Payment options

We offer several convenient electronic payment methods, but you can also pay your bill through the mail.

The return envelope we provide is bar-coded for faster delivery, so please do not use this envelope for other correspondence. If you misplace the return envelope, mail your check AND bill stub to:

Wisconsin customers

Alliant Energy
P.O. Box 3062
Cedar Rapids, IA 52406-3062

Iowa customers

Alliant Energy
P.O. Box 3060
Cedar Rapids, IA 52406-3060

Please do not send cash or any correspondence in the payment envelope. Alliant Energy cannot be held liable for missing cash payments or crediting to your account record.

To make sure your check is processed quickly and accurately, do not staple anything to the payment stub or check. Please include your account number with your payment.

If you need to know how much you owe or when we received your payment, you can view your account information online or with our mobile app using My Account. It takes just a few minutes to enroll, and you’ll have access to your current balance and 36 months of payment and bill history.

If you cannot pay your bill in full by the due date, enroll in My Account to set up a payment arrangement or contact us at 1-800-255-4268.

Where is my nearest Western Union® Convenience Pay® agent outlet?

Agent outlets are conveniently located in many stores. To find one near you, use Western Union’s Convenience Pay® location look-up tool or call them at 1-800-551-8001.

Is there a fee to use this service?

The fee to process a transaction is just $1.25. The transaction fee is charged by Western Union® Convenience Pay® to cover fees and costs associated with handling payments up to $2,500.

How does Convenience Pay® work?

Take your bill and cash, check or money order to a nearby participating Western Union® Convenience Pay® agent location. You will receive a transaction receipt once your transaction has been completed.

Western Union® Convenience Pay® payments are posted to your account within two business days. If you are paying due to a disconnect notice, call our Customer Service Center at 1-800-ALLIANT (800-255-4268) with your Western Union® Convenience Pay® confirmation number so we can note it on your account.

Alliant Energy is part of the Speedpay network. If you’re used to paying bills with Speedpay, you can add Alliant Energy as a biller. Fees apply for Iowa customers.

Note: Why pay fees when you don’t have to? There’s no fees when you use Alliant Energy’s instant online payment or My Account.

Speedpay (third-party vendor)
Free!
One-time or recurring payments	X
View payment history	X
Save card for future payments	X
Set up a payment arrangement or extension

To use Speedpay over the phone: 
Call 1-877-429-4126 and follow the voice instructions. 

To use Speedpay online:
Use your Alliant Energy account number to log in to the online Speedpay system. 

Fees

Speedpay charges a convenience fee for each transaction. Fees vary by state. Iowa customers will pay:

• $2.99 per $600 transaction for residential customers

• $11.50 per $2,000 transaction for business customers*
  * Not all business customers may be eligible. Please contact your Key Account Manager for eligibility requirements.

Before you make a Speedpay payment, please note:

Speedpay payments are posted to your account within three business days. If you are paying due to a disconnect notice, call our Customer Service Center at 1-800-ALLIANT (800-255-4268) with your Speedpay confirmation number so we can note it on your account.

Speedpay does NOT allow duplicate payment amounts from the same bank account or card number on the same day.

Customers are limited to no more than three payments via Speedpay in any consecutive five-day period and a maximum of five payments in any consecutive 30-day period.

Your financial institution may offer a third-party bill pay service. Many financial institutions offer electronic payment services to their customers. Check with your bank for more details.

Pay your bill over the phone with a bank account. Call our Customer Service Center at 1-800-ALLIANT (800-255-4268) and say “Make a payment” to avoid waiting on hold.