We are #1 in solar power among cooperative G&Ts.
We and our members have been delivering electricity using hydro power since 1952.
We have increased our purchased wind power seven times since 2010.
Half a million homes are powered by renewable resources in our members' service territories.
30 percent of the electricity co-op members use comes from renewable resources, which is just one part of our diverse energy mix.

A growing part of our energy portfolio comes directly from water, sun and wind. In fact, 30 percent of the electricity consumed by our cooperative members comes from renewable resources.

Since our founding in 1952, we’ve delivered hydropower to rural towns, farms and ranches. We’re growing our renewable portfolio as technological improvements, lower production costs, and domestic energy policy have resulted in lower renewable energy costs.

Our member systems are also using local, distributed renewable energy projects in many of their communities. Together, we generate possibilities.

Tri-State renewables projects:


Hydropower has played a central role in our diverse energy mix since our inception in 1952. Today, we are one of the largest purchasers of federal hydropower in the West, including many small hydroelectric generation facilities located across our members' service territories.

5 MW

Boulder Canyon Hydroelectric Project

Boulder, Colorado

2.9 MW

Garland Canal Hydroelectric Project

Powell, Wyoming

260 kW

Mancos Hydro Project on Jackson Gulch Reservoir

Mancos, Colorado

8 MW

Tri-County Water Hydropower Project

Ridgway, Colorado

5.6 MW

Vallecito Hydroelectric Project

Durango, Colorado

3.5 MW

Williams Fork Hydro Plant

Parshall, Colorado


As wind technologies improved, we increased our purchase of power from several large wind projects. In 2014, we were named the U.S. Department of Energy’s large wind co-op of the year.

150 MW

Carousel Wind

Burlington, Colorado

91 MW

Colorado Highlands Wind

Fleming, Colorado

51 MW

Kit Carson Wind

Burlington, Colorado

75 MW

Twin Buttes II Wind

Lamar, Colorado


With plentiful solar resources spread across the West, we rank #1 in solar power purchases among all U.S. cooperative G&Ts, with three utility-scale solar projects, according to the National Rural Electric Cooperative Association.

25 MW

Alta Luna Solar

Deming, New Mexico

30 MW

Cimarron Solar

Cimarron, New Mexico

30 MW

San Isabel Solar

Trinidad, Colorado