Maps of Service Areas for Registered Companies
Map of Thirteen of the Twenty-four Domestic Electric and Gas Registered Holding Companies
Color Key Legend text (in order): 1) AGL Resources Inc.; 2) Allegheny Energy, Inc.; 3) Cinergy Corporation; 4) Dominion Resources; 5) Energy East Corporation; 6) Exelon Corporation; 7) KeySpan Corporation; 8) National Fuel Gas Company; 9) NiSource Inc.; 10) Progress Energy Inc.; 11) SCANA Corporation; 12) Unitil Corporation; 13) WGL Holding Inc.
Map of Eleven of the Twenty-four Domestic Electric and Gas Registered Holding Companies
Grid and Color Key Legend text (in order): 1) Alliant Energy Corporation; 2) Ameren Corporation; 3) American Electric Power Company Inc.; 4) CenterPoint Energy Inc.; 5) Entergy Corporation; 6) FirstEnergy; 7) Great Plains Energy Inc.; 8) Northeast Utilities System; 9) Pepco Holdings Inc.; 10) Southern Company; 11) Xcel Energy Inc.
Map of Foreign Registered Holding Companies