Potomac-Appalachian Transmission Highline

The Potomac-Appalachian Transmission Highline (PATH) is a proposed 290 mile 765 kilovolt electric power transmission line designed to supply power from the Amos Substation located in Putnam County, West Virginia, to a proposed electrical substation to be constructed in Frederick County, Maryland. If approved, the transmission line will be owned and operated by subsidiary companies of Allegheny Energy and the American Electric Power Company. The route as currently proposed goes through 13 counties in West Virginia, three counties in Virginia, and Frederick County in Maryland. The endpoint in Maryland would be a proposed electrical substation in Kemptown, MD, that would be in a residential area surrounded by about 1,300 houses. The Kemptown substation would be the largest substation ever built by Allegheny Power.