Duke Energy
Progress Energy Inc
FirstEnergy
Duke Energy Florida
Norfolk Southern Railway
American Electric Power
Fifth Third Bank
PJM Interconnection
Piedmont Natural Gas
NiSource
Vectren
Spectra Energy
Georgia Power
Southern Company
Energy company in Ohio
cinergy.com
Cinergy Corp. was an energy company based in Cincinnati, Ohio, United States, from 1994 to 2006. Its name is a play on the words "synergy", "energy", and "Cincinnati". Wikipedia