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One major drawback with corn ethanol, is the energy returned on energy invested , meaning the energy outputted in comparison to the energy required to output that energy. Compared to oil, with an 11:1 EROI, corn ethanol has a much lower EROI of 1.5:1, which, in turn, also provides less mileage per gallon compared to gasoline. [7]
In Brazil where sugar cane is used, the yield is higher, and conversion to ethanol is more energy efficient than corn. Recent developments with cellulosic ethanol production may improve yields even further. [12] In 2006 a study from the University of Minnesota found that corn-grain ethanol produced 1.25 units of energy per unit put in. [13]
The ethanol and corn industries on Thursday slammed an advisory board to the U.S. Environmental Protection Agency for a draft report that found there could be little climate benefit to using corn ...
Corn ethanol production is capped at 15 billion gallons per year under the current RFS, which, given land and irrigation constraints, is a good ceiling. A problem arises when you consider that the ...
For each billion ethanol-equivalent gallons of fuel produced and combusted in the US, the combined climate-change and health costs are $469 million for gasoline, $472–952 million for corn ethanol depending on biorefinery heat source (natural gas, corn stover, or coal) and technology, but only $123–208 million for cellulosic ethanol ...
Since the 1970s, the U.S. has subsidized ethanol produced from food crops, especially from corn, thus providing a homegrown, alternative fuel source for our automobiles. But for multiple reasons ...
In addition to being used as food, corn is a source of ethanol fuel, and the NCGA has provided standards and guidelines for farmers growing ethanol. [4]The NCGA has also advocated for continued support and subsidies from the United States government for the ethanol fuel program, citing studies on the benefits for fighting climate change of switching away from fossil fuels towards ethanol.
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