Bull elk on Elk Mountain near Newcastle, Wyoming. Photo by Nate West. Oil rig in Wyoming. Wild horse near Rock Springs, Wyoming. Coal mining operations in the Powder River Basin of northeastern Wyoming. Pronghorn in Wyoming.
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TransWest Express Transmission Line Project

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Proponent's Website 
Direct current power transmission line.
The Bureau of Land Management (BLM) and the Western Area Power Administration (Western) are co-lead agencies in preparing an environmental impact statement under the National Environmental Policy Act (NEPA) for the TransWest Express Transmission Project. Western plans to partially fund the project under the American Recovery and Reinvestment Act of 2009.

The TransWest Express Transmission Project would provide transmission infrastructure and capacity to deliver approximately 3,000 megawatts (MW) of electric power from renewable and other energy resources in south-central Wyoming to a substation hub in southern Nevada. The proposed project would consist of an approximately 725-mile-long, 600-kilovolt (kV), direct current (DC) transmission line, a northern terminal located near Sinclair, Wyoming, and a southern terminal approximately 25 miles south of Las Vegas, Nevada. A ground electrode system (required for transmission line emergency shutdown) would be installed within 100 miles of each terminal.

The proposed transmission line (and alternatives) would cross Wyoming, Colorado, Utah, and Nevada, and encompass lands owned or administered by the BLM, U.S. Forest Service (USFS), National Park Service, Bureau of Reclamation, Utah Reclamation Mitigation and Conservation Commission, various state agencies, Native American tribes, municipalities, and private parties. The BLM and Western have included the government entities as cooperating agencies in this EIS process.

The BLM and Western released the draft environmental impact statement (DEIS) for a 90-day public comment period, as announced by publishing a Notice of Availability in the Federal Register on July 3, 2013.

Agency Preferred Alternative

As part of the DEIS, and in coordination with the USFS, state, local and other federal governments and agencies, the BLM has identified an agency preferred alternative for the project. The agency preferred alternative was identified using Council on Environmental Quality criteria for determining significant impacts. The preferred alternative presented in the DEIS is not the BLM final decision. Public comment on the DEIS will be considered and the agency preferred alternative may change before publication of the Final EIS, based on public comment, changes by the project proponents, or additional feedback from cooperating agencies.

To view the DEIS

Public Involvement

A series of 13 public meetings/hearings were held throughout the project area to provide information on the project and the DEIS. Each meeting provided information displays about the EIS process and schedule, project locational maps, impacts to resources, potential land use plan amendments, and a station for people to provide written and oral comments on the DEIS. Attendees were provided the opportunity to have their verbal comments transcribed by a court reporter for the public record. The public comment period on the DEIS closed on Monday, September 30, 2013.

Schedule of DEIS Public Meetings/Hearings

These meetings were held in August and September 2013.

BLM and Western managers and resource specialists were available at the meetings to answer questions.

Comments were accepted when submitted by the following methods:

  • Mail comment form or letters to: TransWest Express Project, Bureau of Land Management, P.O. Box 20678, Cheyenne, WY 82003
  • Email to:
  • Oral testimony, comment forms or letters submitted at a public meeting/hearing

Contact: Sharon Knowlton, Project Manager

Phone: 307-775-6124  |  Email:

Mail: TransWest Express Project  |  PO Box 20678  |  Cheyenne WY  82003