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Pursuit of sustainable transportation systems and energy systems requires evaluation of them in a holistic way with life-cycle analysis (LCA). LCA becomes especially important as alternative transportation fuels and new energy systems are being promoted to reduce greenhouse gas emissions and urban air emissions. In fact, LCA of transportation fuels and vehicle systems has a history of more than 30 years. Over this period, LCA methodologies have evolved and critical data have become readily available. This is especially true in the past ten years when LCA has been applied extensively to evaluation of new transportation fuels such biofuels, hydrogen, and electricity and advanced vehicle technologies such as plug electric vehicles and fuel-cell vehicles. Since 1995, Argonne National Laboratory has been developing the Greenhouse gases, Regulated Emissions, and Energy use in Technologies (GREET) model for LCA of transportation fuels and energy systems. The most recent GREET version – GREET2020 – was released in October 2020. At present, GREET has more than 43,000 registered users worldwide. This presentation will cover 1) GREET LCA modeling approach; 2) key data sources; 3) key issues affecting LCA results, and 4) LCA results for electricity from various sources, biofuels from different feedstocks, and hydrogen from different energy resources.
Michael Wang is a Distinguished Fellow and director of the Systems Assessment Center, Energy Systems Division at Argonne National Laboratory. Dr. Wang leads the ongoing development of Argonne's GREET software model for life cycle analysis of vehicle technologies and transportation fuels. The GREET model and its results have been used by regulatory agencies such as the California Air Resources Board and the U.S. Environmental Protection Agency to develop automotive fuel regulations, as well as by the International Civil Aviation Organization and Environment and Climate Change Canada. Dr. Wang holds a PhD and MS in Environmental Science from University of California at Davis, and a BS in Agricultural Meteorology from the China Agricultural University, Beijing. He was named recently in Reuters' Hot List of the world's most influential climate scientists.
ALL Seminar attendees agree not to cite, quote, copy, or distribute material presented without the explicit written consent of the seminar presenter. Any opinions expressed in this seminar are those of the speaker alone and do not necessarily reflect the opinions of NOAA or CSL.
