Boardman to Hemingway (B2H) Transmission Project, US October 2, 2023 | North America Project Update, Project Update The Boardman to Hemingway (B2H) project entails the construction of a 300-mile (483-km), 500 kV power line, which will create a link between Boardman, Oregon, and Melba, Idaho. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password