[Peakoil] Ethanol EroEI

[Antony Barry]

I though I'd check on the ERoEI of ethanol. My bad impression is  
based on the use of wheat as the feed stock. Sugar cane looks much  
better. You can ever use the residues to fuel the conversion process  
and fuel power stations  on the side.

 From http://www.energybulletin.net/21064.html

> Ethanol yield (gallons/acre) for sugar cane under good tropical  
> conditions is double that for corn. For all those reasons, sugar  
> cane ethanol is seven times more energy efficient; its net energy,  
> expressed as ERoEI, is 9:1 while corn ethanol has an ERoEI of only  
> 1.3:1.

Tony

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