ECONnergy Energy Co., Inc
- Suppliers of deregulated energy. Natural gas and electricity. Programs throughout NY, NJ and PA.
- http://www.econnergy.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/

Xcel Energy
- Utility supplier of electric power and natural gas service in Colorado, Kansas, Michigan, Minnesota, New Mexico, North Dakota, Oklahoma, South Dakota, Texas and Wisconsin.
- http://www.xcelenergy.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/

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

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

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

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

Atmos Energy
- Natural gas utility. Provides regulated service to customers in 12 states ranging from the Rocky Mountains to the Southeast, and manages pipelines and other industrial and municipal services in a larger region.
- http://www.atmosenergy.com/

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

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