Today Tri-State announced the retirement of its remaining New Mexico coal-fired power plant and its remaining Colorado coal plants and coal mine.

Several Colorado members of not-for-profit cooperative power supplier Tri-State Generation and Transmission Association expressed support today.

Tri-State Generation and Transmission Association announced today that it will donate $60,000 to the Yampa River Fund over the next three years.

Tri-State’s ratings remain classified as investment grade, and Tri-State maintains its strong financial position.

Tri-State board of directors approves community solar program recommended by membership’s Contract Committee.

Members are currently evaluating their wholesale power contracts to increase flexibility, including a proposal from United Power.

Tri-State Generation and Transmission Association CEO Duane Highley's statement on the La Plata Electric Association (LPEA) filing.

“Beneficial Electrification is one of the central commitments of our Responsible Energy Plan at Tri-State.” said Duane Highley, Tri-State’s CEO.

The Nucla Station officially retired from service as a coal plant today, the cooperative announced. The end of generation occurred as the facility exh...