What cost, bio/ethanol?
From an OSU study: "Ethanol made from wood cellulose netted 84 percent of its energy after production fuel costs were subtracted. Biodiesel made from canola netted 69 percent of its energy after subtracting production fuel costs. And ethanol made from corn netted a mere 20 percent of its energy after subtracting the energy spent to produce it."
Wind, solar, wave and geothermal (with energy-storage technology) offer the highest opportunities energy for self-sufficiency, without having to "burn stuff", which drives up the price of food & impacts the climate.
Labels: Physics and Facts