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For more than 100 years, NorthWestern Energy has delivered the energy and exceptional service that our customers and communities count on – safely, efficiently and responsibly.

We own and operate natural gas production, transmission and distribution systems serving 279,200 customers.  We own and operate a diverse generation fleet of wind, water, natural gas and coal-fired resources* and the high-voltage transmission system and distribution system that reliably delivers responsibly-produced electricity to more than 421,800 customers daily. 

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:

Our Operations:

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Our regulated electricity utility business in Montana includes generation, transmission and distribution.  Our service territory covers approximately 107,600 square miles or about 73% of Montana’s land area. Our South Dakota electric utility business operates as a vertically integrated generation transmission and distribution utility.  We have the exclusive right to serve an area in South Dakota comprised of 25 counties.

Our regulated natural gas utility business in Montana includes production, storage transmission and distribution.  Since 2010, we have acquired gas production and gathering system assets as part of an overall strategy to provide rate stability and customer value through the addition of regulated assets that are not subject to market forces. We provide natural gas to 60 South Dakota communities and also transport natural gas for eight gas-marketing firms and three large end-user accounts.  In Nebraska we provide natural gas service to four communities and transport natural gas for three gas-marketing firms and one end-user account. 

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