As NorthWestern Energy prepared to take over majority control of the Colstrip power plant, regulators sought to intervene in the company’s plan to assign newly acquired electricity to a subsidiary.

NorthWestern is asking regulators to sign off on their plans for the newly acquired power, but some opponents are claiming ...

NorthWestern Energy has long said that acquiring more Colstrip shares does not require Public Service Commission approval, but the commission disagreed in a federal filing.

HELENA — Talen Energy is pushing Montana lawmakers for a tax break worth millions to keep two units of the coal-fired Colstrip power plant open, with one Republican leader saying Tuesday the units ...

Colstrip power plant co-owner PacifiCorp reported this week that 13 of its 22 coal-fired power plants were uneconomical; Colstrip wasn't among them, but its performance was marginal. The Oregon-based ...

Colstrip Power Plant (Photo by Darrell Ehrlick of the Daily Montanan). NorthWestern Energy has said it had to charge customers an extra $40 million when a plant at Colstrip went down right before a ...

Retrofitting Montana's largest coal-fired power plant to reduce greenhouse gas emissions would cost at least $1.2 billion, but that price tag could be at least partially offset by selling captured ...

COLSTRIP — Some say it was only a matter of time before the 1.6 million people at the other end of Colstrip's 500-kilovolt power lines became aware of this southeast Montana coal town. Those energy ...

BILLINGS – The company that keeps the coal-fired Colstrip power plant running has notified five of its owners that they’ll need a new operator by May 2018, if not sooner. Talen Energy owns a share of ...

The facility, in Colstrip, Mont., used a new E.P.A. system for requesting special waivers from President Trump. By Hiroko Tabuchi The nation’s most polluting coal-burning power plant has asked ...

Nearly 50 coal-fired power plants are now exempt from some federal emission requirements. On that list is a power plant in Colstrip. A decision by President Donald Trump will allow the Colstrip ...

The Colstrip plaintiffs settled with the power plant owners, but the pollution persisted as the ash ponds continued to leak. In 2012, Harbine represented the Montana Environmental Information Center, ...