Tri-State Generation and Transmission Association has completed work and energised the 230 kV Burlington-Lamar transmission line in eastern Colorado (United States). The 180 km-long project, which includes substations in the Colorado towns of Burlington and Lamar, started construction works in February 2024. The project is one of several transmission and distribution (T&D) projects part of the Tri-State’s Eastern Colorado Transmission Expansion plan to be developed through 2028. Tri-State first proposed the expansion project in the early 2000’s, examined the proposal again in 2016, and began development in 2020.
Tri-State also announced the beginning of engineering activities on a 50 km new 230 kV transmission line in Colorado (from Boone to a new Tri-State Huckleberry switching station south of Pueblo) expected to go into service in 2026, and on a 115-km-long new 230 kV transmission line between Tri-State’s Big Sandy Substation and a new Badger Creek switching station south of Fort Morgan, planned for 2028.
Tri-State is a power supply cooperative, operating on a not-for-profit basis, serving electric distribution cooperatives and public power district member-owners in four states. The association delivers power to more than a million electricity consumers.