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 begins construction in July on $84 million, 58-megawatt natural gas-fired generation plant near Huron, SD

Date: May 12, 2020

TYPE: News

Category: Investors

Sioux Falls, SD. – May 12, 2020 – Work will begin in July on an $84 million, 58-megawatt natural gas-fired plant near Huron, S.D. This flexible-capacity resource will provide energy as needed 24/7 for NorthWestern Energy’s South Dakota customers.

Reciprocating internal combustion engine technology will replace the existing natural gas/diesel fuel-fired combustion turbines at the Huron Generating Station. The reciprocating engines are more efficient and use selective catalytic reduction and oxidation catalyst to control emissions. The plant design also includes several mitigation measures to reduce noise from the plant during operation.

Caterpillar, Inc. was selected in April as the reciprocating engine supplier and Fagen, Inc. of Granite Falls, Minn. was selected as the Engineering, Procurement, Construction contractor.

Caterpillar is a global leader in reciprocating engine technology. The CAT engines are highly reliable and efficient with low emissions. The selected engines are capable of rapid ramping and multiple daily starts and stops. They have a proven track record of providing peaking power, baseload power and regulating power, which is required for integration of intermittent renewable resources.

“Caterpillar’s competitively priced equipment has a successful history of quality and performance and will be a generation asset meeting the energy needs of our South Dakota customers for decades,” said Jim Williams, NorthWestern Energy Director of Thermal & Wind Generation. “Fagen has a solid reputation as a superior EPC contractor. We are pleased to partner with both of these companies.”

The new CAT engines will replace the existing units at the Huron Generating Station, one of which was installed in the early 1960s. When complete, the new plant will have a smaller footprint and a larger setback than the existing plant. Commercial operation of the new plant is scheduled for the end of 2021.

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About NorthWestern Energy (Nasdaq: NWE)

NorthWestern provides electricity and / or natural gas to approximately 743,000 customers in Montana, South Dakota, and Nebraska. We have generated and distributed electricity in South Dakota and distributed natural gas in South Dakota and Nebraska since 1923 and have generated and distributed electricity and distributed natural gas in Montana since 2002. More information on NorthWestern is available on the company’s website at www.northwesternenergy.com.

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