June 4, 2024. The Transport Project (TTP) and Coalition for Renewable Natural Gas (RNG Coalition) – with partner California Renewable Transportation Alliance –announced that California fleets fueled with Bio-CNG achieved carbon-negativity in their transportation operations last calendar year for the fourth straight year.
Renewable natural gas (RNG) accounted for 97% of all on-road fuel used in natural gas vehicles in California in 2023. According to data from the California Air Resources Board (CARB) the annual average carbon intensity score of Bio-CNG in that mix was -126.42 gCO2e/MJ.
In fact, Bio-CNG holds the lowest average carbon intensity of any clean fuel option on California’s roadways today and is the only fuel producing a negative carbon intensity fleet outcome in the California Low Carbon Fuel Standard (LCFS) Program, which includes ethanol, biodiesel, renewable diesel, Bio-CNG, Bio-LNG, electricity, alternative jet fuel, and hydrogen.
Even more, while RNG made up just 5.1% of all on-road alternative fuels dispensed by volume, it generated 19.2% of all carbon dioxide equivalent (CO2e) emission reductions of on-road alternative fuels reported under the California LCFS in 2023.
Captured above ground from organic material in agricultural, wastewater, landfill, or food waste, RNG can produce carbon-negative results when fueling on-road vehicles like short- and long-haul trucks, transit buses, and refuse and recycling collection vehicles.
TTP and RNG Coalition report that in 2023 a total of 209.9 million gallons (DGE) of natural gas were used as motor fuel in the state. Of that, 203.10 million gallons (DGE) were from renewable sources.
More information in www.usgasvehicles.com




