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

President Donald Trump's administration intends to overturn pollution rules aimed at reducing soot emissions from U.S.

The U.S. could deploy emergency powers to restart closed coal plants and prevent more from closing, Interior Secretary Doug ...

All of that electricity will come from the Colstrip power plant after NorthWestern acquires a larger share of that plant'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 ...

President Donald Trump's administration intends to overturn pollution rules aimed at reducing soot and greenhouse gas ...

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 ...