Boardman to Hemingway Transmission Line Project - Home

The federal agencies are continuing to develop the draft EIS, which is scheduled for release on December 19, 2014. The draft EIS will include documentation of environmental effects for all alternatives analyzed. ODOE is currently reviewing Idaho Power's preliminary Application for Site Certificate.

Idaho Power has coordinated a Community Advisory Process, is analyzing the project’s engineering requirements, and will coordinate right-of-way acquisition, construction and operation.

The Bureau of Land Management (BLM) is leading the federal environmental review and permitting process according to the National Environmental Policy Act (NEPA).

The Oregon Department of Energy (ODOE) is leading the state review process to obtain a Site Certificate from the Energy Facility Siting Council (EFSC).


PacifiCorp, Bonneville Power Administration (BPA), and Idaho Power jointly propose to design, construct, operate and maintain a new 500 kilovolt, single-circuit electric transmission line from a proposed substation near Boardman, Oregon to the Hemingway Substation near Melba, Idaho—known as the Boardman to Hemingway Transmission Line Project or B2H Project. Idaho Power is leading the permitting process for the Project.

The B2H Project would provide additional capacity for exchanging energy between the Pacific Northwest and the Intermountain West, depending on which region is experiencing the highest demand. The Project would also serve load, improve reliability, interconnect resources, and take advantage of seasonal and near-term load and generation diversity between regions. Visit Idaho Power's About the Project page for more information.

In 2010, following a year-long community advisory process, Idaho Power selected a proposed route for the transmission line. The project is now advancing through a federal review process under NEPA led by the BLM and a state review process led by the ODOE-EFSC. If approved by both the federal and state agencies, the final route would be selected from various alternatives and Idaho Power’s proposed route.


This website is a collaboration between Idaho Power, and the lead environmental review agencies: the BLM, the United States Forest Service (USFS), and the ODOE. This is the one-stop place to find project information from the agencies and Idaho Power.

 Using this website you can:

  • Learn about public participation opportunities on the Public Involvement page.
  • Review the overall project schedule on the Schedule page.
  • Review project documents, fact sheets and other materials on the Library page.
  • Find answers to common questions on the FAQs page.
  • Learn more about Idaho Power, BLM and ODOE-EFSC.
  • Submit a comment or question on the Contact Us page.
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11/10/14 - B2H DEIS publication date rescheduled for December 19, 2014

As the Bureau of Land Management continues to develop the draft Environmental Impact Statement (DEIS) for the Boardman to Hemingway Transmission Line (B2H), the project team now anticipates a publication date of December 19, 2014 to allow for final coordination efforts (delayed from November 14,... more>>