is a U.S. self-financed federal agency which transmits and sells wholesale electricity in Washington, Oregon, Idaho, and western Montana. The BPA is part of the U.S. Department of Energy, and is headquartered in Portland, Oregon.  The BPA was created in 1937 to transmit and market the hydroelectricity generated from the Bonneville Dam and, later, the Grand Coulee Dam and other federal dams in the Pacific Northwest. BPA provided about 35% of the electricity used in the region.  The BPA now markets the electricity from thirty-one federal hydroelectric dams on the Columbia River and its tributaries, as well as from the Columbia Generating Station, a nuclear plant located on the Hanford Site in eastern Washington.

Also see TVA.

Link:  www.bpa.gov