Energy Balance

Does it take more energy to produce ethanol than the energy it provides?

Absolutely not. A 2005 Argonne National Laboratory study concluded that it takes seven-tenths of one unit of fossil energy to make 1 unit of ethanol – a positive net energy balance. In comparison, it takes 1.23 units of fossil energy to make 1 unit of petroleum gasoline. Gasoline requires more than one Btu of energy to deliver one Btu to your car – that’s a negative net energy balance. A 2004 USDA study concluded that ethanol yields 67 percent more energy than is used to grow and harvest the grain and process it into ethanol.

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