. . "Allegheny Hydro" . "Potomac Edison Company" . . . . . "West Penn Power" . . . "bought byFirstEnergy" . . "Allegheny Power Systems" . . . "1925" . . . . . "4211" . . . . . "Allegheny Energy" . "Allegheny Energy, Inc." . "Allegheny Energy" . . . "1907" . "9.315E8" . . "1907-01-31" . "4.117E8" . . . . "Allegheny Power" .