NorthWestern Energy

NorthWestern Energy is a major utility provider serving approximately 668,300 customers across Montana, South Dakota, and Nebraska with electricity and natural gas. Founded in 1923, the company operates one of the largest service territories in the U.S., covering 297 communities for electric and 169 for natural gas. NorthWestern Energy employs around 1,400 people and is headquartered in Sioux Falls, South Dakota.