Tri-State is upgrading an existing transmission line segment between the Montrose Substation west of Montrose, Colorado, to the Nucla Substation near ...

Agreement with United Mine Workers of America allows New Horizon Mine in Nucla to begin reclamation activities.

More than 100 people attended the Alta Luna Solar Project ribbon-cutting ceremony March 16, 2017, to celebrate the completion of a 258-acre, 109,239 s...

Tri-State Generation and Transmission Association held its 65th Annual Meeting on April 5, 2017, in Broomfield, Colorado.

Approved mining plan preserves 220 jobs while protecting the greater sage-grouse and other wildlife habitats.

Rick Thompson will begin meeting with employees and community leaders as transition team manager for mine and station retirements.

Proposed revision will enforce stringent emissions limits in 2020 and retire the 427-megawatt Craig Station Unit 1 by Dec. 31, 2025.

Nucla Station to retire by 2022 as part of agreement on proposed revisions to Colorado regional haze plan.

The Wyoming Integrated Test Center (ITC) took another step in efforts to facilitate the next generation of clean carbon technology.