Alliant Energy Corp. Q2 2026 Filing Summary
Business Context and Reporting Period
This Form 10-Q covers the quarterly period ended June 30, 2026, for Alliant Energy Corporation (Alliant Energy) and its utility subsidiaries, Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL). The company operates regulated electric and gas utilities in Iowa and Wisconsin. The filing includes unaudited condensed consolidated financial statements for the three and six months ended June 30, 2026, compared to the same periods in 2025.
Key Financial Metrics (Six Months Ended June 30, 2026)
| Metric | 2026 (in millions) | 2025 (in millions) |
|---|---|---|
| Total Revenues | $2,155 | $2,088 |
| Operating Income | $434 | $479 |
| Net Income (Alliant Energy) | $394 | $387 |
| Diluted EPS | $1.52 | $1.50 |
| Operating Cash Flow | $481 | $492 |
| Capital Expenditures (Utility) | $913 | $976 |
| Total Debt (Long-term + Current) | $11,010 | $12,028 |
| Cash & Equivalents | $25 | $329 |
Note: Operating margin for the six months ended June 30, 2026, was approximately 20.1% ($434M / $2,155M), down from 22.9% in the prior year period.
Material Changes vs. Prior Period
- Revenue Growth: Total revenues increased by $67 million (3.2%) year-over-year, driven by higher revenue requirements from capital investments and increased gas utility revenues ($37M increase), partially offset by lower wholesale electric sales.
- Operating Income Decline: Operating income decreased by $45 million (9.4%) primarily due to higher other operation and maintenance expenses ($63M increase), higher depreciation and amortization ($22M increase), and unfavorable weather impacts on sales volumes.
- Net Income Increase: Despite lower operating income, net income increased by $7 million. This was largely due to a significant increase in equity income from unconsolidated investments ($42M increase) and a favorable change in income tax benefits.
- Liquidity Shift: Cash and cash equivalents decreased significantly from $556 million at year-end 2025 to $25 million at June 30, 2026, due to high capital expenditures and debt repayments.
- Debt Reduction: Long-term debt decreased by approximately $1 billion, driven by the retirement of $575 million in convertible senior notes and other debt repayments.
Outlook, Risks, and Management Commentary
- Capital Projects: Management highlighted significant progress on generation and storage projects, including the completion of advanced gas path projects at Neenah and Sheboygan Falls. New applications were filed for a 720 MW gas-fired unit in Iowa and a 1,200 MW unit (Riverhawk Energy Center).
- Large Load Growth: IPL entered into a service agreement for a data center with ~370 MW peak demand. WPL received approval for an individual customer rate for a data center, prompting the PSCW to require a new large load tariff.
- Regulatory & Environmental: The company is evaluating the impact of proposed EPA rules on Coal Combustion Residuals (CCR) and Effluent Limitation Guidelines (ELGs). A new Wisconsin law requires capacity costs to be included in fuel cost plans starting in 2027.
- Risks: Key risks include the ability to recover costs through rates, supply chain disruptions affecting construction, cybersecurity threats, and the impact of weather on sales volumes. The company also noted uncertainty regarding the recovery of tariff-related costs on imported equipment.
- Dividends: Common stock dividends paid were $274 million for the six-month period, reflecting a quarterly dividend of $0.535 per share.
Investor Verification Checklist
- Weather Normalization: Verify the specific dollar impact of temperature variances on operating income, as the filing notes a $18 million negative impact for the six-month period.
- Debt Maturity Profile: Review the specific maturity dates of the remaining long-term debt, given the significant reduction in total debt and the retirement of the 2026 convertible notes.
- Capital Expenditure Execution: Monitor the in-service dates and cost targets for the newly approved generation projects (Riverhawk, Linn County gas unit) to ensure they align with regulatory cost caps.
- Large Load Tariff: Track the filing and approval of WPL's new large load tariff, as this will impact future rate structures for high-demand customers.
- Equity Investment Volatility: Assess the sustainability of the $42 million increase in equity income from unconsolidated investments, which was a primary driver of net income growth.