NorthWestern Energy Corporation

215 E. 5th St.

Webster, SD 57274

(800) 245-6977

gold-level - Webster Chamber Investor

NorthWestern Corporation is one of the largest providers of electricity and natural gas in the Upper Midwest and Northwest, serving approximately 608,000 customers in Montana, South Dakota and Nebraska. Our corporate headquarters is in Sioux Falls, S.D. NorthWestern Energy is a major, regional provider of electricity, natural gas and related services to approximately 608,000 customers in Montana, South Dakota and Nebraska. 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. Today, our electric system has more than 29,000 miles of transmission and distribution lines and associated facilities serving 299 communities and surrounding rural areas covering two-thirds of Montana, eastern South Dakota and Yellowstone National Park in Wyoming. Our natural gas system includes approximately 7,600 miles of transmission and distribution pipelines and storage facilities that serve 172 communities and surrounding rural areas in Montana, South Dakota and central Nebraska. NorthWestern Energy has approximately 1,300 full-time employees.