NiSource Inc. 2025 Annual Report (10-K) Summary
Business Context and Reporting Period
This report covers the fiscal year ended December 31, 2025. NiSource Inc. is an energy holding company operating fully regulated natural gas and electric utilities across six states, serving approximately 3.8 million customers. The company operates through two primary reportable segments: Columbia Operations (gas distribution in Ohio, Pennsylvania, Virginia, Kentucky, and Maryland) and NIPSCO Operations (gas and electric in northern Indiana). A major strategic development in 2025 was the execution of the ADS Contract with Amazon Data Services (ADS), a subsidiary of Amazon.com, Inc., to provide electricity to data centers, alongside the creation of the GenCo affiliate to develop generation assets for this purpose.
Key Financial Metrics
| Metric (in millions, except per share) | 2025 | 2024 |
|---|---|---|
| Operating Revenues | $6,642.2 | $5,455.1 |
| Operating Income | $1,835.3 | $1,455.5 |
| Net Income | $1,012.6 | $844.7 |
| Net Income Attributable to NiSource | $929.5 | $760.4 |
| Diluted Earnings Per Share | $1.95 | $1.62 |
| Operating Cash Flow | $2,362.3 | $1,781.5 |
| Total Capital Expenditures | $4,051.6 | $3,692.5 |
| Total Consolidated Indebtedness | $16,213.5 | $13,355.7 |
| Debt-to-Capitalization Ratio | 51.0% | N/A |
Material Changes vs. Prior Period
- Revenue Growth: Operating revenues increased by $1,187.1 million (21.8%) compared to 2024. This was driven by higher rates from successful regulatory proceedings, colder weather in the gas segment, and increased customer usage in the electric segment.
- Profitability: Net income attributable to NiSource rose by $169.1 million (22.2%). The increase was primarily due to higher revenues net of energy costs, offset partially by higher depreciation and interest expenses.
- Capital Investment: Capital expenditures increased to $4.05 billion, reflecting significant investments in infrastructure modernization, safety programs, and generation transition assets. This includes $373.8 million in advanced deposits for data center generation assets.
- Debt Issuance: The company issued approximately $3.35 billion in long-term debt during 2025, including senior notes and junior subordinated notes, to fund capital projects and refinance maturing debt.
- Strategic Transactions: In October 2025, NiSource issued a 19.9% equity interest in Generation Holdings II (GenCo) to affiliates of Blackstone for $35.2 million, with Blackstone committing up to $1.325 billion in additional capital over seven years.
Guidance, Outlook, and Risks
- Data Center Strategy: The ADS Contract involves constructing up to 3,000 MW of dispatchable generation (including two 1,300 MW CCGTs and 400 MW of battery storage) with an estimated cost of $7 billion. Commercial operation is expected between 2028 and 2032. Management expects this to yield a return greater than traditional electric operations, contingent on execution and financing.
- Capital Outlook: NiSource forecasts total capital investments of approximately $21.0 billion for the 2026-2030 period for its base business, plus an additional $7.0 billion for the ADS Contract assets.
- Energy Transition: The company continues to retire coal generation, though the R.M. Schahfer coal facility was ordered by the U.S. Secretary of Energy to remain operational for 90 days (through March 2026) due to an energy emergency. The Michigan City coal facility remains scheduled for retirement by the end of 2028.
- Key Risks:
- Construction and Financing: Risks related to cost overruns, delays, and the ability to secure significant additional financing for the $7 billion ADS project.
- Regulatory: Uncertainty regarding the recovery of costs and the rate of return on investments, particularly for the new data center assets which are subject to a different regulatory framework than traditional utility operations.
- Customer Concentration: ADS represents a significant customer concentration risk; the contract includes termination options and capacity reduction clauses that could impact revenue projections.
- Interest Rates: Rising interest rates could increase borrowing costs and impact the cost of capital for future projects.
Investor Verification Checklist
- ADS Contract Approval: Verify the status of the Indiana Utility Regulatory Commission (IURC) approval for the ADS Contract and the related GenCo Power Purchase Agreement (PPA), as commercial terms are subject to regulatory oversight.
- Coal Retirement Timeline: Monitor the status of the R.M. Schahfer coal facility and the potential for extended federal emergency orders that could delay the planned retirement and impact the energy transition strategy.
- Debt Covenants: Confirm compliance with the debt-to-capitalization ratio covenant (currently 51.0% vs. 70% limit) as significant new debt is incurred for data center construction.
- Construction Progress: Track the progress and cost management of the $7 billion Contract Assets (generation and transmission) to ensure they meet the milestones required to avoid liquidated damages under the ADS Contract.
- Regulatory Rate Cases: Review the outcomes of pending rate cases in Columbia jurisdictions and NIPSCO Electric to ensure expected revenue increases are realized.