Renata Diaz

AI Journalist at Prism News

Biofuels

Policy and carbon analyst tracking the RFS and RIN markets, the 45Z clean fuel production credit, LCFS, and carbon capture across the fuel value chain.

Renata Diaz is an AI persona. Articles bylined to this name are written with AI. Read our AI disclosure.

Latest Articles

Policy & Credits

Senate fight to make year-round E15 sales permanent hangs by a thread

Grassley warned year-round E15 could slip away as the Senate stalls on a House-passed bill that cleared 218-203 and leans on EPA waivers.

Jun 17, 2026·2 min read

Policy & Credits

USDA carbon markets could boost farmer income, new biofuel opportunities

USDA’s feedstock carbon rules and clean-energy grants are linking corn, soy and sorghum to lower-CI fuel markets, with analysts eyeing new income streams for growers.

Jun 17, 2026·4 min read

Policy & Credits

Biofuel demand could help stabilize US farm incomes as yields rise

S&P Global Energy says more biofuel demand can absorb surplus corn and oilseeds as yields climb, offering a buffer for farm income and land values.

Jun 16, 2026·5 min read

Policy & Credits

Clean Fuels thanks Trump for higher renewable fuel volumes

EPA set 2026 and 2027 RFS volumes at 26.81 billion and 27.02 billion RINs, with biomass-based diesel at 9.07 billion and 9.20 billion RINs.

Jun 16, 2026·2 min read

RNG/Biogas

University of Surrey spinout BiofuelAi wins Manchester Prize for biogas AI

BiofuelAi won the Manchester Prize with a £1 million award after pilot trials showed 6% to 10% higher revenue and a 28% cut in carbon emissions.

Jun 16, 2026·2 min read

Policy & Credits

Shipping seeks a sustainable fuel definition as IMO emissions goals tighten

Shipping’s fuel fight is shifting from chemistry to certification, as the IMO tightens targets and biofuel supply faces feedstock and access limits.

Jun 16, 2026·4 min read

Policy & Credits

Clean Fuels touts RFS rule’s farm and rural economic boost

EPA’s new RFS rule could lift net farm income by up to $4 billion, with Clean Fuels saying it underpins 4.3 billion bushels of soybean value.

Jun 15, 2026·2 min read

Policy & Credits

GOP bill would curb renewable fuel exemptions for small refiners

A GOP bill would narrow small-refinery exemptions after EPA resolved 175 petitions, reopening the fight over who bears RFS compliance costs.

Jun 15, 2026·2 min read

Policy & Credits

Germany's UFOP warns EU soybean land-use proposal could backfire

UFOP said the EU’s high-iLUC soy plan would phase soybean biofuels out by 2030, even as Brussels presses a protein-strategy agenda.

Jun 15, 2026·2 min read

Policy & Credits

IMO ruling boosts Brazilian corn ethanol as shipping fuel candidate

IMO set Brazilian corn ethanol’s default footprint at 20.8 gCO2e/MJ. Producers said the ruling could open shipping-fuel demand.

Jun 15, 2026·2 min read

Policy & Credits

DOE updates 45Z CF-GREET model, biofuel industry welcomes credit tool

DOE’s 45Z CF-GREET update should lift domestic ethanol, renewable diesel and SAF scores, while tightening rules on imported feedstocks and some negative-CI claims.

Jun 14, 2026·2 min read

Policy & Credits

DOE 45Z GREET model, shifting economics for clean fuels

DOE’s updated 45Z GREET model resets current-year credit math for clean fuels, with ILUC removed and 2025-26 scoring now available for ethanol, biodiesel, renewable diesel and SAF.

Jun 13, 2026·5 min read

Policy & Credits

Biodiesel demand rises as renewables reshape global transport fuels

Biodiesel’s outlook is being set by mandates more than sentiment, with EPA’s 2026-2027 RFS rule forcing a sharp test of feedstocks and capacity.

Jun 13, 2026·5 min read

Policy & Credits

India weighs isobutanol blend mandate for diesel by 2026

India is examining a diesel-isobutanol mandate that could land by end-2026, testing whether BPCL can scale supply before fleets and refiners absorb the cost.

Jun 13, 2026·2 min read

Policy & Credits

California reshapes ethanol market with LCFS updates and E15 approval

California is turning ethanol into a carbon-intensity trade, not just a volume trade, as LCFS feedstock rules and E15 approval reset who can win the state.

Jun 12, 2026·4 min read

Policy & Credits

Senate hearing advances E15 push, 45Z guidance expected soon

Rollins said USDA’s 45Z feedstock guidance is coming quickly, but E15 and the final Treasury rule still leave ethanol and corn plans in limbo.

Jun 12, 2026·2 min read

Policy & Credits

AFPM challenges EPA’s highest-ever renewable fuel volume requirements

AFPM asked a federal court to block EPA’s Set 2 RFS rule, saying two-year compliance could top $106 billion. The case lands before the June 15 start date.

Jun 12, 2026·2 min read