Customer Service Contact Information

1-800-ALLIANT (1-800-255-4268)
24 hours a day, seven days a week, 365 days a year

The friendly, knowledgeable professionals at our Customer Service Center can help you with information about your account, including the billing history and past energy usage at your address.

They can also help you transfer utility service, answer questions about your current bill, make a payment arrangement or provide information about our energy efficiency programs.

If English isn’t your primary language, don’t worry – we can provide an interpreter for Spanish and other languages.

You can also use our Contact Us form or e-mail customercare@alliantenergy.com.

And don’t miss our convenient online self-service options!

With Your Account, you can start or stop service, review your current balance and payment history, enroll in payment programs and more – all from the comfort of your home or business.

 
Mailing addresses:

If you misplace the envelope provided with your bill, mail your payment to:

Wisconsin customers:

Alliant Energy
PO Box 3068
Cedar Rapids, IA 52406-3068

Iowa and Minnesota customers:

Alliant Energy
PO Box 3066
Cedar Rapids, IA 52406-3066

Other important phone numbers: