Publication Details

Title : Updated Vehicle Specifications in the GREET Vehicle-Cycle Model
Publication Date : July 30, 2012
Revision Date : July 30, 2012
Authors : A. Burnham
Abstract : Alternative transportation fuels and advanced vehicle technologies are being promoted to help reduce local air pollution, greenhouse gas emissions, and the United States dependence on imported oil. To more accurately and completely evaluate the energy and emissions effects of alternative fuels and vehicle technologies, researchers should consider emissions and energy use from vehicle operations, fuel production processes, and vehicle production processes. This research area is especially important for technologies that employ fuels and materials with distinctly different primary energy sources and production processes, i.e., those for which upstream emissions and energy use can be significantly different. The GREET (Greenhouse gases, Regulated Emissions, and Energy use in Transportation) model was originally developed to evaluate fuel-cycle (or well-to-wheels) energy use and emissions of various transportation technologies (Wang 1999). In 2006, the GREET vehicle-cycle model was released to examine energy use and emissions of vehicle production and disposal processes (Burnham et al. 2006). This document updates the key vehicle specifications in Burnham et al. (2006) for the latest publically available version, GREET2_2012, of the vehicle-cycle model. In addition to the parameters described in this document, GREET2_2012 includes updated data on production and recycling of lithium-ion batteries, material production of several key vehicle materials, and part manufacturing and vehicle assembly (Dunn et al. 2012; Keoleian et al. 2012; Sullivan et al. 2010).

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