Gateway Project – Boardman to Hemingway (Segment H)

Boardman to Hemingway is a 300-mile, 500kV transmission line that originates at Boardman, Ore., and terminates at Melba, Idaho. The project, sponsored by Idaho Power, and is expected to cost approximately $840m. Construction is set to begin in 2014 and the line is expected to be energized in 2020. The project will increase capacity between Pacific Northwest and Idaho. It will improve the Idaho Power network and provide interconnections to renewable energy customers. The project will provide low cost power to the region and improve reliability. Idaho Power will develop partnerships with utilities along the path that need additional capacity to offset congestion and reliability issues.  The project is one of seven slated for accelerated permitting by the Rapid Response Pilot Program. On January 12, 2012, Bonneville Power Administration, Idaho Power and PacifiCorp have agreed to continue exploring joint participation in the project.

Project Sponsor Line Miles Voltage (kV) From State To State Year in Service
Idaho Power Co. 300 500 OR ID 2020
Estimated Costs ($M) Voltage Type Project Status Project Group Origin Point Destination Point
840 Planned EGP Boardman Hemingway Substation
Interstate Build Start NERC ISO/RTO Country Project Partners
2018 WECC US