Power plant operator Talen Energy and Colstrip’s majority ownership are reportedly $25 million apart on how much should be spent on power plant operations and maintenance in 2022.

The planned shutdown of two Colstrip Power Plant units has begun, signaling the wind down of one of the West's largest coal-fired generators. Colstrip Unit 1 is no longer operating.

HELENA – An environmental organization urged Montana officials Wednesday to protect the state financially and ensure that a co-owner of a coal-fired power plant slated for partial closure pays its ...