Professor Gillingham is the Senior Associate Dean of Academic Affairs at the Yale School of the Environment and a professor of economics at Yale, with a primary appointment at the School of the Environment and secondary appointments in the Department of Economics and School of Management. He is also a faculty research fellow at the National Bureau of Economic Research. In 2015-2016, he served as the Senior Economist for Energy and the Environment at the White House Council of Economic Advisers. He is an energy and environmental economist drawing from the fields of applied microeconomics, behavioral economics, industrial organization, and integrated assessment modeling of climate change. He has published widely on consumer decisions and policy in transportation, energy efficiency, and renewable energy. His work has been published in top-tier journals such as Science, Nature, PNAS, Journal of Political Economy, AEJ: Economic Policy, RAND Journal of Economics, Quantitative Economics, Management Science, Marketing Science, Journal of the Association of Environmental & Resource Economists, and the Journal of Environmental Economics & Management.