Fuels and Fuel Additives
Renewable Fuel Standard (RFS)
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EPA is responsible for developing and implementing regulations to ensure that transportation fuel sold in the United States contains a minimum volume of renewable fuel. The Renewable Fuel Standard (RFS) program regulations were developed in collaboration with refiners, renewable fuel producers, and many other stakeholders.
The RFS program was created under the Energy Policy Act (EPAct) of 2005, and established the first renewable fuel volume mandate in the United States. As required under EPAct, the original RFS program (RFS1) required 7.5 billion gallons of renewable- fuel to be blended into gasoline by 2012.
Under the Energy Independence and Security Act (EISA) of 2007, the RFS program was expanded in several key ways:
- EISA expanded the RFS program to include diesel, in addition to gasoline;
- EISA increased the volume of renewable fuel required to be blended into transportation fuel from 9 billion gallons in 2008 to 36 billion gallons by 2022;
- EISA established new categories of renewable fuel, and set separate volume requirements for each one.
- EISA required EPA to apply lifecycle greenhouse gas performance threshold standards to ensure that each category of renewable fuel emits fewer greenhouse gases than the petroleum fuel it replaces.
RFS2 lays the foundation for achieving significant reductions of greenhouse gas emissions from the use of renewable fuels, for reducing imported petroleum, and encouraging the development and expansion of our nation's renewable fuels sector.
For information on 15 % volume of ethanol in gasoline (E15), please visit the E15 webpage. For all 40 CFR Part 79 waiver notices including those related to E15, please visit the Fuels and Fuel Additives Registration Notices page.
For information on new fuel pathway determinations under the RFS (i.e. petitions for new fuel types, production processes, or feedstocks), please visit the Guidance on New Fuel Pathway Approval Process page.
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If you have questions or request information, please contact the appropriate support or help line found on the Support & Help page.
Please visit EPA's Transportation and Air Quality web-based repository of mobile source documents, Document Index System (DIS). This searchable repository contains regulations, Federal Register notices, policy letters, and guidance documents.
Please visit our Related Links page for other fuel related information within EPA, other U.S. Agencies, and other fuel related websites.