Segment F - Aeolus to Mona

Project Overview

As part of PacifiCorp, we are committed to providing safe, reliable, adequate and efficient electric power to customers. To further that commitment, the company is planning a new high-voltage transmission line stretching from the Aeolus substation in southeastern Wyoming to the Clover substation near Mona, Utah.

This proposed line segment is part of the Gateway South portion of PacifiCorp's transmission expansion project.

Project Timeline

  • Public Scoping – Early 2011
  • Informational Meetings – Early 2011
  • Environmental Impact Statement – December 2008 - 2015
  • State and local permitting and obtaining rights of way – To be determined
  • Estimated line in service for customers – 2020 - 2024

Additional Information About the Project

Information about this transmission project, including a project map (PDF) and a landowner parcel map are posted on this website and will be updated as the project progresses and details are developed. Please check back periodically for additional information.

To contact us about this project, please call 801-220-4221 or e-mail Please be sure to include the project name – "Aeolus to Mona project" – in your inquiry.

On July 24, 2013, the BLM announced its Preliminary Agency Preferred Route for the project. The map is available on the BLM website (PDF).

On February 21, 2014, the Bureau of Land Management (BLM) published its Notice of Availability of the Draft Environmental Impact Statement (DEIS) for the Gateway South project. The DEIS document is available on the BLM website along with the BLM public open house meetings. In addition, links to the shape files and Google Earth mapping for the routes analyzed in the DEIS are available below. Comments on the draft Environmental Impact Statement were submitted directly to BLM during the official comment period that closed May 22, 2014.

The Bureau of Land Management is now preparing the Final Environmental Impact Statement and currently plans to publish the document in October 2015.

Download Gateway South shape files

Download Gateway South Google Earth files

(Updated March 4, 2015)