GREET Model

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GREET (Greenhouse gases, Regulated Emissions, and Energy use in Transportation) is a full life-cycle model sponsored by the Argonne National Laboratory (U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy). It fully evaluates energy and emission impacts of advanced and new transportation fuels, the fuel cycle from well to wheel and the vehicle cycle through material recovery and vehicle disposal need to be considered. It allows researchers and analysts to evaluate various vehicle and fuel combinations on a full fuel-cycle/vehicle-cycle basis.

The basic implementation of the model was made using Excel spreadsheets. However a more practical and easy to use software is also available.

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For a given vehicle and fuel system, GREET separately calculates the following:

GREET includes more than 100 fuel production pathways and more than 70 vehicle/fuel systems.

Michael Wang, a Senior Scientist in the Energy Systems Division is the primary developer of GREET.

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