Hello to all,
You might find the following study of interest:
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Estimating the Net Energy Balance of Corn Ethanol
An Economic Research Service Report
by Hosein Shapouri, James A. Duffield and Michael S. Graboski
United States Department of Agriculture
Agricultural Economic Report Number 721
July 1995
Estimating the Net Energy Balance of Corn Ethanol. By Hosein Shapouri,
James A. Duffield, and Michael S. Graboski. U.S. Department of Agriculture,
Economic Research Service, Office of Energy and New Uses. Agricultural
Economic Report No. 721
Abstract
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.
For the complete study, go to:
http://www.ethanol-gec.org/corn_eth.htm
Joel
Joel Gruver
Visiting Faculty
Principia College
Elsah, Illinois 62028
(618) 374 - 5289
jgruver@principia.edu
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