Profile

NorthWestern Corporation owns NorthWestern Energy, a utility company that serves South Dakota, Nebraska, and Montana that is based in Sioux Falls. As of 2019, the company serves approximately 718,000 customers. The company's corporate headquarters are located in Sioux Falls while the headquarters for the South Dakota operations are in Huron, SD. The Montana operations were acquired around 2000 after that state passed legislation allowing the electric utility industry to be 'unbundled'. Out of state investors then immediately acquired the generation assets of Montana Power, leaving that part of the territory vulnerable to high "spot" prices on the energy market . In 2014, NorthWestern purchased the dams that were originally part of Montana Power for $900 Million from the PPL Corporation.