The Transport Project (TTP) and Coalition for Renewable Natural Gas (RNG Coalition) today announced that 79% of all on-road fuel used in natural gas vehicles in calendar year 2023 was renewable natural gas (RNG), surpassing the previous year’s record-breaking level.

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. California Air Resources Board data confirms that the annual average carbon intensity (CI) value of California’s bio-CNG vehicle fuel portfolio in its Low Carbon Fuel Standard (LCFS) program for the first three quarters of 2023 was carbon negative and below zero at -118.85 gCO2e/MJ.