Sandia National Laboratories and General Motors'Global Energy Systems team conducted a joint biofuels systems analysis project from March to November 2008.Known as the 90-Billion Gallon Biofuel Deployment Study,the purpose of the project was to assess the feasibility,implications,limitations,and enablers of large-scale production of biofuels in the United States.Ninety billion gallons of ethanol(the energy equivalent of approximately 60 billion gallons of gasoline)per year by 2030 was chosen as the book-end target to understand the requirements of an aggressive biofuels deployment schedule.Since previous studies addressed the biomass supply potential but not the supply chain rollout needed to achieve large biofuels production targets,the focus of this study was to develop a comprehensive systems understanding of the evolution of the complete biofuels supply chain and key interdependencies over time.
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