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Net Energy Balance

How is the Net Energy of Ethanol Determined

The amount of energy gained or lost through the production and use of fuel ethanol continues to be questioned. Some recent studies have estimated positive energy gains of 25% to over 100%, while others show a net energy loss.

The variation in the estimated values is typically caused by different methods for the estimation and allocation of energy consumption throughout the production process. More complete analysis of the net energy efficiency of ethanol production include the following when being compared to other fuel sources:

Some links to studies on the net energy balance of ethanol