Tilting at Windmills, part of a special report on Investing in Clean Energy
Article mentions the biofuels subsidy study done by Earth Track for IISD's Global Subsidies Initiative.
..."Other government policies ensure that making ethanol from corn is a lucrative business, despite lingering concerns that the manufacturing process consumes almost as much energy as the resulting fuel provides, so that the effort does no good for the environment or the cause of energy independence. Farmers receive subsidies for growing corn, refineries for mixing it into fuels, service stations for installing pumps to sell it and consumers for buying it. Moreover, several states have laws requiring that a certain amount of ethanol is mixed into petrol, helping to bolster demand. A recent study by the Global Subsidies Initiative, a pressure group, estimated that all this will cost American taxpayers at least $5 billion this year..."