NorthWestern Corporation d/b/a NorthWestern Energy is an investor-owned utility and one of the largest providers of electricity and natural gas in the northwest quadrant of the United States.
We serve approximately 678,200 customers - 406,600 electric and 271,600 natural gas - in Montana, South Dakota and Nebraska.
Classified as a ''mid-sized'' utility by most industry standards, our service territory size is one of the largest in the country.
The foundation of NorthWestern's energy business dates back to 1923, with the start of the utility operations in a few communities in South Dakota and Nebraska.
Our electric system serves 297 communities and surrounding rural areas covering two-thirds of Montana, eastern South Dakota, and Yellowstone National Park in Wyoming.
Our natural gas system serves 169 communities and surrounding rural areas in Montana, South Dakota and central Nebraska.
NorthWestern Energy has approximately 1,493 full-time employees.
Our corporate headquarters is in Sioux Falls, S.D., with operational headquarters in Butte, Mont., and Huron, S.D.
We are listed on the New York Stock Exchange under the ticker symbol NWE.