production of alternative drop-in fuels, especially on the type of incentives necessary for low-carbon biofuels. The models this committee and others have used to analyze the transition to alternative vehicles and/or fuels are first-generation efforts, more useful for understanding processes and their interactions than for producing definitive results.


EIA (Energy Information Administration). 2011. Annual Energy Review 2010. Washington, D.C.: U.S. Department of Energy.

EPA (Environmental Protection Agency). 2012. Inventory of U.S. Greenhouse Gas Emissions and Sinks:1990-2010. Available at

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