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

HF Sinclair sues EPA over delayed biofuel waiver decisions

HF Sinclair sued EPA over delayed small-refinery waiver decisions as the agency kept working through a backlog that has swung 14 of 16 recent rulings.

Jul 26, 2026·2 min read

Policy & Credits

Wisconsin ethanol plant wins approval for biofuel credits

A Wisconsin ethanol plant won approval to generate biofuel credits, adding compliance value beyond fuel sales. EPA’s pathway list sets the federal framework for RIN-eligible gallons.

Jul 26, 2026·1 min read

Policy & Credits

EPA’s renewable fuel standard shapes U.S. gas prices and ethanol demand

Washington can move pump economics through the RFS, but the first reaction is in RIN prices and blending, not an instant change at the station.

Jul 26, 2026·4 min read

Policy & Credits

USDA seeks AI partners to speed crop innovation and plant science

USDA asked universities and farm stakeholders to build AI tools from germplasm data, aiming to speed crop innovation for biofuel feedstocks.

Jul 25, 2026·1 min read

RNG/Biogas

California RNG credits hinge on credible methane measurement and MRV

California’s LCFS amendments put RNG value on methane MRV, where disputed avoided-methane baselines can flip carbon intensity scores deep into the negative.

Jul 24, 2026·3 min read

RNG/Biogas

Flogas signs biomethane deal with College Group in Ireland

Flogas locked in 26 GWh a year of Irish biomethane from College Group, a deal tied to more than 6,600 tonnes of carbon savings.

Jul 24, 2026·2 min read

Policy & Credits

Merkley, Bentz bill would expand renewable biomass definition for RFS

Merkley and Bentz backed a bill to widen RFS biomass eligibility, aiming new demand at forestry byproducts and wildfire reduction.

Jul 24, 2026·1 min read

Policy & Credits

Biofuels sector faces policy shifts, trade disruption and rapid innovation in 2026

EPA’s final 2026-2027 RFS rule and Brazil’s Fuel of the Future law are redrawing biofuels margins, while feedstock scarcity and import rules decide who scales.

Jul 24, 2026·3 min read

RNG/Biogas

Waga Energy secures €128 million green loan to expand European growth

Waga Energy locked in a €128 million, 10-year green loan to refinance about twenty WAGABOX units and fund projects in France, Spain and Italy.

Jul 24, 2026·1 min read

Policy & Credits

Biofuels deliver climate promise and tradeoffs, explainer shows

Biofuels can lower transport emissions, but feedstock choice and land use decide the climate math. EPA’s RFS history shows why the sector stays contested.

Jul 24, 2026·3 min read

Policy & Credits

Ten EU countries urge rethink of carbon price on transport fuel

Ten EU states, including Italy and Poland, pushed Brussels to rethink ETS2 fuel pricing as the bloc keeps a 2027 start date on the books.

Jul 24, 2026·2 min read

Policy & Credits

45Z credit rules may favor big biofuel producers over smaller rivals

Auditable carbon-intensity data is becoming the real gatekeeper under 45Z, and smaller plants may be pushed into lower-value default credits.

Jul 22, 2026·4 min read

Policy & Credits

Kiley introduces tax credit bill for new biomass facilities

Kiley’s biomass bill would cover 30% of construction costs and let new plants stack an existing production credit, a rare federal push for forest residue buildout.

Jul 22, 2026·1 min read

Policy & Credits

US domestic renewable diesel output drives record biofuel credit generation

U.S. biomass-based diesel production hit 4.7 billion gallons in 2024, lifting RFS credit generation even as imports and weaker 2025 output complicated the outlook.

Jul 20, 2026·2 min read

Policy & Credits

Court ruling fuels backlash over India’s E20 ethanol policy

A Raipur court ordered Maruti Suzuki to replace a car in India’s first reported E20 damage case, intensifying complaints over mileage and owner rights.

Jul 20, 2026·2 min read

Policy & Credits

Corn growers see new demand boost from 45Z tax credit

Treasury’s February 4 45Z proposal could open new corn demand, but the premium still depends on carbon-intensity scoring and ethanol plant monetization.

Jul 19, 2026·3 min read

Policy & Credits

US biofuel credits plunge as diesel rally and Iran tensions return

U.S. biodiesel imports averaged 2,000 barrels a day in 1H 2025, even as Iran tensions lifted diesel and jet fuel prices.

Jul 19, 2026·2 min read

Policy & Credits

Sorghum producers see biofuels as key growth opportunity

NSP backed USDA’s Regenerative Feedstock Rule as Farm Progress pegged sorghum’s advanced biofuel premium at 30 cents per bushel.

Jul 19, 2026·1 min read

Policy & Credits

Biofuels can worsen climate change, Vox reports

EPA's 2023-2025 RFS rule kept billions of gallons in play as lifecycle studies tied corn ethanol to higher emissions and land-use change.

Jul 19, 2026·1 min read

Policy & Credits

India's new fuel norms set to favor ethanol cars

India’s draft CAFE-III norms give ethanol-compatible cars a new credit path, while E20 backlash shows mileage will still shape demand.

Jul 19, 2026·4 min read

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