An estimated $20 million in needed repairs to Colstrip Power Plant Unit 4 has raised concerns about the life of the generator, according to regulatory filings in Washington state. The superheated ...

The Montana Public Service Commission on Tuesday voted 3-2 to stop NorthWestern Energy from passing on costs related to a 2013 outage at the Colstrip power plant to consumers through a rate increase.

The power plant’s other owners are monopoly utilities with captive customers obligated to pay above market prices in exchange for reliability. A Texas company with no other power plants within 1,500 ...

One Colstrip owner is being encouraged to cut the cord on its many coal-fired power plants and go with renewables, mostly for the price. PacifiCorp, which holds the smallest ownership share in ...