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Alliant Energy Corporation (LNT) is an utilities company in the US local power providers industry, based in Madison, United States, with about 2,948 full-time employees.
It reported revenue of $4.36 billion for fiscal year 2025, and net income of $810.00 million. In Q2 2026 (the quarter ended June 30, 2026) revenue was $971.00 million. Its largest business segment, Utility - IPL, brought in 51% of segment revenue in fiscal year 2025. Its market capitalization was $17.07 billion as of October 9, 2026.
Figures from company filings and market data; latest fiscal year ended December 31, 2025; market data as of October 9, 2026.
Alliant Energy Corporation operates as a utility holding company that provides regulated electric and natural gas services in the United States. It operates through IPL and WPL segments.
Alliant Energy reported $4.36 billion in revenue for fiscal year 2025. In Q2 2026 revenue was $971.00 million.
Utility - IPL, with $2.21 billion or 51% of segment revenue in fiscal year 2025. Next: Utility - WPL (47%) and Other (2%).
$17.07 billion as of October 9, 2026.
Listed companies of a similar size in the same industry (US local power providers) include Eversource Energy (ES), CMS Energy Corporation (CMS), Evergy, Inc. (EVRG), Pinnacle West Capital Corporation (PNW).