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 2023, 35.7% 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 2023, we gave nearly $2 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.

NorthWestern Energy upgrading natural gas pipeline infrastructure along Madison Street Bridge

Date: Dec 1, 2023

Missoula, Mont. – Dec. 1, 2023 – NorthWestern Energy is installing an 8-inch natural gas pipeline near the Madison Street Bridge in Missoula using a Horizontal Directional Drill (Bore) construction method. This NorthWestern Energy infrastructure project will increase natural gas capacity in the area and replace an existing natural gas pipeline under the Clark Fork River.

A depth/hydrologic study by a registered professional engineer was completed as part of the permitting process. This study determines the depth required for the pipeline under the riverbed. NorthWestern Energy is boring the pipeline at a depth far exceeding the permitting requirements to ensure safety and environmental compliance.

As with all natural gas pipelines, this is a non-liquid carrying pipeline.

Construction equipment will be located at Jeannette Rankin Park on 600 block of South 5th Street East. Pedestrian traffic will be detoured for the safety of the public and the construction crews.

Construction work will occur from 8 a.m. to 4 p.m. weekdays until about the end of January.

The new pipeline will provide increased service reliability for NorthWestern Energy’s Missoula customers.

For more information, go to NorthWesternEnergy.com/missoulapipeline

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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.