The routes shown reflect changes submitted in February 2012 to the Bureau of Land Management (BLM) in a revised project application (know as an SF-299). For the routes analyzed by the BLM in the draft EIS, please see the BLM’s interactive map and the visit the BLM’s project website.
This project is jointly proposed by Idaho Power and Rocky Mountain Power to build and operate approximately 1,100 miles of new high-voltage transmission lines between the Windstar Substation near Glenrock, Wyoming and the Hemingway Substation near Melba, Idaho. The project would include approximately 300 miles of 230 kilovolt (kV) lines in Wyoming and approximately 800 miles of 500 kV lines in Wyoming and Idaho. Idaho Power and Rocky Mountain Power are building this new transmission line to provide electricity to meet increasing customer needs. It will deliver power from existing and future electric resources including renewable resources such as wind energy. In addition, the line will provide strength and reliability to the region’s transmission system. The project is scheduled for line segments to be completed in phases between 2016 and 2021. This website contains important facts about the project, the companies and maps. Updates will be posted as new information becomes available, so check back often! |
 
03/30/12 - Changes to Segments Announced
In February 2012, Rocky Mountain Power and Idaho Power announced changes to the project on Segments 1, 2 and 4. To learn more about these changes, view the route information. |
