In 2019, the nationwide average retail price of compressed natural gas (CNG) was the lowest of all the major vehicle fuels, at $2.21/GGE.
December 8, 2020
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The Clean Cities Alternative Fuel Price Report lists the retail price of vehicle fuels reported in gasoline gallon equivalents (GGE). In 2019, the nationwide average retail price of compressed natural gas (CNG) was the lowest of all the major vehicle fuels, at $2.21/GGE. However, fleets, in particular those operating on propane, can often obtain significantly lower fuel prices by entering into contracts directly with local fuel suppliers, instead of purchasing fuel at retail.
Note: Quarterly retail price data, including taxes, were averaged for 2019. A gasoline gallon equivalent (GGE) is a unit of fuel that has the same amount of energy as one gallon of gasoline.
B99/B100 = 99% to 100% biodiesel
E85 = up to 85% ethanol and 15% gasoline
B20 = 20% biodiesel and 80% diesel
LNG = liquefied natural gas
CNG = compressed natural gas
Source: U.S. Department of Energy, Clean Cities Alternative Fuel Price Reports.