An ethanol industry official says full-scale commercialization of E-15 is probably years off - but cellulosic ethanol - seen as a key safety valve to meet the nation’s Renewable Fuels Standard - may be just around the corner. Last week’s EPA denial of an RFS waiver request by the livestock industry and several Governors did nothing to end their fight with ethanol producers over high grain prices. EPA says the petitioners couldn’t prove such harm and a waiver would provide little relief. More non-corn ethanol could ease the fight - but that will take time - though Renewable Fuels Association President Bob Dinneen expects some mass production next year