In addition, several types of biofuels are currently under development that could become available in the mid or long term. Most of these technologies use lignocellulosic biomass (“second generation”) in the form of wood residues, paper waste, agricultural waste, and dedicated energy crops. Feedstocks of this type are far larger and are expected to be more “sustainable,” because of higher yields, lower net greenhouse gas emissions, and a lack of competition with food production.
Currently, creating biofuels from algae (hydro-cultures that could provide high yields of oil) is gaining interest. Test flights of planes with biofuels (in at least one case originating from algae) have been performed.