| Abbreviation | Definition |
|---|---|
| ESFF | Energy Stars For Free |
| ESG | Energy Systems Group |
| ESI | Electricity Supply Industry |
| ESI | Energy Security Initiative |
| ESI | Energy System Integration |
| ESIC | Energy Storage Integration Council |
| ESIC | Energy Systems Innovation Center |
| ESID | Energy Special Improvement District |
| ESIF | Energy Systems Integration Facility |
| ESIS | Energy Standards Information System |
| ESL | Energy Systems Laboratory |
| ESLC | Energy Security Leadership Council |
| ESLI | Energy Science Laboratories Inc |
| ESMAP | Energy Sector Management Assistance Program |
| ESMAP | Energy Sector Management Assistance Programme |
| ESMS | Energy Saving Management System |
| ESN | Energy Systems Network |
| ESNA | Energy Storage North America |
| ESNH | ENERGY STAR for New Homes |
| ESNJ | Energy Solutions of New Jersey |