Fuel Conversion Factors to Gasoline Gallon Equivalents
Use these conversion factors to calculate the gasoline gallon equivalent (GGE) of alternative fuels. These conversion factors help state and alternative fuel provider fleets report their compliance with Energy Policy Act (EPAct) requirements using the Alternative Compliance method. For more compliance reporting resources, find answers to frequently asked questions.
| Fuel Type | Fuel Measurement Unit | Conversion Factor | GGE Calculation |
|---|---|---|---|
| B100 | Gallons | 1.05 | 1 gal B100 = 1.05 GGE |
| CNG (2,400 psi) | Gallons @ 2,400 psi | 0.18 | GGE = CNG gal (@ 2,400 psi) x 0.18 |
| CNG (3,000 psi) | Gallons @ 3,000 psi | 0.22 | GGE = CNG gal (@ 3,000 psi) x 0.22 |
| CNG (3,600 psi) | Gallons @ 3,600 psi | 0.26 | GGE = CNG gal (@ 3,600 psi) x 0.26 |
| CNG (ccf) | Hundred cubic feet | 0.81 | GGE = CNG ccf x 0.81 |
| Diesel | Gallons | 1.14 | 1 gal Diesel = 1.14 GGE |
| E85 | Gallons | 0.78 | GGE = E85 gal x 0.78 |
| Electricity | kWh | 0.03 | GGE = Electricity kWh x 0.03 |
| Gasoline | Gallons | 1.00 | GGE = Gasoline gal x 1 |
| Hydrogen (gas) | kg | 1.00 | GGE = H2 kg x 1 |
| Hydrogen (liq) | Gallons | 0.27 | GGE = H2 gal x 0.27 |
| LNG | Gallons @ 14.7 psi and -234˚F | 0.66 | GGE = LNG gal x 0.66 |
| LPG | Gallons | 0.74 | GGE = LPG gal x 0.74 |