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Estimating the Net Energy Balance of Corn Ethanol

Listed author(s):
  • Shapouri, Hosein
  • Duffield, James A.
  • Graboski, Michael S.
Registered author(s):

    Studies conducted since the late 1970's have estimated the net energy value of corn ethanol. However, variations in data and assumptions used among the studies have resulted in a wide range of estimates. This study identifies the factors causing this wide variation and develops a more consistent estimate. We conclude that the net energy value of corn ethanol has become positive in recent years due to technological advances in ethanol conversion and increased efficiency in farm production. We show that corn ethanol is energy efficient as indicated by an energy ratio of 1.24.

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    File URL: http://purl.umn.edu/34005
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    Paper provided by United States Department of Agriculture, Economic Research Service in its series Agricultural Economics Reports with number 34005.

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    Date of creation: 1995
    Handle: RePEc:ags:uerser:34005
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    1. Dovring, Folke & McDowell, Donald R., 1980. "Energy Used for Fertilizers," Illinois Agricultural Economics Staff Paper 243896, University of Illinois at Urbana-Champaign, Department of Agricultural and Consumer Economics.
    2. Marland, G. & Turhollow, A.F., 1991. "CO2 emissions from the production and combustion of fuel ethanol from corn," Energy, Elsevier, vol. 16(11), pages 1307-1316.
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