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On April 1, 2026, the U.S. Environmental Protection Agency (EPA) issued a final rule establishing the applicable volumes and percentage standards for 2026 and 2027 for cellulosic biofuel, biomass-based diesel (BBD), advanced biofuel, and total renewable fuel. 91 Fed. Reg. 16388. The Renewable Fuel Standard (RFS) “Set 2” final rule also partially waives the 2025 cellulosic biofuel volume requirement and revises the associated percentage standard due to a shortfall in cellulosic biofuel...

Senator Chuck Grassley (R-IA) announced on October 2, 2025, that he led over 45 Senate and House colleagues in urging the U.S. Environmental Protection Agency (EPA) to issue a final rule on imported Renewable Identification Numbers (RIN) and hold firm on the proposed biomass-based diesel volumes. As reported in our June 18, 2025, blog item, the proposed rule would reduce the number of RINs generated for imported renewable fuel and renewable fuel produced from foreign feedstocks. The bipartisan,...

As reported in our June 18, 2025, blog item, the U.S. Environmental Protection Agency (EPA) proposed in June 2025 the applicable volumes and percentage standards for 2026 and 2027 for cellulosic biofuel, biomass-based diesel (BBD), advanced biofuel, and total renewable fuel. On September 18, 2025, EPA issued a supplemental notice of proposed rulemaking (SNPRM) that revises the proposed Renewable Fuel Standard (RFS) “Set 2” renewable volume obligations (RVO) for 2026 and 2027 to account for...

The Clean Air Act (CAA) requires the U.S. Environmental Protection Agency (EPA) to determine the applicable volume requirements for the Renewable Fuel Standard (RFS) for years after those specified in the statute. On June 17, 2025, EPA proposed the applicable volumes and percentage standards for 2026 and 2027 for cellulosic biofuel, biomass-based diesel (BBD), advanced biofuel, and total renewable fuel. 90 Fed. Reg. 25784. EPA notes that the proposed rule also includes a number of regulatory...

The U.S. Environmental Protection Agency (EPA) issued a final rule on March 14, 2025, extending the Renewable Fuel Standard (RFS) compliance reporting deadline for the 2024 compliance year. 90 Fed. Reg. 12109. As reported in our January 8, 2025, blog item, EPA published a proposed rule on December 12, 2024, that would partially waive the 2024 cellulosic biofuel volume requirement and revise the associated percentage standard under the RFS program due to a shortfall in cellulosic biofuel...

The U.S. Environmental Protection Agency (EPA) announced on January 21, 2025, the availability of a final document entitled “Biofuels and the Environment: Third Triennial Report to Congress” (Third Report). 90 Fed. Reg. 7135. The document was prepared by EPA’s Offices of Research and Development (ORD) and Air and Radiation (OAR), in consultation with the U.S. Departments of Agriculture (USDA) and Energy (DOE). The Third Report builds on the first and second triennial reports, released in...

On January 8, 2025, the U.S. Department of Energy’s (DOE) Bioenergy Technologies Office (BETO) and the U.S. Environmental Protection Agency (EPA) announced $6 million in funding for three projects that will advance biofuel development and support U.S. leadership in energy and emissions innovation. According to BETO, the projects will support research to improve performance and reduce costs of high-impact biofuel production technologies; scale up production systems with industry; and support...

The U.S. Environmental Protection Agency (EPA) published a proposed rule on December 12, 2024, that would partially waive the 2024 cellulosic biofuel volume requirement and revise the associated percentage standard under the Renewable Fuel Standard (RFS) program due to a shortfall in cellulosic biofuel production. 89 Fed. Reg. 100442. As a result of this proposed change, EPA proposes to extend the RFS compliance reporting deadline for the 2024 compliance year. According to the proposed rule, EPA...

The U.S. Environmental Protection Agency (EPA) announced on April 3, 2024, that it has rescheduled its public webinar to discuss the implementation of the Biogas Regulatory Reform Rule (BRRR) provisions promulgated as part of the Renewable Fuel Standard (RFS) final rule for 2023-2025 (the Set Rule) to April 12, 2024. 89 Fed. Reg. 23013. During the webinar, EPA intends to discuss various aspects of the BRRR program, including: The implementation timeline for BRRR; An implementation overview of...

The U.S. Environmental Protection Agency (EPA) will host a public webinar on April 4, 2024, to discuss the implementation of the Biogas Regulatory Reform Rule (BRRR) provisions promulgated as part of the Renewable Fuel Standard (RFS) final rule for 2023-2025 (the “Set Rule”). 89 Fed. Reg. 15988. EPA states that these regulatory provisions include registration and reporting and updated regulatory provisions for the production, distribution, and use of biogas as a renewable fuel. During the...