How much biofuel is produced in the U.S. today?
According to the Renewable Fuels Association, the U.S. produced 5.4 billion gallons of ethanol in 2007. As of March 2008, U.S. ethanol production capacity was at 7.2 billion gallons, with an additional 6.2 billion gallons of capacity under construction. For biodiesel, annual U.S. production capacity was 2.24 billion gallons as of January 2008, according to the National Biodiesel Board.