| CNP | CenterPoint Energy |
| IDA | IDACORP |
| ETR | Entergy |
| PNW | Pinnacle West Capital |
| CEPU | Central Puerto |
| LNT | Alliant Energy |
| AEE | Ameren |
| KEP | Korea Electric Power |
| POR | Portland General Electric Company |
| CMS | CMS Energy |
| DTE | DTE Energy Company |
| ENIC | Enel Chile |
| EVRG | Evergy |