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The Boardman to Hemingway Transmission Line is an approved, not yet constructed, facility that includes an ASC approved route approximately 270.8-mile-long single-circuit 500-kV electric transmission line that crosses five counties in Oregon, Morrow, Umatilla, Union, Baker, and Malheur counties. The approved facility also includes four ASC alternative routes of approximately 33.3 miles of transmission line. The RFA1 approved routes include four alternative 500-kV transmission line routes equaling approximately 8.8 miles. The approved facility also includes roads, communication stations, the Longhorn Station, and temporary construction areas. | Approved. On September 27, 2022, Council approved the Final Order on ASC and issued a site certificate for the facility. On September 22, 2023, Council approved the Final Order on RFA1 and issued the first amended site certificate. On August 23, 2024, Council approved the Final Order on RFA2. See the Timeline below for the ASC, RFA1, RFA2 materials, and the associated Final Orders.
The approved but not yet constructed facility has a construction commencement deadline of October 6, 2026.
On October 11, 2024, the Oregon Department of Energy (Department) received an Amendment Determination Request (ADR), pursuant to OAR 345-027-0357(3), from Idaho Power Company for the Boardman to Hemingway Transmission Line Project Site Certificate. Following review of the ADR, the Department will issue a written determination, which will be provided on this project webpage, and announced at a subsequent Council meeting.
| Morrow, Umatilla, Union, Baker, Malheur, Owyhee (Idaho) counties.
| | Applicant/Certificate holder:
Idaho Power Company | | ODOE contact:
Kellen Tardaewether | | Applicant/Certificate holder contact:
Joe Stippel | |
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