Nisource Inc.: Form 10-Q for the period ended Jun 30, 2026

With respect to customers to be served by Pool Resource Assets, NIPSCO will retain discretion to select and dispatch Pool Resource Assets to meet committed customer demand in a way that maintains reliability and efficiency without direct involvement or approval from specific customers. We believe this model will enable us to allocate generation resources more efficiently and provide us with greater flexibility to serve a broader range of potential customers.

We evaluate potential transactions with Pool Resource Asset customers in the context of existing demand and resources within the pool in order to promote a sustainable alignment between committed customer demand within the pool and capacity available from Pool Resource Assets. For additional information regarding our Pool Resource Asset strategy and the initial Pool Resource Assets expected to serve our existing data center customers, refer to Part I, Item 2, "Management's Discussion and Analysis of Financial Condition and Results of Operations— Executive Summary" in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2026.

As we evaluate data center opportunities, we focus on community, financial, operational, and regulatory factors to support our strategy. We believe this development can enhance Indiana's tax base, diversify employment, and add value for customers and shareholders. Simultaneously, we remain committed to responsibly managing power demand and environmental goals.

In order to perform under any further data center contracts, we expect that we would need to develop or contract for additional generation and transmission assets, which may be significant, and obtain additional financing in connection with such development. For these and other reasons, our ability to successfully execute our data center strategy is subject to a number of risks and uncertainties. Refer to Part I, Item 1A, “Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2025.

Energy Transition: We continue to advance our energy transition strategy, primarily through the continuation and enhancement of existing programs, such as implementing our plan to retire and replace remaining coal-fired electric generation by 2028 with a balanced mix of low- or zero-emission electric generation, ongoing pipe replacement and modernization programs, and deployment of advanced leak detection and repair. We continue to make progress on our electric generation transition, initiated through our 2018 Plan, and we are continually adjusting to the dynamic energy landscape. Before the planned retirement of the R.M. Schahfer coal facility at the end of December 2025, NIPSCO received the first of successive emergency orders under section 202(c) of the Federal Power Act, to continue operating in 90-day increments, currently through September 19, 2026. The orders stated that continued operation of R.M. Schahfer is required to meet an energy emergency across MISO’s North and Central regions. Consistent with the Federal Power Act and the U.S. Department of Energy regulations, the order authorizes NIPSCO to obtain cost recovery pursuant to 16 U.S.C. § 824a(c). For additional information, see Note 9, "Regulatory Matters," and see Part I, Item 1A. "Risk Factors" in our Annual Report on Form 10-K for the fiscal year ended December 31, 2025.

NIPSCO's 2021 Plan calls for a new natural gas peaking facility to replace existing vintage gas peaking facilities at the R.M. Schahfer Generating Station to support system reliability and resiliency, and upgrades to the electric transmission system. Following approval by the IURC in October 2024, the construction of a new 400 MW natural gas peaking generation facility is underway, which is expected to support the planned retirement of the existing vintage gas peaking facilities by the end of 2028. The 2021 Plan affirms the retirement of the Michigan City Generating Station by 2028 and calls for new natural gas peaking facilities. Final retirement dates for these units will be subject to MISO approval.

NIPSCO's 2024 Plan was submitted to the IURC on December 9, 2024. The 2024 Plan maintains the retirement decisions and capacity additions identified in the 2018 and 2021 Integrated Resource Plans and calls for additional generation resources through 2029 to support capacity requirements. The 2024 Plan informs future generation investments required to ensure reliability for NIPSCO’s customers and incorporates factors such as anticipated load growth from data centers and other economic development opportunities, EPA emissions rules, and evolving MISO resource accreditation rules. Given that the 90-day 202(c) emergency order could continue to be issued every 90 days to keep R.M. Schahfer open for the foreseeable future, and given that MISO's resource accreditations for renewables and storage remain uncertain, it will be necessary to evaluate changes to our previously communicated resource timelines and alternative resource decisions. We plan to move as efficiently as possible while maintaining the integrity of our commercial, planning, regulatory, procurement and operational execution processes.

We continue to enhance safety and reduce methane emissions on our gas systems through modernization programs and utilization of advanced leak detection and repair. In addition, we plan to advance other low- or zero-emission energy resources and technologies, such as hydrogen and renewable natural gas.

Quantitative and qualitative disclosures about market risk are reported in Item 2, "Management's Discussion and Analysis of Financial Condition and Results of Operations - Market Risk Disclosures."

Evaluation of Disclosure Controls and Procedures

Our chief executive officer and our chief financial officer are responsible for evaluating the effectiveness of our disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)). Our disclosure controls and procedures are designed to provide reasonable assurance that the information required to be disclosed by us in reports that we file or submit under the Exchange Act is accumulated and communicated to our management, including our chief executive officer and chief financial officer, as appropriate, to allow timely decisions regarding required disclosure and is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC. Based upon that evaluation, our chief executive officer and chief financial officer concluded that, as of the end of the period covered by this report, our disclosure controls and procedures were effective at a reasonable assurance level.

Changes in Internal Controls

There have been no changes in our internal control over financial reporting during the most recently completed quarter covered by this report that have materially affected, are reasonably likely to materially affect, our internal control over financial reporting.

Please refer to the risk factors set forth in Part I, Item 1A of the Annual Report on Form 10-K for the year ended December 31, 2025. There have been no material changes to such risk factors.