Payment Options As a NorthWestern Energy customer, you have several payment options. We’re certain one will be convenient for you. EZ Pay Our EZ Pay program is designed to save you time by having your NorthWestern Energy monthly payment automatically withdrawn from your checking or savings account on the due date of your bill. You will still receive a monthly bill statement and have time to review it, but you will not have to write a check and mail it. And best of all, it's FREE. Two Ways to Sign Up: Sign-up through My Energy Account Print out the Automatic Enrollment Form and return it to us by mail or fax using the contact information listed on the form. Change or cancel EZ Pay: Contact us to make changes to your EZ Pay. AutoPay by Credit/Debit Card This AutoPay program is designed to save you time by having your NorthWestern Energy monthly payment automatically charged to your credit/debit card (processing fee applies) on the due date of your bill. You will still receive a monthly bill statement and have time to review it, but you will not have to write a check and mail it. Sign-up through My Energy Account . Change or Cancel Debit/Credit Card Autopay AutoPay by Credit/Debit Card can be managed through your My Energy Account. Pay Online Make a payment directly from your checking or savings account, or if you prefer, pay using your Credit/Debit Card (Visa, MasterCard, AMEX or Discover Card), through our association with Paymentus Corporation. Pay Online Pay by Phone Checking, Saving or Credit/Debit cards Pay By Text Paying your energy bill can be as simple as sending a text when you sign up for our Pay by Text payment option! With Pay by Text, you are alerted when you have a new bill. Simply reply to the text to pay your bill. To sign up for Pay by Text, log into My Energy Account and from the Payments menu choose Pay by Text! It’s that easy! Pay by Mail NorthWestern Energy 11 E Park St Butte, MT 59701-9394 Pay in Person Through our association with Western Union® you can pay in person at a convenient Convenience Pay location or in person at one of our local offices in Montana, Nebraska or South Dakota. Return to account login Start Service Need one time access? Pay bill as a Guest Mobile User? Install Shortcut on Your Phone Select to install an icon on your iPhone.