Second generation biofuels' are based on a broader spectrum of feedstock including cellulosic biomass. The aim is to increase efficiency and to reduce competition to food production. The potential feedstocks include waste biomass, the stalks of wheat and corn, wood, and special energy crops (e.g. miscanthus). Main technologies for second generation of biofuels are biomass to liquid (BtL) and cellulosic bioethanol production processes.