| HE | Hawaiian Electric Industries |
| CTRI | Centuri |
| ELPC | Companhia Paranaense de Energia |
| CWT | California Water Service Group |
| AWR | American States Water |
| CPK | Chesapeake Utilities |
| CEPU | Central Puerto |
| SPH | Suburban Propane Partners |
| EDN | Empresa Distribuidora y Comercializadora Norte Sociedad Anónima |