The first thread I've started at this site: I quickly searched here for a thread about biofuel, didn't find one. Thats OK, because beyond its current limited production, I think biofuel is a losing equation because good cropland is to important for other things. 3 numbers: 1 - Typical gross yield of biofuel from a good acre per year - about 1.5 barrels of oil equivalent with the net yield after accounting for the fuel needed to grow and process the biomass being about one barrel of biofuel per acre of good cropland per year. 2 - Acres of good cropland in the United states - about 500,000,000. 3 - US oil consumption per year - about 7 billion barrels. OK, if all the US cropland was used to grow biomass to convert to biofuel, less than 10% of the current US demand could be supplied.