The power plants in Colstrip have been providing power to the American West since the 1970s, but coal-powered electricity is ...

The leader of an environmental advocacy organization in Montana says she strongly disputes a claim by NorthWestern Energy that bringing electricity-hungry data centers to Montana will be beneficial.

Get any of our free daily email newsletters — news headlines, opinion, e-edition, obituaries and more. MISSOULA — NorthWestern Energy has responded to an inquiry from Montana regulatory ...