Bonneville Power Administration Energizes New 500-kV Transmission Line in Washington

Bonneville Power Administration (BPA) energized and brought into service a new 500-kV transmission line in southeastern Washington. The 38-mile, single-circuit line connects BPA's Central Ferry Substation near the Port of Central Ferry in Garfield County, Wash., to BPA's Lower Monumental Substation in Walla Walla County. The line increases the electrical capacity of BPA's transmission system in response to requests for transmission service in this area. Construction on the Central Ferry-Lower Monumental line began in May 2014, following an extensive environmental review and public engagement process.