The American Petroleum Institute filed a lawsuit September 18 in the U.S. Court of Appeals for the District of Columbia Circuit challenging the Environmental Protection Agency’s 2012 cellulosic ethanol requirements set under the renewable fuel program. The group argued that the agency’s projections for cellulosic biofuels are unrealistic, as they require refiners to blend 8.65 million gallons of cellulosic biofuel into the national gasoline supply this year even though only 20,069 gallons have thus far been produced. Refiners will be required to pay penalties for not purchasing the biofuel, even though it is not commercially viable.