Professor Gillingham’s research and teaching interests focus on energy and transportation. He specializes in using the tools of economics and statistics, along with expertise in energy and systems engineering, to rigorously analyze policies to address the great energy challenges facing the world. His work covers the intersection of energy efficiency, new energy technologies, and sustainable transportation. Recent publications have focused on the adoption of solar photovoltaic technology, market failures in household energy efficiency, and alternative fuels for transportation. On-going research delves deeply into the effects of different policies to reduce greenhouse gas emissions from the transportation sector. Other research covers the modeling of energy innovation and technological change, both at the micro-level and in the large-scale energy-climate models used to examine the effects of climate change mitigation policies. Prior to joining the Yale faculty, he worked at the California Air Resources Board, White House Council of Economic Advisers, Stanford Energy Modeling Forum, Resources for the Future, and Joint Global Change Research Institute of Pacific Northwest National Laboratory. He also received a Fulbright Fellowship to study in New Zealand, which he used to research the economics and policy of solar energy technologies in New Zealand. His Ph.D. is from Stanford University, where he studied management science & engineering and economics.