Allegheny Power System
   Provides electricity to customers in Maryland, Ohio, Pennsylvania, Virginia, and West Virginia.
   http://www.alleghenypower.com/

American Electric Power
   Provides electricity to customers in Indiana, Kentucky, Michigan, Ohio, Tennessee, Virginia, and West Virginia.
   http://www.aep.com/

Atmos Energy
   Natural gas utility serving customers in 12 states, mostly in the Southeast.
   http://www.atmosenergy.com/

El Paso Electric Company
   Provides electricity to customers in West Texas and Southern New Mexico.
   http://www.whc.net/epec/

Empire District Electric Co.
   Provides electricity to southwestern Missouri and parts of Arkansas, Kansas, and Oklahoma.
   http://www.empiredistrict.com/

ICAP Energy
   An over-the-counter broker of natural gas, electricity and coal. Includes links and information about industry transportation, production and generation, financial markets, weather forecasting and hedging.
   http://us.icapenergy.com/

Idaho Power
   Provides electricity to Idaho, Oregon, and Nevada.
   http://www.idahopower.com/

Kansas City Power & Light
   Provides electricity to customers in western Missouri and eastern Kansas.
   http://www.kcpl.com/

NUI Corp.
   Natural gas utility servicing customers in New Jersey, Florida, North Carolina, Pennsylvania, and Maryland.
   http://www.nui.com/

Old Dominion Electric Cooperative
   A power supply cooperative that supplies power to 14 locally owned electric cooperatives in Virginia, Maryland and Delaware.
   http://odec.com/

Xcel Energy
   Formed by the merger of Minneapolis-based Northern States Power Co. and Denver-based New Century Energies, Xcel Energy serves 12 states.
   http://www.xcelenergy.com/