Clean Air Act

The president of an oil processing company whose Eastern Montana plant exploded in 2012 was sentenced to 18 months in federal prison.The Billings Gazette…

The Montana Supreme Court heard arguments Wednesday over how the Public Service Commission should set the rates NorthWestern Energy has to pay for power…

Units 1 and 2 of the coal-fired power plant in Colstrip will permanently close at the end of this year. Plant operator Talen Energy made that announcement…

Lawmakers in Helena are starting to debate whether the state could borrow up to $500 million to buy the coal-fired power plant in Colstrip. The future of…

A new study funded in part by the coal industry says shutting down of Colstrip’s two newer, larger coal-fired electricity generators in the next decade…

The speaker of Montana’s House is hoping to extend the life of the coal-fired power plants in Colstrip by offering their operators loans to keep them…

The U.S. Environmental Protection Agency says Billings is now in compliance with federal air pollution standards. Gov. Steve Bullock says this is the…

A federal appeals court on Tuesday struck down a rule meant to reduce haze from coal burned in Montana.Environmentalists were critical that rule wasn’t…