| Company Name | Reviews | Rating |
|---|---|---|
| SouthWest Water Company | 1 | 5.0/5.0 |
| Middlesex Water | 4 | 4.3/5.0 |
| Connecticut Water Service | 1 | 4.0/5.0 |
| Bangor Hydro-Electric | 1 | 5.0/5.0 |
| California Water Service | 1 | 5.0/5.0 |
| Unitil | 1 | 5.0/5.0 |
| WGL Holdings | 2 | 4.5/5.0 |
| South Jersey Industries | 1 | 4.0/5.0 |
| Southern Company | 1 | 4.0/5.0 |
| Energy Future Holdings | 1 | 5.0/5.0 |
| Ameren | 2 | 4.5/5.0 |
| United Water (New Jersey) | 2 | 4.5/5.0 |
| Aqua America | 2 | 5.0/5.0 |
| Piedmont Natural Gas | 1 | 4.0/5.0 |
| Pepco Holdings | 1 | 4.0/5.0 |
| ALLETE | 1 | 4.0/5.0 |
| Nicor | 1 | 4.0/5.0 |
| NiSource | 2 | 4.5/5.0 |
| National Fuel Gas | 1 | 5.0/5.0 |
| National Grid | 1 | 4.0/5.0 |
| New Jersey Resources | 1 | 5.0/5.0 |
| Northeast Utilities | 1 | 4.0/5.0 |
| Xcel Energy | 2 | 4.5/5.0 |
| FirstEnergy | 1 | 5.0/5.0 |
| OGE Energy | 3 | 4.0/5.0 |
| Orange & Rockland Utilities | 2 | 4.5/5.0 |
| AES Corporation | 2 | 4.5/5.0 |
| Aquarion | 2 | 4.5/5.0 |
| MDU Resources | 1 | 4.0/5.0 |
| DTE Energy | 2 | 5.0/5.0 |
| Cleco | 3 | 4.3/5.0 |
| Allegheny Energy | 1 | 4.0/5.0 |
| American Water | 3 | 4.3/5.0 |
| Constellation | 2 | 4.0/5.0 |
| Columbia Gas of Massachusetts | 1 | 5.0/5.0 |
| NSTAR | 2 | 4.0/5.0 |
| Cascade Natural Gas | 1 | 4.0/5.0 |