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 | 1.066 | GGE = B100 gal x 1.066 |
| CNG @ 2400 psi | Gallons @ 2400 psi | 0.191 | GGE = CNG gal @ 2400 psi x 0.191 |
| CNG @ 3600 psi | Gallons @ 3600 psi | 0.287 | GGE = CNG gal @ 3600 psi x 0.287 |
| CNG @ 3000 psi | Gallons @ 3000 psi | 0.239 | GGE = CNG gal @ 3000 psi x 0.239 |
| CNG | Hundred cubic feet | 0.877 | GGE = CNG ccf x 0.877 |
| Diesel | Gallons | 1.155 | GGE = Diesel gal x 1.155 |
| E85 | Gallons | 0.734 | GGE = E85 gal x 0.734 |
| Electricity | kWh | 0.031 | GGE = Electricity kWh x 0.031 |
| Gasoline | Gallons | No conversion needed | GGE = Gasoline gal |
| Hydrogen (kg) | kg | 1.019 | GGE = H2 kg x 1.019 |
| Hydrogen (gallons) | Gallons | 0.256 | GGE = H2 gal x 0.256 |
| LNG | Gallons @ 14.7 psi and -234˚F | 0.666 | GGE = LNG gal x 0.666 |
| LPG | Gallons | 0.758 | GGE = LPG gal x 0.758 |