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Oregon Department of Energy

Boardman to Hemingway Transmission Line

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ODOE contact
  
Applicant/Certificate holder contact
  
The Boardman to Hemingway Transmission Line is an 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 facility includes roads, communication stations, the Longhorn Station, and temporary construction areas.
Approved/Under Construction. On April 8, the Oregon Department of Energy received Amendment Determination Request (ADR) 002, pursuant to OAR 345-027-0357(3). ADR-002 seeks Department review and concurrence of whether expansion of temporary disturbance areas associated with 15 road segments, from Structure 181/3 to 186/4, in Baker County.  The proposed changes are within the site boundary but outside of the approved micrositing corridor. On May 8, 2026, the Department issued its determination concurring that the changes can occur based on compliance with the terms and conditions of the Second Amended Site Certificate and would not require review through the Council's site certificate amendment process. This determination is available in the Project Timeline below. 

On April 6, the Department received ADR-006. ADR 006 seeks Department review and concurrence of whether the addition of 4.26 miles of access road and shifting of a pulling and tensioning site location requires review through the amendment process. These changes are a result of landowner coordination/requests while also providing safe construction conditions. The proposed changes are within the site boundary but outside of the approved micrositing corridor. ​

On April 29, 2026, the Department received ADR 001 and 011. ADR 001 seeks Department concurrence of a 13.1 acre micrositing corridor expansion for a change in 1.05 miles of access road in Morrow County. ADR 011 seeks Department concurrence on a 0.45-mile new road segment in Baker County. 

The ADRs are available in the “Project Timeline" below. The Department's determination on ADR 002 and receipt of ADR 001 and 011 will be announced at the May 15, 2026 Council meeting. Following review of all ADRs, the Department will issue a written determination confirming whether the changes need to be reviewed through the Council's amendment process. The determination will be posted to the webpage and announced at a Council meeting.

Morrow, Umatilla, Union, Baker, Malheur, Owyhee (Idaho) counties.

Idaho Power CompanySarah EstersonJoe Stippel

Project Timeline

Milestone
  
Additional Documents
Display Date
  
Link
  
Name
  
Name
  
<div style='text-align:left !important'>Notice of Intent</div>
07/15/2010Notice of IntentNotice of Intent
<div style='text-align:left !important'>Second Amended Project Order</div>
07/26/2018Second Amended Project OrderSecond Amended Project Order
<div style='text-align:left !important'>Complete Application (Large files)</div>
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)
​
09/28/2018Complete Application (Large files)Complete Application (Large files)
<div style='text-align:left !important'>Additions to Complete Application</div>
03/28/2019Additions to Complete ApplicationAdditions to Complete Application
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2022-09-27-Final-Order-on-ASC.pdf'>Final Order</a></div>
Final Order with Attachments​​​
09/27/2022/energy/facilities/Facilities%20library/2022-09-27-Final-Order-on-ASC.pdfFinal OrderFinal Order
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2023-06-08-B2H-AMD1-RFA1.pdf'>Complete Request For Amendment 1 (RFA1)</a></div>
​RFA1 Attac​hm​ent​s and Figures​​​​​
06/08/2023/energy/facilities/Facilities%20library/2023-06-08-B2H-AMD1-RFA1.pdfComplete Request For Amendment 1 (RFA1)Complete Request For Amendment 1 (RFA1)
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2023-09-22-B2HAMD1-Final-Order-2023-09-22_Signed.pdf'>Final Order on RFA1</a></div>
​Attachments 2 through P1-6​
09/22/2023/energy/facilities/Facilities%20library/2023-09-22-B2HAMD1-Final-Order-2023-09-22_Signed.pdfFinal Order on RFA1Final Order on RFA1
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2023-09-22-B2HAMD1-Attachment-1-First-Amended-Site-Certificate-Executed.pdf'>First Amended Site Certificate</a></div>
09/22/2023/energy/facilities/Facilities%20library/2023-09-22-B2HAMD1-Attachment-1-First-Amended-Site-Certificate-Executed.pdfFirst Amended Site CertificateFirst Amended Site Certificate
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2014-04-11-B2H-RFA2-Main.pdf'>Request for Amendment 2 (RFA2)</a></div>
​RFA2 Attachments/Figures​​
04/11/2024/energy/facilities/Facilities%20library/2014-04-11-B2H-RFA2-Main.pdfRequest for Amendment 2 (RFA2)Request for Amendment 2 (RFA2)
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2024-08-23-B2HAMD2-Final-Order.pdf'>Final Order on RFA2</a></div>
​Final Order on RFA2 Attachments​
08/23/2024/energy/facilities/Facilities%20library/2024-08-23-B2HAMD2-Final-Order.pdfFinal Order on RFA2Final Order on RFA2
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2024-08-23-B2HAMD2-Attachment-1-Second-Amended-Site-Certificate.pdf'>Second Amended Site Certificate</a></div>
08/23/2024/energy/facilities/Facilities%20library/2024-08-23-B2HAMD2-Attachment-1-Second-Amended-Site-Certificate.pdfSecond Amended Site CertificateSecond Amended Site Certificate
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2025-12-12-B2H-ADR.pdf'>Amendment Determination Request (ADR 004)</a></div>
Supplemental Information​
12/12/2025/energy/facilities/Facilities%20library/2025-12-12-B2H-ADR.pdfAmendment Determination Request (ADR 004)Amendment Determination Request (ADR 004)
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2026-03-27-B2HOPS-ODOE-Determination-on-ADR004.pdf'>Department Determination on ADR 004</a></div>
03/27/2026/energy/facilities/Facilities%20library/2026-03-27-B2HOPS-ODOE-Determination-on-ADR004.pdfDepartment Determination on ADR 004Department Determination on ADR 004
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2026-04-06-B2H-ADR-002.pdf'>Amendment Determination Request (ADR 002) </a></div>
04/06/2026/energy/facilities/Facilities%20library/2026-04-06-B2H-ADR-002.pdfAmendment Determination Request (ADR 002) Amendment Determination Request (ADR 002)
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2026-04-08-B2H-ADR-006.pdf'>Amendment Determination Request (ADR 006)</a></div>
04/08/2026/energy/facilities/Facilities%20library/2026-04-08-B2H-ADR-006.pdfAmendment Determination Request (ADR 006)Amendment Determination Request (ADR 006)
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2026-04-29-B2H-ADR-001.pdf'>Amendment Determination Request (ADR 001)</a></div>
04/29/2026/energy/facilities/Facilities%20library/2026-04-29-B2H-ADR-001.pdfAmendment Determination Request (ADR 001)Amendment Determination Request (ADR 001)
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2026-04-29-B2H-ADR-011.pdf'>Amendment Determination Request (ADR 011)</a></div>
04/29/2026/energy/facilities/Facilities%20library/2026-04-29-B2H-ADR-011.pdfAmendment Determination Request (ADR 011)Amendment Determination Request (ADR 011)
<div style='text-align:left !important'><a href='/energy/facilities/Facilities%20library/2026-05-08-B2HOPS-ODOE-Determination-on-ADR-002.pdf'>Department Determination on ADR 002</a></div>
05/08/2026/energy/facilities/Facilities%20library/2026-05-08-B2HOPS-ODOE-Determination-on-ADR-002.pdfDepartment Determination on ADR 002Department Determination on ADR 002
B2H Record and Selected Contested Case Files

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