Crops (1st generation):
Commercially available at scale. Bio feedstocks currently used for production of biobased fuels and chemicals include: corn, sugar cane, sugar beet, wheat and sorghum.
Waste (2nd generation): Pilot and demonstration stage (not commercially available at scale). Bio feedstocks requiring further technical development include: biomass resources from agriculture and forestry.
Non-Food Resources (3rd generation): Concept and pilot stage (not commercially available at scale). Feedstock is from algae, bacteria, etc. grown specifically as a bio resource. Algae is grown with water, CO2 and sunlight and does not require any food source.