Skip to the main content of the page

Facilities

Skip Navigation LinksOregon Department of Energy / Energy Facilities & Safety / Facilities / Boardman to Hemingway Transmission Line

Boardman to Hemingway Transmission Line

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. The ADR sought review of proposed changes including relocation of a series capacitor bank, shunt reactors, and related equipment from adjacent to the Bonneville Power Administration’s Longhorn Substation to a new location approximately 15 miles south, adjacent to a PacificCorp station called Maverick Station that is in development in Morrow County, Oregon. On November 21, 2024, the Department received a request to withdraw the ADR. The Department will announce the ADR withdrawal at the December 13, 2024 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
​​​​ ​​​​​

Project Timeline

​
Milestone
  
Additional Documents
Display Date
  
Notice of Intent
07/15/2010
Second Amended Project Order
07/26/2018
Complete Application (Large files)
Contents of the Application

Exhibit B (Main)
Exhibit B (Attachments B1-B4)
Exhibit B (Attachments B5 Part 1)
Exhibit B (Attachments B5 Part 2)
Exhibit B (Attachments B6-B7a)
Exhibit B​ (Attachments B7b)
Exhibit H (Part 1)
Exhibit H (Part 2)
Exhibit I (Part 1)
Exhibit I (Part 2)
Exhibit J (Main Part 1)
Exhibit J​ (Main Part 2)
Exhib​it J (Main Part 3)
Exhibit J (JPA Part 1)
Exhibit J (JPA Part 2)
Exhibit J​ (JPA Part 3)
Exhibit J​ (JPA Part 4)
Exhibit J (Wetland Delineation Part 1)
Exhibit J​ (Wetland Delineation Part 2)
Exhibit J (Wetland Delineation Part 3)
Exhibit J (Wetland Delineation Part 4)
Exhibit J (Wetland Delineation Part 5) 
Exhibit J (Wetland Delineation Part 6)
Exhibit N (Part 1)
Exhibit N​ (Part 2)
Exhibit P1 (Part 1 Main to Attachment P1-6)
Exhibit P1 (Part 2a Attachment P1-7A)
Exhibit P1 (Part 2b Attachment P1-7A)
Exhibit P1 (Part 3 Attachment P1-7B)
Exhibit P1 (Part 4a Attachment P1-8)
Exhibit P1 (Part 4b Attachment P1-8)
Exhibit P1 (Part 5 Attachment P1-9)
Exhibit P2 (GRSG)
Exhibit P3 (Elk)
​
09/28/2018
Additions to Complete Application
03/28/2019

Final Order with Attachments​

09/27/2022

​​RFA1 Attac​hm​ent​s and Figures​​​​​

06/08/2023

​Attachments 2 through P1-6​​

09/22/2023

​RFA2 Attachments/Figures​

04/11/2024
06/28/2024
07/29/2024

​Final Order on RFA2 Attachments​

08/23/2024
08/23/2024

​(withdrawn)

10/11/2024
B2H Record and Selected Contested Case Files​ (One Drive)​

​


​​​​​​​​​​​​​​​​​​​
RESOURCES​​​
 
 
 Federal Permitting Dashboard​

​​  Type A Amendment Contested Case Overview​


 Siting Docket - Online Comments Made to Date​​​​
​​
​Contact the Facility Siting Team:
​​​​​​​​​​​​​​​

Exhibit Files Reference

  • Exhibit A: Applicant Information 
  • Exhibit B: Project Description
  • Exhibit C: Property Location and Maps
  • Exhibit D: Organizational Information
  • Exhibit E​: Permits Required
  • Exhibit F: Property Ownership 
  • Exhibit G: Materials Analysis
  • Exhibit H: Geology and Soil Stability 
  • Exhibit I: Soils
  • Exhibit J: Wetlands
  • Exhibit K: Land Use
  • Exhibit L: Protected Areas
  • Exhibit M: Financial Analysis
  • Exhibit N​: Non-generating Facility Information
  • Exhibit O: Water Requirements
  • Exhibit P: Fish Wildlife Habitat 
  • Exhibit Q: Threatened and Endangered Plants and Animals
  • Exhibit R: Scenic Aesthetic Values 
  • Exhibit S: Cultural Resources
  • Exhibit T: Recreational Facilities 
  • Exhibit U: Public Services
  • Exhibit V​: Waste Minimization 
  • Exhibit W: Site Restoration
  • Exhibit X: Noise 
  • Exhibit Y: Carbon Dioxide Emissions 
  • Exhibit Z: Cooling Towers  
  • Exhibit AA: EMFs – Electric and Magnetic Fields
  • Exhibit BB: Other Information
  • Exhibit CC: Additional Statutes Rules Ordinances
  • Exhibit DD​: Other Specific Standards