The Renewable Fuel Standard (RFS) program, created under the Energy Policy Act of 2005, established the first mandatory blend levels for renewable fuel in the United States. The RFS2 encompasses all renewable fuels and requires 4 billion gallons of renewable fuel be blended into transportation fuel in 2006, increasing to 36 billion gallons by 2022 (Figure 1). Most of this is corn-based ethanol, but fuels that reduce more greenhouse gas emissions (GHG), like biodiesel, require 9 billion gallons to be blended into transportation fuel in 2008, increasing to 21 billion gallons by 2022.

Make sure to read the full TechNote online at www.biodiesleducation.org.

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