Boardman – Hemingway Line is a 500kV overhead line with a length of 471.53km from Boardman, Oregon, US, to Hemingway, Virginia, US.

The project, which is currently in the planning stage, is expected to be commissioned in 2026.


Boardman – Hemingway Line is an overhead line that will be operated by Idaho Power. The line will carry alternating current (AC).

Approximately $1,200m was financed by the authorities to undertake the construction works of the project.

Boardman – Hemingway Line project development status

The construction works on the Boardman – Hemingway Line project will be commenced in 2023 and commissioning is expected in 2026.

About Idaho Power

Idaho Power Co (Idaho Power), a subsidiary of Idacorp Inc, is an electric utility that carries out the generation, purchase, transmission, distribution and sale of electric energy. Idaho Power is regulated by the Federal Energy Regulatory Commission (FERC) and state regulatory commissions of Idaho and Oregon. It provides energy services to residential, commercial, and industrial and irrigation customers. The company supplies energy through hydroelectric, coal, and gas-fired generation facilities and long-term power purchase agreements. It also undertakes the transmission and distribution of electricity through substations, step up stations, and underground and overhead line pole miles.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.