NorthWestern Energy had to buy more expensive power during a cold snap, costing ratepayers, and Montana's Public Service Commission wants to know why.

The country's dirtiest coal plants would be among the biggest beneficiaries from a rollback of the soot limits. They include the Colstrip power plant in Montana, which the EPA says is the nation's ...

The Trump administration plans to overturn pollution rules that seek to reduce soot emissions from U.S. coal-fired power plants in a move that ...

(Reuters) -President Donald Trump's administration intends to overturn pollution rules aimed at reducing soot and greenhouse gas emissions from U.S. coal-fired power plants in a move intended to ...

All of that electricity will come from the Colstrip power plant after NorthWestern acquires a larger share of that plant's generating capacity in 2026. NorthWestern Energy has told the Montana ...

The idea of floating nuclear plants isn't new. Reactors have been installed in submarines and ships since the USS Nautilus in 1954 and the first floating power plant dates back to 1967. The idea ...