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.