| Abbreviation | Definition |
|---|---|
| GTRE | Greene Tech Renewable Energy |
| GW | Giga Watt |
| GWE | Global Wind Energy |
| GWE | Green Waste Energy |
| GWEC | Global Wind Energy Council |
| HACE | Hydro Air Concept Energy |
| HAEA | Hungarian Atomic Energy Authority |
| HAEC | Halifax American Energy Company |
| HAEC | Hunterdon Area Energy Cooperative |
| HAEE | Hellenic Association For Energy |
| HAEE | Hellenic Association for Energy Economics |
| HAEE | Hellenic Association of Energy Economic |
| HAZEL | Homogeneous Assembly Zero Energy Laboratory |
| HDIE | Holographic Dark Information Energy |
| HDIP | Hydrocarbon Development Institute of Pakistan |
| HEA | Home Energy Analytics |
| HEAC | Home and Energy Advice Centre |
| HEAF | High Energy Arc Fault |
| HEAF | High Energy Arcing Faults |
| HEAF | Home Energy Assistance Fund |