Our Company

For more than 100 years, NorthWestern Energy has been committed to delivering safe, reliable and innovative energy solutions.

We serve gas and electric to customers in the western two-thirds of Montana and eastern South Dakota. We also have gas service in Nebraska, and serve electricity to Yellowstone National Park.

We own and operate a diverse generation fleet of wind, water, natural gas and coal-fired resources and the high-voltage electric transmission system and distribution system. We also own and operate natural gas production, transmission and distribution systems.

Enriching Lives Through a Safe, Sustainable Energy Future

A map showing NorthWestern Energy's service territory in Montana, Nebraska and South Dakota.

Enriching Lives Through a Safe, Sustainable Energy Future

NorthWestern Energy has provided reliable and affordable electricity and natural gas to customers in Montana, South Dakota and Nebraska for more than 100 years.

Our Commitment to Sustainability

Sustainability means meeting today’s needs while planning for tomorrow’s as well. It is not just a matter of good environmental practices, being a sustainable enterprise must also incorporate social and governance best practices.

Our vision

Enriching lives through a safe sustainable energy future.

Our mission

Working together to provide safe, reliable and innovative energy solutions that create value for customers, communities, employees, and investors.

Our values

SERVICE: Safety, Excellence, Respect, Value, Integrity, Community, Environment

Our Natural Gas and Electric Service

NorthWestern Energy serves 337 communities in Montana, South Dakota and Yellowstone National Park with safe and reliable electricity. We serve natural gas to 202 communities in Montana, South Dakota and Nebraska.

Our Hydro Facilities

Our carbon-free hydro system is the foundation of our energy generation portfolio in Montana. In 2022, 32% of our electricity for Montana customers came from our hydro facilities.

Giving Back to Our Communities

NorthWestern Energy is committed to being a good corporate citizen of all the communities we serve. In 2022, we gave $2.1 million in charitable donations and community support.

Delivering a Bright Future

Employee Noel Jacobson wears a hard hat and smiles in Power Park.

Delivering a Bright Future

We won't stop working until the future is as bright as it can be.

Where Does Your Energy Come From?

We provide safe, reliable energy through a balanced mix of clean energy and traditional resources.
Looking down on Chamberlain SD from a hill above town.

NorthWestern Energy’s $7.8 million Chamberlain switchyard upgrade will increase service reliability

Date: Apr 27, 2023

TYPE: News

Chamberlain, S.D. – April 27, 2023 – NorthWestern Energy’s $7.8 million new Chamberlain switchyard project will increase capacity to provide reliable service for our customers in the Chamberlain area. NorthWestern Energy is working jointly with East River Electric Cooperative and Central Electric Cooperative. The new switchyard and East River’s new substation are being built on 10 acres located southeast of the City of Chamberlain near the intersection of 249th Street and 345th Avenue.

Work will begin in May and is expected to be completed by the end of the year. Some traffic detours and delays will be required for the safety of the public and crews working on the upgrade.

The new infrastructure will increase reliability and provide uniformity on the transmission system that serves customers in the area through the joint effort of NorthWestern Energy and East River Cooperative.

We appreciate the public’s cooperation and patience when traffic detours or delays are needed for the safety of both the public and crews. Watch for “Utility Work Ahead” signs which alert that crews are working in the area.

More information about the Chamberlain Switchyard upgrade is available online: https://www.northwesternenergy.com/

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NorthWestern Energy - Delivering a Bright Future

NorthWestern Energy provides essential energy infrastructure and valuable services that enrich lives and empower communities while serving as long-term partners to our customers and communities. We work to deliver safe, reliable, and innovative energy solutions that create value for customers, communities, employees, and investors. We do this by providing low-cost and reliable service performed by highly-adaptable and skilled employees. We provide electricity and / or natural gas to approximately 764,200 customers in Montana, South Dakota, Nebraska, and Yellowstone National Park. We have provided service in South Dakota and Nebraska since 1923 and in Montana since 2002.


Media Contacts:

Jo Dee Black