The closed-loop system -- derived from an exclusive patent co-owned by an affiliate of E3 BioFuels -- combines a 25-million-gallon ethanol refinery, beef cattle feedlot, and anaerobic digesters to maximize energy efficiencies unavailable to each component on a stand-alone basis. This system eliminates the potential for manure to pollute watersheds, and it enables the wet distillers grain from ethanol production to be fed on-site to cattle without energy-intensive drying and transportation costs.


In the October edition of Wired Magazine, venture capitalist Vinod Khosla writes, "It may surprise you to learn that the most promising solution to our nation's energy crisis begins in the bowels of a waste trough, under the slotted concrete floor of a giant pen that holds 28,000 ... beef cattle."

Khosla, co-founder of Sun Microsystems, continues, "E3 BioFuels is about to fire up the most energy efficient corn ethanol facility in the country: a $75 million state-of-the-art biorefinery ... The output: a potential gusher of renewable, energy-efficient transportation fuel."