In 2008, ethanol production continues its rapid expansion in capacity that began in 2002. The U.S. Department of Energy forecasts that 2009 ethanol production will reach 11 billion gallons, up from 2.1 billion gallons in 2002 (Energy Information Administration, 2008). Plant-level data, as tracked by Ethanol Producer Magazine (2008), suggest that industry capacity may reach as much as 13.2 billion gallons by the end of 2009. Further expansion is possible because the Renewable Fuels Standards of the Energy Independence and Security Act of 2007 mandates the use of 15 billion gallons of starch-based ethanol (largely to come from corn) by 2015. As a co-product of ethanol, distillers grain production tracks the explosive growth in ethanol capacity.