An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Renewable Fuel Standard Program

2013 Cellulosic Biofuel Standard: Direct Final Rule

On this page:

Rule Summary

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.

EPA is taking direct final action to revise the 2013 cellulosic biofuel standard. This action follows from EPA having granted the American Petroleum Institute’s and the American Fuel and Petrochemical Manufacturers’ petitions for reconsideration of the 2013 cellulosic biofuel standard published on August 15, 2013.

On reconsideration, section 211(o) of the Clean Air Act directs EPA to base the standard on the lower of “projected” production of cellulosic fuel in 2013 or the cellulosic biofuel target established in the statute. Since data are available to show actual production volumes for 2013, EPA’s “projection” and direct final rule are based on actual cellulosic biofuel production in 2013. Specifically, we are calculating the volume of cellulosic biofuel to be used in 2013 by reference to the actual number of cellulosic biofuel renewable identification numbers (RINs) generated and reported through EPA’s Monitored Transaction System (EMTS) in 2013.

EPA is also publishing a separate document that will serve as the proposed rule to revise the 2013 cellulosic standard if adverse comments are received on the direct final rule. If no adverse comments are received, EPA will take no further action on the proposed rule.

Additional Resources