revenue from services performed on fuel cell systems and related infrastructure represents revenue earned on our service and maintenance contracts and sales of spare parts. The Company uses an adjusted market assessment approach to determine standalone selling prices for services. This approach considers market conditions and constraints while maximizing the use of available observable inputs obtained from a limited number of historical standalone service renewal prices and negotiations with customers. The transaction price allocated to services as discussed above is generally recognized as revenue over time on a straight-line basis over the expected service period, as customers simultaneously receive and consume the benefits of routine, recurring maintenance performed throughout the contract period.

In substantially all of its transactions, the Company sells extended maintenance contracts that generally provide for a five-to-ten-year service period from the date of product installation in exchange for an up-front payment. Services include monitoring, technical support, maintenance and related services. These services are accounted for as a separate performance obligation, and accordingly, revenue generated from these transactions, subject to the proportional allocation of transaction price, is deferred and recognized as revenue over the term of the contract, generally on a straight-line basis. Additionally, the Company may enter into annual service and extended maintenance contracts that are billed monthly. Revenue generated from these transactions is recognized as revenue on a straight-line basis over the term of the contract. Costs are recognized as incurred over the term of the contract. When costs are projected to exceed revenues over the life of the extended maintenance contract, an accrual for loss contracts is recorded. Costs are estimated based upon historical experience and consider the estimated impact of the Company’s cost reduction initiatives, if any. The actual results may differ from these estimates. See “Extended Maintenance Contracts” above.

Extended maintenance contracts generally do not contain customer renewal options. Upon expiration, customers may either negotiate a contract extension or switch to purchasing spare parts and maintaining the fuel cell systems on their own.

(c) Power purchase agreements

Revenue from PPAs primarily represents payments received from customers who make monthly payments to access the Company’s GenKey solution.

Revenue associated with these agreements is recognized on a straight-line basis over the life of the agreements as the customers simultaneously receive and consume the benefits from the Company’s performance of the services. The customers receive services ratably over the contract term.

In conjunction with entering into a PPA with a customer, the Company may enter into a separate transaction with third-party financial institutions in which the Company receives proceeds from the sale/leaseback transactions of the equipment and the sale of future service revenue. The proceeds from the financial institution are allocated between the sale of equipment and the sale of future service revenue based on the relative standalone selling prices of equipment and service. The proceeds allocated to the sale of future services are recognized as finance obligations. The proceeds allocated to the sale of the equipment are evaluated to determine if the transaction meets the criteria for sale/leaseback accounting. To meet the sale/leaseback criteria, control of the equipment must transfer to the financial institution, which requires among other criteria the leaseback to meet the criteria for an operating lease and the Company must not have a right to repurchase the equipment (unless specific criteria are met). These transactions typically meet the criteria for sale/leaseback accounting and accordingly, the Company recognizes revenue on the sale of the equipment and separately recognizes the leaseback obligations.

The Company recognizes an operating lease liability for the equipment leaseback obligation based on the present value of the future payments to the financial institutions that are attributed to the equipment leaseback. The discount rate used to determine the lease liability is the Company’s incremental borrowing rate. The Company also records a right of use asset which is amortized over the term of the leaseback. Rental expense is recognized on a straight-line basis over the life of the leaseback and is included as a cost of power purchase agreements revenue on the consolidated statements of operations.

Certain of the Company’s transactions with financial institutions do not meet the criteria for sale/leaseback accounting and accordingly, no equipment sale is recognized. All proceeds from these transactions are accounted for as finance obligations. The right of use assets related to these transactions are classified as equipment related to the PPAs and fuel delivered to the customers, net in the consolidated balance sheets. The Company uses its transaction-date incremental borrowing rate as the interest rate for its finance obligations that arise from these transactions. No additional adjustments to the incremental borrowing rate have been deemed necessary for the finance obligations that have resulted from the failed sale/leaseback transactions.

In determining whether the sales of fuel cells and other equipment to financial institutions meet the requirements for revenue recognition under sale/leaseback accounting, the Company, as lessee, determines the classification of the lease. The Company estimates certain key inputs to the associated calculations such as: 1) discount rate used to determine the present value of future lease payments, 2) fair value of the fuel cells and equipment, and 3) useful life of the underlying asset(s):

- ASC 842, *Leases (“*ASC 842”), requires a lessee to discount its future lease payments using the interest rate implicit in the lease or, if that rate cannot be readily determined, its incremental borrowing rate. Generally, the Company cannot determine the interest rate implicit in its leases because it does not have access to the lessor’s estimated residual value or the amount of the lessor’s deferred initial direct costs. Therefore, the Company generally uses its incremental borrowing rate to estimate the discount rate for each lease. Adjustments that considered the Company’s actual borrowing rate, inclusive of securitization, as well as borrowing rates for companies of similar credit quality were applied in the determination of the incremental borrowing rate.
- In order for the lease to be classified as an operating lease, the present value of the future lease payments cannot exceed 90% of the fair value of the leased assets. The Company estimates the fair value of the lease assets using the sales prices.
- In order for a lease to be classified as an operating lease, the lease term cannot exceed 75% (major part) of the estimated useful life of the leased asset. The average estimated useful life of the fuel cells is 10 years, and the average estimated useful life of the hydrogen infrastructure is 20 years. These estimated useful lives are compared to the term of each lease to determine the appropriate lease classification.

(d) Fuel delivered to customers and related equipment

Revenue associated with fuel delivered to customers represents the sale of hydrogen to customers that has been purchased by the Company from a third party or generated at our hydrogen production plants. The stand-alone selling price is not estimated because it is sold separately and therefore directly observable.

The Company purchases hydrogen fuel from suppliers in most cases (and sometimes produces hydrogen onsite) and sells to its customers. Revenue and cost of revenue related to this fuel is recorded as dispensed and is included in the respective fuel delivered to customers and related equipment lines on the consolidated statements of operations.

(e) Other revenue

Other revenue includes payments received for technical services that include engineering services, program management services, procurement services and operations, testing and validation services with HyVia. The scope of these services includes mutually agreed upon services as were requested from time to time by HyVia. Other revenue also includes sales of electrolyzer engineering and design services. The scope of these services includes establishing and defining project technical requirements, standards and guidelines as well as assistance in scoping and scheduling of large-scale electrolyzer solutions.

### Impairment

During the fourth quarter of 2024, in connection with the Company’s preparation of its consolidated financial statements, the Company recognized that sales and margin projections were likely not to be met for 2024. Additionally, during the fourth quarter of 2024, in connection with the Company’s preparation of its consolidated financial statements, the Company performed strategic planning, analyzing its various product lines, and it was determined at that time to update the future sales projections and related cash flow projections for certain of those product lines. As a result, there was a reduction in the cash flow projections during the fourth quarter of 2024 to several of the Company’s asset groups indicating that the carrying values of their long-lived assets (including property, plant, and equipment, equipment related to power purchase agreements and fuel delivered to customers, and right of use assets related to operating leases) and finite-lived intangible assets may not be recoverable.

Asset groups are the unit of account for a long-lived asset or assets to be held and used which represent the lowest level for which identifiable cash flows are largely independent of other groups of assets and liabilities. The decrease in cash flow projections for several asset groups was largely attributed to several factors, including the Company failing to meet 2024 sales and margin projections as well as decreased future cash flow projections across certain product lines including stationary, liquefiers and fuel cells for mobility projects related to HyVia. On December 10, 2024, HyVia announced that it entered into legal recovery proceedings recorded by the Commercial Court of Versailles. Additionally, the Company paused certain hydrogen production plant projects during the fourth quarter of 2024. This pause, as well as the decrease in cash flow projections, was primarily due to weakening demand in the global hydrogen market. As a result, the Company tested the recoverability of its long-lived assets and finite-lived intangibles by comparing the carrying values against undiscounted future cash flow projections and determined that an impairment existed.

During the fourth quarter of 2024, a significant amount of property, plant, and equipment were written down to their estimated fair values. The fair value for revenue generating assets was determined using a market approach utilizing prices for similar assets in active markets. The fair value for property, plant, and equipment was determined using a market approach, where available, and where not available, a cost approach. The fair value for equipment related to power purchase agreements and fuel delivered to customers was determined using a discounted cash flow income approach considering estimated market rent. The fair value for right of use assets related to operating leases was determined using a discounted cash flow income approach considering estimated market rent. The fair values for finite-lived intangible assets were determined using the income approach.

The Company recognized impairment charges of $949.3 million during the year ended December 31, 2024 compared to $269.5 million during the year ended December 31, 2023. The increase in impairment was primarily due to impairment charges of $902.2 million resulting from the ASC 360 impairment analysis performed during the fourth quarter of 2024. Of the $902.2 million, $675.5 million was related to property, plant and equipment, $1.6 million was related to equipment related to power purchase agreements and fuel delivered to customers, $145.4 million was related to right of use assets related to operating leases, and $79.7 million was related to finite-lived intangible assets. Additionally, during the fourth quarter of 2024, the Company recorded a $38.3 million impairment charge related to contract assets and other current assets in which the Company determined it would be unable to collect the consideration from a customer contract, impairment charges of $0.3 million related to property, plant and equipment as well as other impairment charges of $0.1 million. Other impairment charges recorded during the year ended December 31, 2024 was $8.4 million, of which $3.0 million related to non-marketable equity securities and $5.4 million related to property, plant and equipment.

The impairment charge of $269.5 million for the year ended December 31, 2023 was primarily related to the impairment of goodwill of $249.5 million as well as $2.4 million related to contract assets, $9.7 million related to other current assets, $3.1 million related to property, plant and equipment, $4.6 million was related to right of use assets related to operating leases and $0.2 million related to equipment related to power purchase agreements and fuel delivered to customers.

To the extent there are further changes in market conditions or the performance of the Company’s long-lived assets, there is a possibility that the Company could incur additional impairment charges in the future.

### Inventory Valuation

Inventories are valued at the lower of cost, determined on a first-in, first-out basis, and net realizable value. All inventory, including spare parts inventory held at service locations, is not relieved until the customer has received the product, at which time the customer obtains control of the goods. We maintain inventory levels adequate for our short-term needs within the next twelve months based upon present levels of production. An allowance for potential non-saleable inventory due to damaged, excess stock or obsolescence is based upon a detailed review of inventory, past history, and expected usage. The Company's estimate of the reserves utilizes certain inputs and involves judgment. The Company evaluates excess and obsolescence and lower of cost or net realizable value inventory reserves on a quarterly basis and, as necessary, reserves inventory based upon a variety of factors, including historical usage, forecasted usage and sales, product obsolescence, anticipated selling price, and anticipated cost to complete to determine product margin and other factors. We review all contracts related to product lines with projected negative margins that are arranged to be sold at a loss in the future as the basis for a lower of cost or net realizable value adjustment.

### Common Stock Warrant Accounting

The Company accounts for common stock warrants as either derivative liabilities or as equity instruments depending on the specific terms of the respective warrant agreements. Common stock warrants that meet certain applicable requirements of ASC Subtopic 815-40, *Derivatives and Hedging – Contracts in Entity’s Own Equity*, and other related guidance, including the ability of the Company to settle the warrants without the issuance of registered shares or the absence of rights of the grantee to require cash settlement, are accounted for as equity instruments. The Company classifies these equity instruments within additional paid-in capital on the consolidated balance sheets.

Common stock warrants accounted for as equity instruments represent the warrants issued to Amazon and Walmart as discussed in Note 19, “Warrant Transaction Agreements”. The Company adopted FASB ASU 2019-08, *Compensation – Stock Compensation* (Topic 718) and *Revenue from Contracts with Customers* (Topic 606), which requires entities to measure and classify share-based payment awards granted to a customer.

In order to calculate warrant charges, the Company used the Black-Scholes pricing model, which required key inputs including volatility and risk-free interest rate and certain unobservable inputs for which there is little or no market data, requiring the Company to develop its own assumptions. The Company estimated the fair value of unvested warrants, considered to be probable of vesting, at the time. Based on that estimated fair value, the Company determined warrant charges, which are recorded as a reduction of revenue in the consolidated statements of operations.

### Recent Accounting Pronouncements

#### Recently Adopted Accounting Pronouncements

In November 2023, ASU 2023-07, *Improvements to Reportable Segment Disclosures*, was issued to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The purpose of the amendments is to enable investors to better understand an entity’s overall performance and assess potential future cash flows. This update was effective for fiscal years beginning after December 15, 2023. Refer to Note 24, “Segment and Geographic Area Reporting”.

#### Recently Issued and Not Yet Adopted Accounting Pronouncements

In November 2024, ASU 2024-04, *Debt with Conversion and Other Options*, was issued to improve the relevance and consistency in application of the induced conversion guidance in Subtopic 470-20. This standard is effective for annual periods beginning after December 15, 2025, including interim periods within those fiscal years. The Company has not yet adopted ASU 2024-04 and is still evaluating the impact of the adoption on its consolidated financial statements.

In November 2024, ASU 2024-03, *Disaggregation of Income Statement Expenses*, was issued which requires disclosure in the notes to the financial statements of specified information about certain costs and expenses. This standard is effective for annual periods beginning after December 15, 2026, and interim periods within annual periods beginning after December 15, 2027, on a prospective basis, with early adoption and retrospective application permitted. The Company has not yet adopted ASU 2024-03 and is still evaluating the impact of the adoption on its consolidated financial statements.

In December 2023, ASU 2023-09, *Improvements to Income Tax Disclosures*, was issued to require public business entities to annually disclose specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. Additionally, annual disclosures on income taxes paid will be required to be further disaggregated by federal, state, and foreign taxes. This update is effective for annual periods beginning after December 15, 2024. The Company has not yet adopted ASU 2023-09 and is still evaluating the impact of the adoption on its consolidated financial statements.

#### Climate Disclosures

In March 2024, the SEC issued Release No. 33-11275, *The Enhancement and Standardization of Climate-Related Disclosures for Investors*, which includes final rules that enhance the transparency of climate-related disclosures and require companies to disclose material climate-related risks; activities to mitigate or adapt to such risks; information about the board of directors' oversight of climate-related risks and management’s role in managing material climate-related risks; and information on any climate-related targets or goals that are material to the registrant's business, results of operations, or financial condition. Companies are also required to disclose the financial statement effects of severe weather events and other natural conditions in the notes to the financial statements, and certain large companies are also required to disclose Scope 1 and Scope 2 greenhouse gas emissions, when material. As a large accelerated filer, most disclosure requirements are effective for the Company beginning with the year ending December 31, 2025. The SEC has been the subject of various lawsuits since adopting these rules. As a result of ongoing litigation, the SEC issued an order in April 2024 to stay the effectiveness of the rules while judicial review is pending. We are continuing to monitor developments associated with these rules and are currently evaluating the impact of these rules on our consolidated financial statements and related disclosures.

## Market risk

As filed, 2,764 characters.

#### Credit Risk

As of December 31, 2024 and 2023, our cash and cash equivalents were maintained with financial institutions in which our current deposits are in excess of insured limits. We believe these institutions have sufficient assets and liquidity to conduct its operations in the ordinary course of business with little or no credit risk to us.

#### Interest Rate Risk

The risk associated with fluctuating interest rates is primarily limited to our cash equivalents. We do not utilize derivative financial instruments, derivative commodity instruments or other market risk sensitive instruments, positions or transactions in any material fashion, except for the 3.75% Notes Capped Call purchased in May 2020 related to the issuance of the 3.75% Convertible Senior Notes. Additionally, the Company purchased a common stock forward in March 2018, which was extended upon issuance of the 3.75% Convertible Senior Notes.

#### Foreign Currency Exchange Rate Risk

Portions of our revenue and operating expenses that are incurred outside the United States are denominated in foreign currencies and are subject to fluctuations due to changes in foreign currency exchange rates, particularly changes in the Euro. Our exposure to changes in foreign currency rates is primarily related to operations of Plug Power Europe, our French subsidiary, as well as Frames, our wholly-owned subsidiary headquartered in the Netherlands. Fluctuations in foreign currency exchange rates may cause us to recognize transaction gains and losses in our statements of operations and comprehensive loss. We also have two joint ventures (1) an investment in AccionaPlug S.L., a joint venture with Acciona, and (2) an investment in SK Plug Hyverse, a joint venture with SK Innovation, as well as an investment in the Clean H2 Infra Fund. Our exposure to foreign currency can give rise to foreign exchange risk resulting from our equity method investments in Acciona and Clean H2 Infra Fund, which all operate in Europe, and SK Plug Hyverse, which operates in Asia. Our AccionaPlug S.L., SK Plug Hyverse and Clean H2 Infra Fund exposure presently is immaterial as commercial activities are in early stages.

#### Inflation Risk

Inflationary factors, such as increases in our cost of goods sold and operating expenses, may adversely affect our operating results. Although we do not believe that inflation has had a material impact on our financial position or results of operations to date, a high rate of inflation in the future may have an adverse effect on our ability to increase our gross margin or reduce our selling and marketing and operating expenses as a percentage of our revenue if the selling prices of our products do not increase as much as or more than our operating expenses.

## Controls and procedures

As filed, 6,882 characters.

### Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer (our principal executive officer) and Chief Financial Officer (our principal financial officer), as appropriate, to allow for timely decisions regarding required disclosure.

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act), as of December 31, 2024. Based on such evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that as of December 31, 2024, our disclosure controls and procedures were effective. We continue to review and document our disclosure controls and procedures, including our internal controls and procedures for financial reporting, and may from time to time make changes aimed at enhancing their effectiveness and to ensure that our systems evolve with our business.

### Management’s Report on Internal Control

Management is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act). The Company’s management, with the participation of our Chief Executive Officer and Chief Financial Officer, under the oversight of our Board, conducted an evaluation of the effectiveness of our internal control over financial reporting as of December 31, 2024, based on the criteria set forth by COSO in Internal Control -- Integrated Framework (2013). Based on this evaluation, management determined that we maintained effective internal control over financial reporting.

The Company’s independent registered public accounting firm, Deloitte & Touche LLP, who audited the consolidated financial statements included in this Annual Report on Form 10-K, has audited the effectiveness of the Company’s internal control over financial reporting as of December 13, 2024. Deloitte & Touche LLP’s report is included in this Annual Report on Form 10-K.

### Changes in Internal Control Over Financial Reporting

There were no changes to the internal control over financial reporting of the Company identified in connection with the Company’s evaluation referred to above that occurred during the fourth quarter ended December 31, 2024 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

### REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and the Board of Directors of Plug Power Inc.

### Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of Plug Power and subsidiaries (the “Company”) as of December 31, 2024, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control — Integrated Framework (2013) issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended December 31, 2024, of the Company and our report dated March 3, 2025, expressed an unqualified opinion on those financial statements and financial statement schedule.

### Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

### Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Deloitte & Touche LLP

Rochester, New York

March 3, 2025

Filed Mar 3, 2025.
Source: SEC EDGAR, the filing index for accession 0001558370-25-002049. Last ingested by Listed: Oct 24, 2026, 15:02 ET. No prices; not investment advice.