Renewable Fuel Standard (RFS) Program: Standards for 2026 and 2027, Partial Waiver of 2025 Cellulosic Biofuel Volume Requirement, and Other Changes

Abstract

Under the Clean Air Act (CAA), the U.S. Environmental Protection Agency (EPA) is required to determine the applicable volume requirements for the Renewable Fuel Standard (RFS) for years after those specified in the statute. The EPA is establishing the applicable volumes and percentage standards for 2026 and 2027 for cellulosic biofuel, biomass-based diesel (BBD), advanced biofuel, and total renewable fuel. The EPA is also partially waiving the 2025 cellulosic biofuel volume requirement and revising the associated percentage standard due to a shortfall in cellulosic biofuel production. Finally, the EPA is promulgating several regulatory changes to the RFS program, including removing renewable electricity as a qualifying renewable fuel under the RFS program (eRINs) and making minor revisions to the biogas provisions of the RFS program.

Action & Dates

Action: Final rule.
Dates: This rule is effective on June 15, 2026, except for amendatory instruction 47, which is effective on April 28, 2026, and amendatory instruction 17, which is effective on January 1, 2027. The incorporation by reference of certain publications listed in this regulation is approved by the Director of the Federal Register as of June 15, 2026.
Effective Date: 2026-06-15

CFR References

40 CFR Part 63 40 CFR Part 80 40 CFR Part 1090

Topics

Administrative practice and procedureAir pollution controlDiesel FuelEnvironmental protectionFuel additivesGasolineImportsIncorporation by referenceOil importsPetroleum

Document Excerpt

Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Environmental Protection Agency 40 CFR Parts 63, 80, and 1090 [EPA-HQ-OAR-2024-0505; FRL-11947-02-OAR] RIN 2060-AW23 ( printed page 16388) AGENCY: Environmental Protection Agency (EPA). ACTION: Final rule. SUMMARY: Under the Clean Air Act (CAA), the U.S. Environmental Protection Agency (EPA) is required to determine the applicable volume requirements for the Renewable Fuel Standard (RFS) for years after those specified in the statute. The EPA is establishing the applicable volumes and percentage standards for 2026 and 2027 for cellulosic biofuel, biomass-based diesel (BBD), advanced biofuel, and total renewable fuel. The EPA is also partially waiving the 2025 cellulosic biofuel volume requirement and revising the associated percentage standard due to a shortfall in cellulosic biofuel production. Finally, the EPA is promulgating several regulatory changes to the RFS program, including removing renewable electricity as a qualifying renewable fuel under the RFS program (eRINs) and making minor revisions to the biogas provisions of the RFS program. DATES: This rule is effective on June 15, 2026, except for amendatory instruction 47, which is effective on April 28, 2026, and amendatory instruction 17, which is effective on January 1, 2027. The incorporation by reference of certain publications listed in this regulation is approved by the Director of the Federal Register as of June 15, 2026. ADDRESSES: The EPA has established a docket for this action under Docket ID No. EPA-HQ-OAR-…

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Citation: 91 FR 16388