The efficiency of ethanol plants in the U.S. has increased over the last 20 years to produce up to 2.8 gallons of fuel for every bushel of corn processed. The production of ethanol also produces equal portions of carbon dioxide and high-protein animal feed ingredients.
Just as Lawrence Kazmerski, a top official at the National Renewable Energy Laboratory, was about to give the keynote address at the University of Minnesota's annual E3 conference at the RiverCentre in St. Paul, the lights went out, bathing the audience in darkness and a deep sense of irony.
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