Alliant Energy provides electric and natural gas service to customers in Wisconsin and Iowa. Monthly bills include usage charges with a clear due date, and timely payment prevents late fees or service interruptions.
- For the most current payment options, visit the official Payment Options page at https://www.alliantenergy.com/account-and-billing/payment-options where you can review every verified method in detail.
- You can also make a quick one-time payment directly through the official guest payment portal at https://myaccount.alliantenergy.com/Portal/#/MakePayment without needing a full account setup.
One-Time Payment (Guest Pay)
Alliant Energy offers a convenient guest pay option for one-time payments without requiring a full My Account registration. This quick-pay feature lets you settle your current bill securely using your account number.
To complete a one-time payment:
- Go to the official guest payment portal.
- Enter your Alliant Energy account number from your statement.
- Choose credit/debit card or bank account (e-check).
- Review the total (including any convenience fee) and submit.
Payments are processed promptly with confirmation provided. This method is ideal for occasional users or those preferring manual payments.
Online Account Portal (My Account)
Access the full My Account portal at https://myaccount.alliantenergy.com/ to view current and past bills, make payments, analyze usage, sign up for paperless billing, and manage your account 24/7. The portal is secure and mobile-friendly.
Automatic Payments
Enroll in Automatic Payment through the My Account portal after signing in. This free service automatically deducts your full billed amount from your bank account or card on the due date each month. You receive an advance statement for review. Modify or cancel Automatic Payment anytime in the portal settings.
Pay by Phone
Pay your Alliant Energy bill by phone 24/7 using the automated system. Call 1-800-ALLIANT (800-255-4268) and say “Pay my bill” when prompted. Have your account number ready. Credit/debit card or bank account payments are accepted with convenience fees displayed before confirmation.
Mail Payments
Mail your payment with a check or money order payable to Alliant Energy. Include your account number on the check.
- 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
Mail payments incur no convenience fees but allow 5–7 business days for delivery and processing.
In-Person Payments & Locations
Alliant Energy does not maintain public walk-in counters for bill payments. All payments are handled online, by phone, or by mail. For special arrangements, contact customer service.
Contact Customer Service
For billing inquiries, payment arrangements, or portal support, call 1-800-ALLIANT (800-255-4268) Monday–Friday, 7:00 AM–7:00 PM. Additional support is available through My Account or the website.
Frequently Asked Questions
Does Alliant Energy offer one-time guest payments? Yes. Quick one-time payments are available through the official guest payment portal without full account registration.
What payment methods are accepted? Online portal and phone accept credit/debit cards and bank account (e-check). Mail accepts checks and money orders.
Are convenience fees charged? Yes. Fees apply to credit/debit card transactions and are displayed before confirmation.
What is the mailing address? Wisconsin customers use P.O. Box 3062; Iowa customers use P.O. Box 3060, both in Cedar Rapids, IA 52406.
How do I enroll in Automatic Payment? Sign into My Account and follow the Automatic Payment enrollment steps.
What services does Alliant Energy provide? Electric and natural gas service to customers in Wisconsin and Iowa.
How do I report an outage or emergency? Call 1-800-ALLIANT or use the outage tools in My Account.
