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

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.

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

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

Tri-State member Poudre Valley REA and Silicon Ranch Corporation announce that nearly 100,000 solar panels are generating renewable energy.