NorthWestern Energy announces goal to reduce carbon intensity of Montana generation portfolio by 90% by 2045 BUTTE, Mont.: NorthWestern Energy will file an application for pre-approval with the Montana Public Service Commission to acquire Puget Sound Energy’s 25% interest, 185 megawatts of generation, in Colstrip Unit 4 for one dollar. In addition, NorthWestern Energy is committing to […]