| HE | Hawaiian Electric Industries |
| PNW | Pinnacle West Capital |
| CEPU | Central Puerto |
| LNT | Alliant Energy |
| AEE | Ameren |
| CNP | CenterPoint Energy |
| KEP | Korea Electric Power |
| IDA | IDACORP |
| DTE | DTE Energy Company |
| GNE | Genie Energy |
| EDN | Empresa Distribuidora y Comercializadora Norte Sociedad Anónima |
| ENIC | Enel Chile |