- Sponsors
- Dalton Utilities
- Georgia Transmission Corporation (GTC)
- Duke Energy Carolinas
- Entergy Companies
- LG&E KU
- Municipal Electric Authority of Georgia (MEAG)
- PowerSouth
- Progress Energy Carolinas
- Santee Cooper
- South Carolina Electric & Gas
- South Mississippi Electric Power Association (SMEPA)
- Southern Companies
- Tennessee Valley Authority (TVA)
