Important Message  Due to a system maintenance scheduled to begin at 6pm on Thursday, November 14th, our Contact Centers will be staffed for emergency purposes only on Friday, November 15th and our Walk-in Offices will be closed on Friday, November 15th. Normal business hours will resume on Monday, November 18th. Access to Online Customer Care services will be unavailable during this system maintenance.
Contact Us
Montana (888) 467-2669
South Dakota / Nebraska (800) 245-6977

Customer Service

Residential or Business Customer Service, weekdays 7 am - 6 pm

(888) 467-2669
South Dakota / Nebraska
(800) 245-6977

Bill Payment Address

NorthWestern Energy
11 E. Park St.
Butte, MT 59701-1711

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Please do not use this form to report emergencies.

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