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Celebrating 10 Years

About the Authors

Emissions Trading in the U.S.: Experience, Lessons, and Considerations for Greenhouse Gases

Author Bios

A. Denny Ellerman, Massachusetts Institute of Technology

Dr. Ellerman is a Senior Lecturer with the Sloan School of Management at the Massachusetts Institute of Technology, where he also serves as the Executive Director of the Center for Energy and Environmental Policy Research and of the Joint Program on the Science and Policy of Global Change. His former employment includes Charles River Associates, the National Coal Association, the U.S. Department of Energy, and the U.S. Executive Office of the President. He served as President of the International Association for Energy Economics for 1990. Dr. Ellerman received his undergraduate education at Princeton University and his Ph.D. in Political Economy and Government from Harvard University. His current research interests focus on emissions trading, climate change policy, and the economics of fuel choice, especially concerning coal and natural gas.


Paul L. Joskow, Massachusetts Institute of Technology

Paul L. Joskow is Elizabeth and James Killian Professor of Economics and Management at MIT and Director of the MIT Center for Energy and Environmental Policy Research. He received a B.A. from Cornell University in 1968 and a Ph.D. in Economics from Yale University in 1972. Professor Joskow has been on the MIT faculty since 1972 and served as Head of the MIT Department of Economics from 1994 to 1998.

At MIT he is engaged in teaching and research in the areas of industrial organization, energy and environmental economics, and government regulation of industry. Professor Joskow has published five books and over 100 articles and papers in these areas. He has been studying the behavior and performance of the SO2 allowance trading program created by the Clean Air Act Amendments of 1990 for several years and is a co-author of the book Markets for Clean Air: The U.S. Acid Rain Program (Cambridge University Press).

Professor Joskow has served as a consultant on regulatory and competitive issues to organizations around the world. He served on the EPA’s Acid Rain Advisory Committee from 1990-1992 and was a member of the Environmental Economics Advisory Committee of the EPA’s Science Advisory Board from 1998-2002. He is a Director of the National Grid Transco Group and the Whitehead Institute for Biomedical Research and a Trustee of the Putnam Mutual Funds. He is a Fellow of the Econometric Society and the American Academy of Arts and Sciences.


David Harrison, Jr. , National Economic Research Associates, Inc.

David Harrison is a Senior Vice President at National Economic Research Associates (NERA), an international firm of 500 consulting economists operating in 16 offices on five continents and a Marsh & McLennan company. Dr. Harrison is co-chair of NERA’s energy and environmental economics practice.

Before joining NERA in 1988, Dr. Harrison was an Associate Professor at the John F. Kennedy School of Government at Harvard University, where he taught microeconomics, environmental and energy policy, transportation policy, and benefit-cost analysis. He was a member of the Faculty Steering Committee of Harvard’s Energy and Environmental Policy Center. Dr. Harrison earlier served as a Senior Staff Economist on the President’s Council of Economic Advisors, where his areas of responsibility included environmental regulation, natural resource policy, transportation policy, and occupational health and safety.

Dr. Harrison has consulted for private firms, trade associations, and government agencies in the U.S. and abroad on many energy and environmental issues. Dr. Harrison has been active in the development of major emissions trading programs, including serving on the advisory committee to develop RECLAIM, an author of proposals for averaging, banking, and trading programs for mobile sources and for NOx trading proposals for the Northeast, and a consultant to the European Commission (EC) with regard to aspects of its proposed greenhouse gas emissions trading program. He is currently advising the UK government with regard to aspects of its EU program and the EC with regard to trading programs for non-greenhouse gas emissions.

Dr. Harrison holds a Ph.D. in Economics from Harvard University, a M.Sc. in Economics from the London School of Economics, and a B.A. in Economics from Harvard University.