Visiting Scholars


Ari Peskoe

Senior Fellow
Harvard Environmental Policy Initiative

Ari Peskoe is the Senior Fellow in Electricity Law at the Harvard Law School Environmental Law Program Policy Initiative. He has written extensively about electricity regulation, on issues ranging from electric vehicles to Constitutional challenges to states’ energy laws. Prior to the Policy Initiative, Ari was an associate at a law firm in Washington, D.C. where he litigated before the Federal Energy Regulatory Commission about the Western Energy Crisis. Before that, Ari was a Peace Corps Volunteer in Ghana and spent two years trying to bring the 2012 Olympics to New York. He received his J.D. from Harvard Law School and graduated from the University of Pennsylvania with degrees in electrical engineering and business.

Radhika Khosla

Centre for Policy Research in India

Radhika Khosla is a Fellow at the Centre for Policy Research in India. She works on the integrated nature of India’s energy sector to examine the linkages between energy, development and climate change, particularly in urban areas. She also focuses on the demand-side of Indian energy, with attention to the technological, institutional and behavioral aspects of energy use and its lock-in to a rapidly growing built environment. In addition, her work examines the analytic and strategic dimensions of India’s energy and climate policies.

Radhika is a Visiting Scholar at MIT’s Energy Initiative and her other appointments include the India Fellow for the India Centre for Sustainable Development at the University of Oxford. She was Staff Scientist with the Natural Resources Defense Council in New York, where she led research and implementation on building energy policies in Indian states. Radhika holds a PhD in the Geophysical Sciences from the University of Chicago and an undergraduate and master’s degrees in Physics from the University of Oxford.


Jesse Jenkins

Massachusetts Institute of Technology

Jesse Jenkins is a Ph.D. candidate in Engineering Systems at MIT's Institute for Data Systems and Society and a researcher with the MIT Energy Initiative. He earned a S.M. in Technology & Policy at MIT in 2014 and previously directed the Energy and Climate Program at the Breakthrough Institute, a public policy think tank. He has published peer-reviewed papers in the journals Applied Energy, The Energy Journal, Energy Policy, and WIREs: Climate Change. His research and writing has been featured in invited testimony before the US Senate Committee on Energy and Natural Resources and in major media outlets. Jesse has received fellowships from the National Science Foundation, MIT Energy Initiative, and Martin Family Society of Fellows for Sustainability and serves as co-president of MIT’s Electricity Students Research Group.


Joe Aldy

Professor of Public Policy
John F. Kennedy School of Government at Harvard University

Dr. Joe Aldy is an Associate Professor of Public Policy at the John F. Kennedy School of Government at Harvard University, a Visiting Fellow at Resources for the Future, a Faculty Research Fellow at the National Bureau of Economic Research, and a Senior Adviser at the Center for Strategic and International Studies. He is also the Faculty Chair for the Regulatory Policy Program at the Mossavar-Rahmani Center for Business and Government. His research focuses on climate change policy, energy policy, and mortality risk valuation. In 2009-2010, Aldy served as the Special Assistant to the President for Energy and Environment, reporting through both the National Economic Council and the Office of Energy and Climate Change at the White House. Aldy was a Fellow at Resources for the Future from 2005 to 2008 and served on the staff of the President’s Council of Economic Advisers from 1997 to 2000.

He holds a Ph.D. in Economics from Harvard University, a Master of Environmental Management from the Nicholas School of the Environment, and a B.A. from Duke University.

Roberto Schaeffer

Professor of Energy Economics
Federal University of Rio de Janeiro

Dr. Roberto Schaeffer is Professor of Energy Economics in the Energy Planning Program (PPE) of the Federal University of Rio de Janeiro (UFRJ), Brazil. Professor Schaeffer is a member of the Working Group III of the Intergovernmental Panel on Climate Change (IPCC), leader of the Brazilian country team. During the last 15 years, his research has focused on developing the Brazilian integrated assessment energy model.  As a Senior expert on Brazilian energy and climate policies, he regularly advises members of the Brazilian government on energy issues. .. Previously to his current professional position, he was, for two years, between 1991 and 1993, a Visiting Professor at the Center for Energy and the Environment, and a Lecturer at the Wharton School, both at the University of Pennsylvania.

Dr. Schaeffer received a Ph.D. in Energy Management and Policy from the University of Pennsylvania in 1990.


Katherine Smith

Senior Technology and Market Assessor
gemaker, Pty Ltd.

Dr. Katherine Smith is a Senior Technology and Market Assessor for gemaker, an Australian company which works to accelerate the commercialisation of science and technology and to increase the engagement between academia, research and industry. She has twice held posts as a scientific attaché (in nuclear science and technology) for the Australian Government. From 2011 to 2015 she was a Senior Advisor International Relations at the Australian Nuclear Science and Technology Organisation (ANSTO). Dr. Smith has been an active member of a range of committees and panels, including the International Scientific Advisory Panel of the Monash (University) Centre for Electron Microscopy, the Scientific Advisory Committee for the Electron Microscopy Centre at Argonne National Laboratory (chair 2009 – 11), and the American Nuclear Society, International Committee (2009 – 2012). She was previously a Principal Research Scientist at ANSTO, a Lecturer in Applied of Physics at the NSW Institute of Technology.

Smith earned a both a Ph.D. and a B.S. in Physics from Monash University in Australia.

Roger Stern

Assistant Professor of Energy Economics, Policy and Commerce
University of Tulsa, Collins College of Business

Dr. Roger Stern is an Assistant Professor of Energy Economics, Policy and Commerce at the University of Tulsa, Collins College of Business. Dr. Stern’s recent research mainly concerns the intersection of U.S. energy policy, foreign policy, and national security and economic history.  He focuses in the study of mineral scarcity. He has presented seminars to the Office of the Chief of Naval Operations; US Department of State; Council on Foreign Relations Nuclear Security Roundtable; Canadian Security Intelligence Service; King Abdullah Petroleum Science and Research Center and several universities op-ed essays have appeared in The Wall Street Journal, The International Herald Tribune and The National (Abu Dhabi). Following a career in land conservation and environmental policy, Professor Stern pursued his PhD. Before joining the University of Tulsa, he held a Post-doctoral fellowship at Princeton University’s Oil, Energy & the Middle East Program.

Dr. Stern earned a Ph.D. in Geography and Environmental Engineering from Johns Hopkins University, a M.S. from the University of Vermont, and a B.A. from Antioch College.


Jérôme Taillard

Assistant Professor of Finance
Babson College

Dr. Jérôme Taillard is an Assistant Professor of Finance at Babson College in Massachusetts. His main research interests are in corporate finance, with a current focus in areas of risk management, innovation, litigation, corporate governance and the oil and gas industry. He has published his research in the Journal of Corporate Finance and the Journal of Quantitative and Financial Analysis. Prior to completing his PhD, Dr. Taillard served as consultant on risk management. He earned his PhD in Finance from The Ohio State University in 2010.

He received a graduate degree in Economics from the Study Center in Gerzensee (Switzerland) and an undergraduate degree in Mathematics applied to Finance (magna cum laude) from the University of Neuchâtel in Switzerland.

Gilbert E. Metcalf

Professor of Economics
Tufts University

Dr. Gilbert E. Metcalf is a Professor of Economics at Tufts University and a Research Associate at the National Bureau of Economic Research. Metcalf has taught at Princeton University, the Kennedy School of Government, and MIT.  This year he is a Visiting Scholar at Harvard’s Kennedy School of Government.  Metcalf has frequently testified before Congress, served on various national panels for agencies including the National Academies of Sciences and the U.S. Environmental Protection Agency, among others. During 2011 and 2012, he served as the Deputy Assistant Secretary for Environment and Energy at the U.S. Department of Treasury.

Metcalf's primary research area is applied public finance with particular interests in taxation, energy, and environmental economics. His current research focuses on policy evaluation and design in the area of energy and climate change. He has published papers in numerous academic journals, has edited three books, and has contributed chapters to several books on energy and tax policy. Metcalf received a B.A. in Mathematics from Amherst College, an M.S. in Agricultural and Resource Economics from the University of Massachusetts Amherst, and a Ph.D. in Economics from Harvard University.


Christian Gollier

Toulouse School of Economics

Dr. Christian Gollier is Director of the Toulouse School of Economics and the Wesley Clair Mitchell Visiting Research Professor at Columbia University. His research focuses on decision theory under uncertainty, environmental economics, finance, investment, consumption theory, insurance economics, and cost-benefit analysis—with a special interest in long-term (sustainable) effects. He is the author of seven books on risk including The Economics of Risk and Time (MIT Press), winner of the 2001 Paul A. Samuelson Award, and Pricing the Planet’s Future (Princeton UP). He was one of the lead authors of the 2007 and 2013 reports of the Intergovernmental Panel on Climate Change (IPCC). Most recently, jointly with Jean Tirole (2014 Nobel Prize in Economic Sciences), Gollier has made contributions to climate change negotiations through the Harvard Project on Climate Agreements. He has published over 100 articles in top-tier economic journals. He is also associate editor, editor, or co-editor of scientific journals such as the Geneva Papers on Risk and Insurance Theory, the Journal of Risk and Uncertainty, the Journal of Risk and Insurance, and Management Science. Among many prizes and honors, he was awarded a fellowship in the Econometric Society, membership in the Institut Universitaire de France, the Ernst Meyer prize, the Erik Kempe award, and the Prix Edouard Bonnefous.

Gollier earned a Ph.D. in economics  and a B.S. in applied mathematics from Catholic University of Louvain.

Mark Jacobsen

Associate Professor of Economics
University of California, San Diego

Dr. Mark Jacobsen is Associate Professor of Economics at the University of California, San Diego and a Research Associate at the National Bureau of Economic Research. His research focuses on environmental regulation and taxes and addresses two main themes: environmental regulation of transportation and the automobile industry, and optimal environmental policy in the context of the broader economy. He received his Ph.D. from Stanford University. He has published in top-tier economic journals like the American Economic Review and the Journal of Economic Literature. He is a member of the Editorial Council of the Journal of the Association of Environmental and Resource Economists. He was the recipient of the Graduate Teaching Award at University of California, San Diego in 2013, the Hellman Fellowship at University of California, San Diego in 2011, and the B.F. Haley and E.S. Shaw Dissertation Fellowship at the Stanford Institute for economic Policy Research at Stanford University in 2006.

Dr. Jacobsen earned a Ph.D. in Economics from Stanford University and a B.A. in Economics from Wesleyan University.


Matthew Kahn

Professor of Economics and Spatial Sciences
University of Southern California

Dr. Matthew Kahn is a Professor of Economics and Spatial Sciences at the University of Southern California, a Research Associate at the National Bureau of Economic Research, and a Research Fellow at IZA. He also serves as a Non-Resident Scholar at the NYU Stern School of Business, at the Urbanization Project, and as a Non-Resident Scholar at the University of Pennsylvania Institute for Urban Research. He has taught at Columbia, the Fletcher School at Tufts University, and UCLA. He has served as a visiting professor at Harvard and Stanford, and as the Low Tuck Kwong Distinguished Visiting Professor at the National University of Singapore. He holds a Ph.D. in Economics from the University of Chicago. He is the author of Green Cities: Urban Growth and the Environment,  the, the co-author (with Dora L. Costa) of Heroes and Cowards: The Social Face of War and the co-author (with Siqi Zheng) of   Blue Skies Over Beijing: Economic Growth and the Environment in China. His research focuses on environmental, energy, and urban economics.

Dr. Kahn earned a Ph.D. in Economics from the University of Chicago, a G.C. in Economic History from the London School of Economic and a B.A. from Hamilton College