| Abbreviation | Definition |
|---|---|
| IXEH | IX Energy Holdings, Incorporated |
| IZEB | ZTransform with Low Energy and Bandwidth |
| JAEC | Japan Atomic Energy Commission |
| JAEC | Jordan Atomic Energy Commission |
| JAEI | Japan Africa Energy Initiative |
| JEA | Jackson Energy Authority |
| JEC | Jefferson Energy |
| JEC | Jefferson Energy Cooperative |
| JEDI | Joint Energy Development Interests |
| JEEL | Journal of Energy and Environmental Law |
| JEES | Journal of Energy and Environmental Sustainability |
| JES | JENZ Energy Saver |
| JES | Jet Energy Scale |
| JET | Joys of Energy Testing |
| JETC | Joint Electrical Training Committee |
| JHEP | Journal of High Energy Physics |
| JNES | Japan Nuclear Energy Safety |
| JPEA | Japan Photovoltaic Energy Association |
| JPEC | Jackson Purchase Energy Corporation |
| JREC | Johannesburg Renewable Energy Coalition |