Recently the ethanol industry has “suffered” from a problem that epitomizes the problematic nature of government subsidies. Known as the “blend wall” this obstacle was created not by negligence on the part of the industry, but by the fact that its lobbying efforts have been far more effective than its marketing efforts. The problem, in a nutshell, is that the 2007 Renewable Fuel Standard mandates a steady increase in the amount of ethanol blended into the national fuel supply, from 9 billion gallons per year (BGY) in 2008 to 36 BGY in 2022… but with gasoline consumption falling and with standard pump gasoline capped at a maximum of ten percent ethanol (recently raised to 15% for vehicles built after 2007), the industry that’s supposed to get America off gas needs more gas to blend its ethanol into. As a study in the American Journal of Agricultural Economics puts it
Total national consumption of gasoline in the United States has been about 140 billion gallons in 2010 and is expected to fall over time due to increasing fuel economy standards. Thus, at present, if every drop of gasoline were blended as E10, the maximum ethanol that could be absorbed would be 14 billion gallons. In reality, 10% cannot be blended in all regions and seasons. Most experts consider an average blend of 9% to be the effective maximum, which amounts to about 12.6 billion gallons. U.S. ethanol production capacity already exceeds this level. Thus, our ability to consume ethanol has reached a limit called the blend wall.
The solution: well, the EPA’s ruling allowing 15% ethanol blends was supposed to fix the problem, but according to this report, that “fix” would only buy some four years before the industry is back to bumping against the blend wall. The solution?
With ethanol as the primary biofuel and either blend limit (E10 or E15), a substantial increase in E85 would be required to fulfill the mandate.