Gateway West Transmission Line (Idaho and Wyoming)
This transmission corridor, proposed by Idaho Power Company and Rocky Mountain Power, starts just outside of Casper, Wyoming and ends in Boise, Idaho. The line is being constructed primarily to meet a growing consumer need and improve reliability of the region's transmission system. This project will add 1,000 miles of new transmission lines across southern Idaho and southern Wyoming, most of which will be high-voltage. This project is part of several other transmission projects being pursued by PacifiCorp: Gateway South (Wyoming, Colorado, Utah) and Gateway Central (Idaho and Utah).
This high-voltage, alternating current, transmission line is the furthest along of all the proposed high voltage transmission lines. Audubon partnered with several local environmental groups to submit comments on the Draft Environmental Impact Statement (EIS) prepared by the Bureau of Land Management (BLM) in October 2011. Some major concerns were that the proposed line would pass through Important Bird Areas (http://web4.audubon.org/bird/iba/) identified by Audubon and would strongly impact sensitive species like the Greater Sage-grouse and Golden Eagles. Because of the concerns surrounding Greater Sage-grouse, the BLM developed a precedence-setting Sage-grouse Habitat Equivalency Analysis (HEA) for the proposed Gateway West Transmission line, which included two public meetings. As part of the National Environmental Policy Act (NEPA), Audubon submitted comments on the BLM's Final EIS, which was released in April 2013. Audubon and partners expressed final opinions on the proposed route and its alternatives as well as highlighting important steps for mitigation and habitat reclamation. Of specific concern was the inadequate consideration and protections afforded to Golden Eagles and other raptors. Visit the websites below to find out more information and how you can get involved.
- The Developer's Website (includes maps)
- Bureau of Land Management's (BLM) Website
- Map of Proposed Routes (includes interactive map)
- Information on the BLM's proposed Sage-grouse Impact Analysis (FEIS)
- Project Timeline
- Tower Design
- Known Raptor Nests and Roosts, Wyoming
- Known Raptor Nests and Roosts, Idaho
- Greater Sage-grouse Core Areas and Leks, Wyoming
- Preliminary Priority/General Sage-grouse Habitat, Idaho
- How Public Can Get Involved: