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Our Service Territory

We provide electric and natural gas service to more than one million customers in our utility service territory.

Find a list of communities we serve or contact one of the state regulatory agencies that oversee our operations:

Alliant Energy's service territory graphic imageIowa:
Iowa Utilities Board
1375 E. Court Avenue, Room 69
Des Moines, Iowa 50319-0069

Public Service Commission of Wisconsin
610 North Whitney Way
P.O. Box 7854
Madison, WI 53707-7854

For more information about our service territory, use our online database to view profiles of more than 300 Alliant Energy communities, with details on demographics, labor force, education, transportation and more.