New biodiesel study ranks five feedstocks by lifecycle emissions as Russian gasoline output falls to 70% of demand
A new life cycle assessment sorted five biodiesel feedstocks by how much carbon each one carries from field to tailpipe, and that ranking affects what a gallon is worth to anyone selling into a low-carbon fuel program. Carbon intensity scores set credit value under California's LCFS and back pathway approval under the federal RFS. A feedstock that scores cleaner earns more per gallon on the same physical fuel.
The feedstock ranking
The study compared five feedstocks on full lifecycle emissions, not just what comes out the tailpipe. For a producer, the CI score largely determines whether a gallon pencils out. Two gallons of biodiesel that burn identically can be worth very different amounts once the CI score is attached, because the low-carbon programs pay for the emissions avoided, not the diesel made. Cleaner pathways mean fatter credits, and feedstock choice is the biggest lever most producers have on that score. The paper doesn't change any rule on its own, but work like this feeds the models that regulators use to set pathway values.
Russian refinery hits
Russian gasoline production fell to about 70% of the country's own demand after Ukrainian drone strikes on refineries, per media reports. Russia isn't a direct US gasoline supplier, but product that tight in a major exporter firms up crude and refined values across the board. When gasoline is firm, the blend math for ethanol at 10% can improve, since ethanol competes on price against the gasoline it displaces. Watch whether Russia leans harder on export limits to keep its home market supplied.
Venezuela crude
Trump announced an oil deal with Venezuela with US pump prices still high six months into the Iran war. More Venezuelan heavy crude could give Gulf Coast refiners cheaper feedstock, which over time could take some pressure off gasoline and diesel. The catch is whether barrels actually move; Venezuelan output has disappointed before, and a headline deal is not a loaded tanker.
Lab-stage ethanol
Researchers reported a nano-sandwich photocathode that turns CO2 into ethanol using sunlight more efficiently. It's early lab work, nowhere near a gallon you could blend or a credit you could sell. Filed under someday, not this quarter.
What to watch
The near-term movers for US biofuels are RIN values and any RFS pathway or LCFS updates that would reprice the feedstocks the new study ranked. On the crude side, watch whether Venezuelan barrels reach US docks and how fast Russia repairs its damaged refineries. Both feed the gasoline price that sets ethanol blend economics, which is what actually hits jobbers and c-store margins.