Dr. Mueller leads the Bioenergy and Transportation Emissions Research Group at the University of Illinois at Chicago. Selected research activities focus on life cycle emissions analyses of different bioenergy and electric vehicle pathways as well as the quantification of emissions and sequestration effects from production agriculture and finally the certification of sustainable energy supply chains.
Dr. Mueller has published over 30 peer reviewed papers on life cycle analysis and he is a co-author of the land use change interface of the Argonne National Laboratory GREET model. Steffen served on the Expert Working Group on Land Use during the establishment of the California Low Carbon Fuel Standard. In 2021, he served on the National Academies of Sciences Committee on Current Methods for Life Cycle Analyses of Low-Carbon Transportation Fuels and since 2013 Steffen has been serving on the Board of International Sustainability and Carbon Certification (ISCC). Steffen holds a PhD in Energy Policy from the University of Illinois at Chicago, an MBA and a B.S. in Environmental Engineering from Karlsruhe, Germany.