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October 24, 2004
The definitive Biodiesel/Petrodiesel lifecycle report (1998)
this report is apparently the latest. Its conclusions are pretty good though:
According to a comparative life-cycle study by the US Department of Energy's National Renewable Energy Laboratory, biodiesel requires only 0.31 units of fossil energy to make 1 unit of fuel.
"By contrast, it takes 1.2 units of fossil resources to produce 1 unit of petroleum diesel," the study says.
We wonder what the energy efficiency figures for biodiesel would be if fossil fuels were eliminated from the equation and the entire production process powered by biofuels, from planting the seeds to filling the tank?
Posted by Martin at October 24, 2004 9:59 PM
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