statemachine writes: The USDA and farmers took part in a 5 year study of switchgrass, a native grass to North America. "Switchgrass ethanol delivers 540 percent of the energy used to produce it, compared with just roughly 25 percent more energy returned by corn-based ethanol according to the most optimistic studies." The U.S. government is also partially funding six cellulosic ethanol refineries, the first of which will be built in Soperton, GA.
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