Grains from cereals should continue to serve as a major source for food and feed. Cereal straw combined with rice straw and maize husks constitutes one of the principal biomass sources arising from present agricultural activities in Europe. This represents a large potential resource for utilization as energy feedstocks. Although there are some plans to use cereals as an energy source, the main justifications are overproduction of cereals and advanced technology in seed production, tillage, sowing, harvesting, baling and storage. Cereal crops that are whole crop harvested may be used under certain circumstances as energy crops.