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Grassley presses Bessent on 45Z regulations

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By Erin Voegele

6 minutes ago

Policy Sustainable Aviation Fuels 

U.S. Treasury Secretary Scott Bessent on June 12 committed to implementing upcoming changes to the 45Z clean fuel production credit “in the most robust way” and ensuring foreign actors do not have a backdoor into the program.

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In May, U.S. Grains Council Chairwoman Verity Ulibarri and USGC President and CEO Ryan LeGrand traveled to Beijing and Hong Kong, China to meet with key industry counterparts and join the USDA’s Agribusiness Trade Mission.

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Total U.S. biofuels production, including ethanol, renewable diesel, biodiesel and other biofuels, including SAF, averaged a record 1.39 million barrels per day last year, according to data released by the U.S. EIA on June 9.

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SkyNRG on June 5 released its fifth Sustainable Aviation Fuel Market Outlook. The report, developed in collaboration with ICF, highlights the need to scale up technologies and feedstocks that are an alternative to HEFA fuels.

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More than a dozen trade groups representing U.S. fuel producers on June 6 wrote to leaders of the U.S. Senate urging them to amend the “One Big, Beautiful Bill” text to clarify the qualified sales provisions of the 45Z clean fuel production credit.

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Enersur S.A. has selected Praj Industries to develop an integrated biorefinery project in Paraguay. The biorefinery will produce ethanol, distillers dried grains with solubles (DDGS), corn oil, biogas, biobitumen and SAF.

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Legislation pending in Nevada aims to create a sustainable aviation fuel (SAF) incentive fund that would provide an incentive of $2.50 per gallon to domestic air carriers to support the purchase of SAF produced within the state.

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LanzaJet and ATOBA Energy have signed a memorandum of understanding (MOU) to collaborate on accelerating sustainable aviation fuel (SAF) deployment and creating new commercial models for the market.

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The U.S. Department of Energy on May 30 released an updated version of its 45ZCF-GREET modeling tool to account for new feedstocks and methods of production, including ethanol from corn wet-milling and natural gas from coal-mine methane.

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Biomass Magazine has announced the dates for the 19th annual International Biomass Conference & Expo. The event is scheduled to be held March 31-April 2, 2026, in Nashville, Tennessee, at the Gaylord Opryland Resort & Convention Center.

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Iowa state lawmakers in May approved tax legislation that, in part, aims to create a tax credit to incentivize sustainable aviation fuel (SAF) production within the state. The bill is now under consideration by Iowa Gov. Kim Reynolds.

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Virgin Australia and Boeing on May 22 released a report by Pollination on the challenges and opportunities of an International Book and Claim system for sustainable aviation fuel (SAF) accounting.

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The U.S. House of Representatives early on May 22 narrowly passed a reconciliation bill that includes provisions updating and extending the 45Z clean fuel production tax credit. The bill, H.R. 1, will now be considered by the U.S. Senate.

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A bill to formally adopt a revenue certainty mechanism to support the production of SAF was introduced in the U.K. Parliament on May 14. The proposed scheme is in the form of a guaranteed strike price.

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Delta Air Lines on May 7 announced its strong support for new bipartisan, bicameral legislation that will accelerate the growth of sustainable aviation fuel (SAF) in Michigan. The bill aims to create a SAF tax credit of up to $2 per gallon.

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The U.S. EPA on May 15 released data showing nearly 1.79 billion RINs were generated under the RFS in April, down from 2.09 million generated during the same month of last year. Total RIN generation for the first four months of 2025 was 7.12 billion.

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The House Ways and Means Committee on May 14 advanced its portion of President Trump’s “big, beautiful” tax bill. The draft legislation amends and extends the 45Z clean fuel production credit but repeals several other clean energy tax credits..

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Gevo Inc. CEO Patrick Gruber discussed plans for a proposed 30 MMgy alcohol-to-jet (ATJ) project in North Dakota during the company’s first quarter earnings call, held May 13. The company has not disclosed a timeline for development of the project.

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Aemetis Inc. released Q1 results on May 8, reporting increased biogas production, progress with efficiency improvements at the Keyes ethanol plant, and resumed biodiesel deliveries. Financing activities are also underway for a proposed SAF project.

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Wheels Up Experience Inc. on May 6 announced the launch of its new SAF program, under which Wheels Up will partner with Delta Air Lines to purchase SAF, allowing private fliers to participate regardless of their flight operator or departure airport.

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LanzaJet and BioD have launched a feasibility study to develop the first sustainable aviation fuel (SAF) production plant in Colombia. The proposed facility would utilize LanzaJet’s alcohol-to-jet (ATJ) technology.

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On May 6, the Sustainable Aviation Buyers Alliance released a request for proposal (RFP) to increase the supply of next-generation sustainable aviation fuel (SAF), including power-to-liquids and those using advanced biobased feedstocks.

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North Dakota Gov. Kelly Armstrong on April 15 signed a bill creating a low-carbon fuels fund that is designed to help the state’s ethanol producers lower the CI of the fuel they produce, which could help producers participate in the SAF market.

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Valero Energy Corp. released Q1 financial results on April 24, reporting that a tough margin environment negatively impacted the company’s renewable diesel operations during the three-month period. Valero’s ethanol segment was profitable.

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In a rapidly evolving energy landscape, the 41st International Fuel Ethanol Workshop & Expo will return June 9–11 to the CHI Health Center in Omaha, Nebraska. The event is recognized as the largest and longest-running ethanol conference in the world.

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Technip Energies has been awarded a front-end engineering design (FEED) contract by Jet Zero Australia Pty Ltd (Jet Zero) for Project Ulysses, a bioethanol to sustainable aviation fuel (SAF) project located in Townsville, Australia.

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Gevo Inc. and Future Energy Global have signed a pioneering offtake agreement for carbon abatement attributes, to enable airlines and other companies to reduce their CO2 emissions through sustainable aviation fuel (SAF).

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Virgin Australia and Qatar Airways have agreed to work together with Renewable Developments Australia to become key partners on a project that will set out to deliver a homegrown SAF production facility in Australia.

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Lawmakers in Wisconsin on April 3 announced their intent to introduce legislation that would create a $1.50 per gallon production tax credit for SAF. The bill is currently circulating for co-sponsorship support and will be formally introduced soon.

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Jet Zero Australia Pty Ltd has announced a FEED contract with Technip Energies and continuation of the owner’s engineering services contract with Long Energy & Resources for an ethanol-to-SAF project that will use LanzaJet technology.

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