Rather, the agency set ethanol requirements higher and higher with no apparent regard for falling U.S. gasoline consumption, allowing the RFS to drive the country headlong toward the «ethanol blend wall» — and potential harms from forcing more ethanol into the fuel supply than it can safely absorb. (energytomorrow.org)
In anticipation of increased ethanol requirements the RIN cost skyrocketed because there is limited production capacity due to the wording of the mandate which is the RFS. (judithcurry.com)
In 2012, more than 40 % of the U.S. annual corn supply was to be used to meet the RFS corn based ethanol requirements established annually by the EPA. (globalwarming.org)