Alliant Energy Q1 2026 Earnings Results and Guidance Reaffirmation

Alliant Energy Corporation reported its first quarter 2026 financial results, with GAAP earnings per share of $0.87 compared to $0.83 in the same period last year. The company's ongoing (non-GAAP) EPS was $0.82 for Q1 2026 versus $0.83 in Q1 2025. Alliant Energy reaffirmed its full-year 2026 ongoing EPS guidance range of $3.36-$3.46 per share, continuing its track record of over a decade of compound annual earnings growth exceeding 6%. The company highlighted strong execution and momentum in data center growth, including signing a new 370 MW electric service agreement in Iowa, bringing total contracted data center demand to approximately 3.4 GW. Key drivers of the Q1 results included higher revenue requirements from increasing rate base at subsidiaries IPL and WPL, investments in generation and energy storage, and higher allowance for funds used during construction, offset by higher financing and depreciation expenses. The company also announced an earnings conference call scheduled for May 1, 2026.