Empire Electric's Josh Dellinger and Wendell Fry presented three consumers with rebate checks for using energy efficient equipment.

Tri-State submitted comments about coal leases on federal lands to the Bureau of Land Management during the May 19, 2016 meeting.

The next generation of low-carbon energy technology is now one small step closer to reality at the Dry Fork Power Station outside Gillette, Wyoming.

Colowyo Mine has been honored for its partnership in some of the first Greater Sage-grouse research projects in northwest Colorado since 2001.

Tri-State's 2016 Annual Meeting featured Wyoming Governor Matt Mead, who discussed the regulatory challenges for coal-based electricity.

To say Tri-State’s first annual business clothing drive was a success would be an understatement.

On Feb. 9, 2016, the U.S. Supreme Court granted the applications of numerous parties, including Tri-State, to stay EPA's Clean Power Plan.

For 18 years, Tri-State and its Touchstone Energy member cooperatives have supported Denver's National Western Stock Show.

Draft environmental assessment for the Collom Area Development Project at Colowyo Mine available for public comment on Jan. 19.