| Abbreviation | Definition |
|---|---|
| ERRB | Energy Resources Research Building |
| ERRT | Energy Resources Research and Technology |
| ERS | Energy Recovery System |
| ERS | Energy Recovery Systems |
| ERSAF | Energy Research and Social Advancement Foundation |
| ERSS | Energy Research and Social Science |
| ERSS | Energy Research Social Science |
| ERSU | Energy Research Support Unit |
| ERT | Energy Research Triangle |
| ERT | Energy Resources and Technologies |
| ERU | Energy recovery unit |
| ERU | Energy Research Unit |
| ERV | Energy Recovery ventilation |
| ERV | Energy Recovery Ventilators |
| ERW | Energy Return Wheel |
| ES | Electricity Supply |
| ES | Energy Saving |
| ES | Energy Sources |
| ESA | Electricity Supply Authority |
| ESA | Energy Storage Association |