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The energy balance of corn ethanol: An update

Dates

Year
2002

Citation

Shapouri, H., Duffield, J.A., and Wang, M., 2002, The energy balance of corn ethanol: An update: United States Department of Agriculture, 20 p.

Summary

Studies conducted since the late 1970s have estimated the net energy value (NEV) 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 NEV of corn ethanol has been rising over time 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 output:input ratio of 1.34.

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  • Western Energy Citation Clearinghouse

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Type Scheme Key
DOI WECC []

WECC Extension

places
nameWashington, D.C.
typePublication City

Citation Extension

citationTypeReport
parts
typePages
value20

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