| Abbreviation | Definition |
|---|---|
| ANSER | Argonne Northwestern Solar Energy Research |
| AOCE | Arabian Oil Company of Energy |
| AOEA | Atlantic Ocean Energy Alliance |
| AOEC | Asia Offshore Energy Conference |
| AOEE | Advanced Optoelectronics for Energy and Environment |
| APE | Active Pressure And Energy |
| APEA | American Public Energy Agency |
| APEDA | Arunachal Pradesh Energy Development Agency |
| APEF | Asian and Pacific Energy Forum |
| APEG | Asia Pacific Energy Group |
| APEP | Amadvanced Power Energy Program |
| APERC | Asia Pacific Energy Research Center |
| APERC | Asia Pacific Energy Research Centre |
| API | American Petroleum Institute |
| APSEC | APEC Sustainable Energy Center APSEC |
| APWE | Aeolus Power Wind Energy |
| ARCER | Agile Research Consortium and Energy Resource |
| ARCER | Average Retail Cooperative Energy Rate |
| AREC | Affiliated Renewable Energy Center |
| AREC | Arab Renewable Energy Commission |