Amgad Elgowainy, PhD, is a principal energy systems analyst and the Life-Cycle Analysis Team Lead at the Argonne National Laboratory. He conducts techno-economic and environmental analysis of alternative transportation fuels and advanced vehicle technologies. He contributed to the development of the GREET (Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation) suite of models for life cycle accounting of energy and emissions of alternative fuel/vehicle systems. His research, modeling, and analysis cover petroleum and natural gas vehicles, plug-in hybrid and battery electric vehicles, and hydrogen fuel cell vehicles. Elgowainy holds a PhD in mechanical engineering from the State Univ. of New York at Buffalo. He has authored and coauthored over 60 papers and technical publications.