You may have read articles—perhaps even in Grid—touting biofuels as a viable source to meet our energy needs. However, the science of biofuels points to one conclusion: They just don’t work.
The key concept is energy return on investment. Agrifuels—fuels derived from monocrops like corn or sugar—barely produce more energy than it takes to develop them. It takes at least three-quarters of a gallon of oil to produce a gallon of corn ethanol, reports the nonprofit Post Carbon Institute in their Energy Bulletin. This margin of energy is far too small to enable us to substitute agrifuels for nonrenewable fossil fuels. Without Congressional subsidies, largely going to corporate giants such as ADM and ConAgra to support their profits by boosting the price of corn, ethanol as fuel falls on its face. The petroleum needed to produce ethanol precludes independence from imported oil.