Novozymes, the worlds leading biotech-based enzyme company, based in Denmark; and NREL announced on April 14 that they had achieved a 30:1 reduction in the cost of an enzyme to U.S. $0.10-0.18 per gallon of ethanol. This means that enzymes are no longer the main economic barrier in producing ethanol from biomass. This enzyme makes possible using biomass, specifically corn stover (the whole corn plant), rather than just the corn kernels, in producing ethanol. This combined with NREL improvements in the pretreatment process will make commercial ethanol plants able to produce ethanol at significantly lower costs than now possible. The enzyme will be tested on a pilot plant scale in 2006. Much work remains to develop commercial production of the enzyme, to develop a collection and processing system for the corn stover and to optimize yeast organisms to ferment cellulose based feedstocks.