| Abbreviation | Definition |
|---|---|
| FREEDOM | Facing Real Exciting Energy Developing Out of Miracles |
| FRET | Florescence Resonance Energy Transfer |
| FRET | Fluorescent Resonance Energy Transfer |
| FRO | Fuse Replacement Order |
| FSEC | Florida Solar Energy Center |
| FTEG | Frio Technology Energy Group |
| FTES | Frio Technology Energy Systems |
| FWE | Food Water Energy |
| FWEC | Floating Wave Energy Converters |
| GAEC | Ghana Atomic Energy Commission |
| GAEP | General Atomics Energy Products |
| GANE | Georgians Against Nuclear Energy |
| GAS | Gasoline |
| GAS | Golden Age Service |
| GBAE | General Bureau Of Atomic Energy |
| GBE | Gun Boat Energy (Boom Beach) |
| GBSM | Geospatial Bioenergy Systems Model |
| GCE | Global Clean Energy |
| GCEA | Greater Cincinnati Energy Alliance |
| GCEF | Global Clean Energy Finance |