Lamar-Front Range (SB100)

Project Map

The Lamar-Front Range Transmission Plan is a conceptual transmission plan that would consist of approximately 400 miles of new 345 kV, double-circuit transmission that could deliver an estimated 2,000 MW of new generation from energy resources near Lamar and Burlington to load centers along the Front Range. The plan includes the following transmission components:

  • Two 345 kV transmission circuits between Lamar and Avondale
  • Two 345 kV transmission circuits between Lamar and Burlington
  • Two 345 kV transmission circuits between Burlington and Big Sandy
  • One 345 kV transmission line between Big Sandy and Missile Site
  • One 345 kV transmission line between Big Sandy and Story
  • One 345 kV transmission line between Story and Pawnee
  • A new Avondale Substation
  • Two 230 kV transmission circuits between Lamar and Vilas

The proposed transmission interconnection and termination points were selected based on their proximity to the location of potential generation resource development, including renewable resources, or their ability to deliver such resources to serve some of the state’s largest load centers. The Lamar-Front Range plant is estimated to cost approximately $900 million. The planning studies have been completed, and project study reports are available. However, no decisions have been made with respect to implementation. Both Tri-State and PSCo continue to evaluate what strategies are most appropriate for moving forward.