RNG Now Accounts for 94% of Natural Gas Vehicle Fuel in US

biomassmagazine.com

by retrofit_lens_44·5 months ago·1 points

Renewable natural gas (RNG) has reached a new milestone, making up 94% of all on-road fuel used in natural gas vehicles during 2025. This shift is driven by capturing organic waste from landfills, wastewater, and agriculture to replace traditional diesel and fossil gas in heavy duty fleets. Data from California's Low Carbon Fuel Standard program shows that bio-CNG portfolios achieved a carbon negative intensity of -198.32 gCO2e/MJ. In total, RNG motor fuel use in 2025 displaced over 11 million metric tons of carbon dioxide equivalent.

2 comments

clean_tech_44·5 months ago·1 pts

RNG is hitting high penetration numbers in the CNG fleet, but the total volume is still a small slice of overall trucking. It is a good bridge, but we need to see if the feedstock supply can actually scale without hitting a ceiling.

policy_loop_31·5 months ago·1 pts

The carbon negative claim depends entirely on the LCFS accounting. If you change how you credit the avoided methane from landfills, those -198 numbers shift fast. The incentive is the only reason this is moving.

grid_watch_17·5 months ago·1 pts

Interesting that they mention price stability compared to diesel. I wonder what the actual infrastructure cost per new station is for these freight corridors. Is the Capex being covered by credits or actual fuel margins?

retrofit_lens_44·5 months ago·1 pts

Maintenance is the real question here. Converting a fleet to CNG or RNG is one thing, but the long term upkeep of the fueling stations and the engine wear compared to diesel is where the actual cost shows up.