| Abbreviation | Definition |
|---|---|
| IEME | Inpatient Energy Management Education |
| IEMSC | Indian Energy and Mineral Steering Committee |
| IEMSC | Indian Energy and Minerals Steering Committee |
| IEN | Integrated Energy Network |
| IENR | International Energy and Natural Resources |
| IEO | Intelligent Energy Optimizers |
| IEO | International Energy Outlook |
| IEPC | Integrated Energy Performance Contracting |
| IEPC | International Energy Personnel Consulting |
| IERA | Idaho Energy Resources Authority |
| IERC | International Energy Research Centre |
| IES | Integrated Energy Systems |
| IESA | India Energy Storage Alliance |
| IESA | interactive Energy Savings Account |
| IESC | International Energy and Sustainability Conference |
| IESL | International Energy Services Limited |
| IESO | Independent Electricity System Operator |
| IESR | Institute of Energy Studies and Research |
| IESS | India Energy Security Scenarios |
| IESS | Integrating Energy Storage Systems |