Duke Energy
1-800-777-9898
http://www.duke-energy.com/residential.asp
Energy United
1-800-522-3793
www.energyunited.com
Piedmont Natural Gas
1-800-752-7504
www.piedmontng.com
City of Charlotte
704-336-7600
http://charmeck.org/city/charlotte/Utilities/Pages/Home.aspx