Alliant Energy

Alliant Energy Corporation
FormerlyInterstate Energy Corp.
Company typePublic
IndustryUtilities
Founded1917 (1917)
HeadquartersMadison, Wisconsin, U.S.
Products
Revenue US$3.669 billion (Fiscal Year Ended December 31, 2021)
US$0.795 billion (Fiscal Year Ended December 31, 2021)
US$0.674 billion (Fiscal Year Ended December 31, 2021)
Total assets US$18.553 billion (Fiscal Year Ended December 31, 2021)
Total equity US$5.990 billion (Fiscal Year Ended December 31, 2021)
Number of employees
3,375 (2021)
Subsidiaries
  • Interstate Power & Light
  • Wisconsin Power & Light
Websitealliantenergy.com

Alliant Energy Corporation is a public utility holding company headquartered in Madison, Wisconsin, providing power in Iowa and Wisconsin.