Tri-State CEO Duane Highley commented on the reopening of the record by Colorado Air Quality Control Commission (AQCC).

In showing the benefits of cooperative membership, Tri-State’s board approved the return of $30 million in patronage capital for 2020 to it's members.

Tri-State files its first Electric Resource Plan with Colorado Public Utilities Commission under new rules with their “preferred scenario.”

On Dec. 1, Tri-State will submit an electric resource plan to Colorado Public Utilities Commission that includes an 80% reduction in greenhouse emissi...

Tri-State’s participation in a Western Interconnect RTO is essential to advance our members’ reliability, affordability and clean energy goals.

Tri-State will be submitting a “preferred scenario” to reduce emissions associated with its wholesale electricity sales in Colorado by 80% by 2030.

Tri-State Generation and Transmission Association applauded a decision today by the Colorado Public Utilities Commission (CPUC) to dismiss a complaint...

Members of not-for-profit interstate power supplier Tri-State Generation and Transmission Association will soon have expanded opportunities to pursue ...

Tri-State announced today its ambitious goal to lower wholesale rates, dramatically increase its renewable resources and reduce emissions