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Bush says One Good Thing. - The Life and Thoughts of Zach
Jan. 31st, 2006
10:37 pm -
Bush says One Good Thing.
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February 2nd, 2006 02:32 am (UTC)
The conventional wisdom that ethanol consumes more fuel than it produces is wrong on several counts. The data cited by that argument is from the beginning of the ethanol biofuel industry. Advances in refining have improved efficiency considerably - we currently get about a 1/3 return on the total energy investment.
The data refers to the total energy input, not just the consumption of mechanical fuel. The return on the mechanical fuel investment (fuel for farm machinery, transport, etc.) is about 6:1.
Also, such arguments frequently omit that ethanol production is frequently a by-product or co-product of other materials that produce value for the energy investment.