Colstrip Power Plant

NorthWestern Energy for the second time in four years says it will adopt Puget Sound Energy’s share in the Colstrip plant as the Washington utility moves away from coal generation.

NorthWestern Energy announced this month that it’s acquiring co-owner Avista Utilities’ stake in the Colstrip coal-fired power plant. Colstrip's mayor says it's a relief, but environmentalists say it's a step in the wrong direction.

The owners of the Colstrip coal-fired power plant last week submitted a study to the state analyzing what it would cost to provide the nearby community with drinking water if the plant closes.

The court ruled that federal regulators who authorized the expansion of the Rosebud Mine near Colstrip failed to take a “hard look” at the environmental impacts in the same way they did the economic benefits.

The operator of the coal-fired power plant in Colstrip and Montana state regulators have finalized a plan to clean up pollution at the plant’s two retired units.

Four out-of-state owners of the coal-fired power plant in Colstrip received temporary protection Wednesday from a Montana law the companies say inhibits them from making plans to close the plant’s two remaining units.

The Pacific Northwest co-owners of the Colstrip coal-fired power plant are seeking protection from a new Montana law they say hurts their chances at negotiating their business dealings

A Washington State electric utility is contracting to buy energy from a wind farm in southeast Montana scheduled to be built this summer.

The majority owners of the Colstrip coal-fired power plant are suing Montana’s attorney general over new laws they say unconstitutionally affect private business.

The owners of the Colstrip coal-fired power plant are now required to study how the city of Colstrip will keep its supply of drinking water if the plant ever shuts down.