NorthWestern Energy delivers safe and reliable electric and natural gas service to homes and businesses across Montana, South Dakota, and Nebraska. Monthly bills include usage charges and a clear due date printed on each statement. Timely payment prevents late fees and service interruptions.
- For the most current details on accounts and billing, visit the official Billing & Payment page at https://northwesternenergy.com/billing-payment.
- Customers can also make secure one-time payments directly through the official Guest Pay portal at https://ipn2.paymentus.com/rotp/nwee.
Guest Pay / One-Time Payment Option
NorthWestern Energy offers a convenient one-time payment (guest pay) option through its official Paymentus portal—no account registration or login required. This feature is ideal for occasional users or those who prefer to pay manually without creating a recurring profile.
To complete a guest payment:
- Visit the portal at https://ipn2.paymentus.com/rotp/nwee.
- Enter your NorthWestern Energy account number.
- Provide payment details using a checking or savings account (free) or credit/debit card ($2.75 processing fee).
- Review the amount and submit for immediate confirmation.
Payments are processed securely and typically post the same or next business day. You will receive an on-screen receipt. The portal is fully secure and mobile-friendly.
Online Account Management with My Energy Account
Create a free My Energy Account at https://myaccount.northwesternenergy.com/ for full 24/7 access. Once registered, you can view current and past bills, track usage history, enroll in paperless e-billing, receive alerts, and manage your NorthWestern Energy account from any device. The portal supports both one-time guest payments and recurring options.
Automatic Payments (AutoPay)
Enroll in free AutoPay through your My Energy Account to have payments automatically withdrawn from your checking or savings account or charged to your credit/debit card on the due date each month. This eliminates missed payments and late fees. You can modify or cancel AutoPay anytime through the portal. Detailed enrollment instructions are available on the official Auto Pay page.
Pay by Phone
Pay by phone 24/7 by calling 833-970-2262 (English) or 833-970-2263 (Spanish). Have your account number ready. The automated system accepts checking/savings or credit/debit card payments and provides immediate confirmation. For billing questions or assistance, the same numbers connect you to representatives during business hours.
Mail Payments
Mail your payment stub with a check or money order (payable to NorthWestern Energy) to: NorthWestern Energy 11 E. Park St. Butte, MT 59701-1711
Include your full account number on the check. Do not send cash. Allow 5–7 business days for mail delivery and processing. This option is completely fee-free.
In-Person Payments at Walk-In Offices
Pay in person at any NorthWestern Energy walk-in customer service center during regular business hours. Bring your statement for faster processing. Key locations include:
- Butte General Office – 11 E. Park St., Butte, MT 59701-1711
- Great Falls Downtown Office – 1 1st Ave South, Great Falls, MT 59401
- Billings Division Office – 1944 Monad Road, Billings, MT 59102
- Missoula Division Office – 1903 S. Russell St., Missoula, MT 59806
Additional offices serve communities across Montana, South Dakota, and Nebraska. Use the official Service & Payment Locations page to find the nearest office and current hours. Staff can assist with billing questions and payment arrangements.
Contact Customer Service
Reach NorthWestern Energy customer service at 888-467-2669 (Montana) or 800-245-6977 (South Dakota/Nebraska) during business hours for billing inquiries, payment arrangements, service starts/stops, or portal assistance. For outages or emergencies, call the 24/7 line listed on your bill or on the official website. The corporate headquarters is located at 11 E. Park St., Butte, MT 59701-1711.
Frequently Asked Questions
Can I pay my NorthWestern Energy bill online without creating an account? Yes. The official one-time payment portal at https://ipn2.paymentus.com/rotp/nwee allows guest payments using only your account number—no registration required.
What payment methods does NorthWestern Energy accept? The guest pay portal accepts checking/savings accounts (free) and credit/debit cards ($2.75 fee). Phone and AutoPay accept the same methods. Mail accepts checks or money orders.
Are there convenience fees for NorthWestern Energy payments? Yes. A $2.75 processing fee applies to credit/debit card payments made online, by text, or by phone. Checking/savings, AutoPay, and mail/check payments are fee-free.
Where do I mail my NorthWestern Energy payment? NorthWestern Energy, 11 E. Park St., Butte, MT 59701-1711. Always include your account number on the check.
What are the in-person payment options? Payments accepted at multiple walk-in offices across Montana, South Dakota, and Nebraska during regular business hours. Find the nearest location on the official Service & Payment Locations page.
How do I set up AutoPay for my NorthWestern Energy bill? Log into your free My Energy Account and enroll in AutoPay. It is free and deducts automatically on the due date.
What services does NorthWestern Energy provide? Safe and reliable electric and natural gas service to customers in Montana, South Dakota, and Nebraska.
How do I get help with payment arrangements or billing issues? Call 888-467-2669 (MT) or 800-245-6977 (SD/NE) during business hours or use My Energy Account. Payment arrangements are available for qualifying customers.
