The U.S. EPA on May 14 delivered two RFS rulemakings to the White House OMB, beginning the interagency review process. One rule focuses on RFS RVOs and the other focuses on a partial waiver of the 2024 cellulosic RVO.

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.

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..

U.S. EPA Administrator Lee Zeldin on May 14 confirmed the agency will “over the next few months” be completing a rulemaking process to set new Renewable Fuel Standard renewable volume obligations (RVOs).

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.

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.

Draft language for President Trump’s “big, beautiful bill” released by federal lawmakers on May 12 includes language that would update and extend the 45Z clean fuel production tax credit and rescind biofuel funding allocated to the EPA by the IRA.

Alto Ingredients Inc. released first quarter financial results on May 7, reporting improved gross margin and adjusted EBITDA on increased operational uptime, optimization initiatives and increased sales of ISCC-certified fuels.

Green Plains Inc. on May 8 announced that its nine active ethanol plants operated at 100 capacity utilization during the first quarter, with OpEx falling by approximately 3 cents per gallon since late 2024.

Reps. Zach Nunn, R-Iowa, and Nikki Budzinski, D-Ill., on May 7 introduced a bill that aims to update USDA’s Section 9003 program to expand access to grants, streamline loan guarantees and provide $100 million in mandatory funding over five years.