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Energy Systems Analysis Group


The Energy Systems Analysis Group (ESAG) includes core members plus visiting researchers and students, in addition to collaborators worldwide. ESAG’s alumni (former students and postdoctoral fellows) work in industry, government, academia, and non-governmental organizations.


Eric D. Larson, Senior Research Engineer, Group Head (Larson full CV)

Larson’s research intersects engineering, environmental science, economics, and public policy. His energy systems modeling and analyses aim at identifying sustainable, engineering-based solutions to major energy-related problems. His work assesses resource, economic, and environmental implications of prospective technology developments and helps inform public and private decision making in the U.S. and elsewhere. He has published extensively on the design and analysis of advanced biomass and fossil fuel conversion technologies with CO2 capture and storage.  He was part of the Princeton team contributing to the National Research Council report, America’s Energy Future: Technology and Transformation (2009). He was a Co-Convening Lead Author of the fossil energy chapter of the major international study, The Global Energy Assessment (2012).  He co-leads Princeton’s ongoing Net-Zero America project, and he is active in the global Rapid Switch initiative established by the Andlinger Center.  Larson is an Affiliated Faculty member with the High Meadows Environmental Institute and the Center for Policy Research on Energy and Environment in the School of Public and International Affairs at Princeton. He also holds an appointment as a senior scientist with Climate Central, a non-profit, non-partisan science and media organization that informs diverse audiences about climate change and potential solutions.

Chris Greig, Theodora D. ’78 & William H. Walton III ’74 Senior Research Scientist (Greig full CV)

Chris commenced a 25-year career in industry in 1986 as the co-founder of a successful process technology and contracting company, which he sold in 1999 to a major European engineering company.  From 1999 to 2011, he held senior project and executive roles in the construction and energy resources sectors, including as CEO of ZeroGen, a large-scale carbon capture and storage (CCS) project. In 2011 he joined the faculty of the University of Queensland (Australia), where he led both the UQ Energy Initiative and the Dow Centre for Sustainable Engineering Innovation. He also served as Chairman of the Energy Policy Institute of Australia, Deputy Chairman of Gladstone Ports Corporation, and Non-Executive Director of two ASX listed engineering companies. He was a Gerhard R. Andlinger Visiting Fellow in Energy and Environment at the Andlinger Center from 2018 to 2020, and joined Princeton University as a Senior Research Scientist in August 2020.  He also holds an Adjunct Professorship at UQ.  Chris has a PhD in chemical engineering from UQ and is a Fellow of the Australian Academy of Technological Sciences and Engineering.  His research interests lie in energy transitions, economics and policy, energy for development, mega-project implementation, and CO2 capture and storage systems.

Joe Lane, Associate Research Scholar (Lane full CV)

Joe’s research builds on his past experiences in industrial engineering and government management of natural resources, through which he developed an interest in the integration of complex environmental and socio-economic trade-offs into decision making. This led to a cross-disciplinary PhD (2015) on life-cycle perspectives for the urban water industry using a variety of methodologies to analyze barriers and opportunities for major change to water, food and energy systems. Joe’s current research aims at improving our understanding of how to accelerate decarbonization of energy systems. His research has a twin focus: (i) identifying and communicating major risks to achieving rapid and deep decarbonization globally, and (ii) developing a systematic understanding of the medium-long term bottlenecks that might constrain efforts to decarbonize the rapidly growing Indian energy sector.

Ali Daraeepour, Postdoctoral Research Associate (Daraeepour full CV)

Ali uses systems analysis, economics, optimization, and engineering to provide quantitative answers to important policy questions in the electricity sector. His research focuses on market design and grid operation reforms to enhance economic and environmental efficiency of electricity grids with continued growth in variable renewable electricity and emerging technologies that support advancing zero-emission objectives. His PhD dissertation (2017, Duke University) addressed understanding grid-integration of variable renewable resources and related design of electricity markets and processes underlying operation of electricity grids. Prior to his PhD, he worked for several years as a power system engineer and consultant. Ali is a Senior Member of the Institute of Electrical and Electronics Engineers (IEEE), the world’s largest professional association dedicated to advancing technological innovation.

Andrew Pascale, Postdoctoral Research Associate (Pascale full CV)

Andrew’s interests are in timely low carbon energy transitions that allow inclusive high development levels for all global populations, while remaining within safe planetary boundaries. In 2018, Andrew both led the technical design and installation of a 3.4 kW solar PV system powering a sewing workshop in a remote village in rural Thailand and was awarded a PhD from the University of Queensland, Australia. His PhD dissertation refines standard presentations of energy use/carbon dioxide emissions and human welfare relationships to expose intra-country inequalities and allow compelling global challenges connected with the vision of a world characterized by universal High human development and minimal global warming to be framed for individuals rather than nations.

Erin Mayfield, Postdoctoral Research Associate (Mayfield CV)

Erin is an environmental engineer and public policy researcher, with expertise in complex systems analysis, optimization, and environmental economics.  In 2019, she completed her Ph.D. in Engineering and Public Policy at Carnegie Mellon University, researching the air quality, climate, and labor market impacts and equity implications of energy-system transitions.  She previously worked as an environmental consultant on natural resource damages litigation and ecosystem service modeling, and has held positions at the U.S. Environmental Protection Agency, U.S. Congress, and Environmental Law Institute. She received her bachelor’s degree in environmental science from Rutgers University and master’s degree in environmental engineering from Johns Hopkins University.

Chuan Zhang, Postdoctoral Research Associate (Zhang CV)

Chuan’s research interests center on technological energy transitions and sit at the intersection between system modeling, environmental assessment and economics analysis. He completed his PhD in 2019 within a joint program of Nanyang Technological University (Singapore) and Cambridge University (UK). His dissertation focused on optimal design and operation of energy systems at various temporal and spatial scales using techno-economic-environmental modeling and mathematical programing. His interests include techno-economic evaluation of energy-sector decarbonization technologies, including decarbonized fossil fuel power generation.  Chuan also has interests in understanding potential impacts of advances in artificial intelligence on energy-system transitions.


Carbo, Michiel

Michiel Carbo is a research engineer working on biosyngas, bioSNG and BECCS, in the Biomass, Coal and Environmental Research Department at the Energy Research Centre of the Netherlands (ECN).
In residence with ESAG: November 2008 – March 2009 (Visiting Graduate Student).

Consonni, Stefano

Stefano Consonni is a professor at the Department of Energy, Politecnico di Milano, Milan, Italy.
Visitor-in-residence appointments with ESAG in 2002, 2007, and 2018.

Dryer, Fred

Fred Dryer, professor emeritus of Mechanical and Aerospace Engineering at Princeton University, is currently Educational Foundation Distinguished Research Professor of Mechanical Engineering at University of South Carolina.

Hannula, Ilkka

Ilkka Hannula is a senior researcher and principal investigator at the VTT Technical Research Centre of Finland Ltd.
In residence with the ESAG: February 2011-January 2012 (Visiting Graduate Student).

Haro, Pedro

Pedro Haro is a doctoral member of the Bioenergy Group (Department of Chemical and Environmental Engineering) at the University of Seville (Spain).
In residence with ESAG: September 2017 – February 2018 (Fulbright post-doctoral fellow).

Kreutz, Thomas G.

Tom Kreutz was the senior energy systems modeler with ESAG for two decades prior to his retirement in 2019. Kreutz’s interests are in modeling advanced energy conversion systems, in particular: production of hydrogen, electricity, and CO2 (for sequestration) from coal, residential scale, natural gas-fired PEM fuel cell cogeneration, fuel cell hybrid vehicles: power system design and vehicle performance modeling, reforming liquid fuels to hydrogen for mobile and stationary power applications, gasification of biomass and black liquor for combined cycle generation of electric power, and fuel cells, gas turbines, and hybrid/combined cycles for electric power generation. (Kreutz full CV)

Lanzini, Andrea

Andrea Lanzini is an assistant professor at the Energy Department of Politecnico di Torino (Italy).
In residence with ESAG: October 2010 – April 2011 (Visiting Graduate Student).

Li, Zheng

Zheng Li is the dean of Department of Thermal Engineering, Tsinghua University, Beijing, China.
In residence with ESAG in September 2001 and January 2002 (Visiting Scholar).

Liu, Guangjian

Guangjian Liu is an assistant professor at the North China Electric Power University, School of Energy & Power Engineering, Beijing, China.
In residence with ESAG: March 2008 – September 2010 (Research Associate).

Martelli, Emanuele

Emanuele Martelli is an assistant professor in the Department of Energy, Politecnico di Milano, Milan, Italy.
In residence with ESAG: March 2007- August 2007, March 2009 (Visiting Researcher).

Meerman, Hans

In residence with ESAG: 2013- June 2017 (Research Associate).

Socolow, Robert H.

Socolow, Professor Emeritus of Mechanical & Aerospace Engineering, is interested in the characteristics of a global energy system responsive to global and local environmental and security constraints. His specific areas of interest include carbon dioxide capture from fossil fuels and storage in geological formations, nuclear power, energy efficiency in buildings, and the acceleration of deployment of advanced technologies in developing countries.

Spinelli, Maurizio

Maurizio Spinelli is a Ph.D. candidate in the Dipartimento di Energetica, Politecnico di Milano, Italy.
In residence with ESAG: May – October, 2014 (Visiting Graduate Student).

Tavoni, Massimo

Massimo Tavoni, Senior Researcher at Fondazione Eni Enrico Mattei (FEEM). In residence with PEI and the ESAG: 2008-2010.

Williams, Robert H.

Robert H. Williams founded and led the Energy Systems Analysis Group during a 41-year career at Princeton University that concluded in early 2017. He is currently Senior Research Scientist, Emeritus, Andlinger Center for Energy and the Environment. He is interested in fuel cells for transportation and stationary power applications, advanced gas turbine technologies for power generation, advanced technologies for producing hydrogen and other clean synthetic fuels from carbonaceous feedstocks, fuels decarbonization and CO2 sequestration, various renewable energy technologies, and nuclear energy (mainly proliferation and economic aspects). (Williams full CV)


These individuals have had past association with the Energy Systems Analysis Group. Under each name, the years spent as part of the ESAG and position in the Group or at Princeton University are given, followed by the last known institutional affiliation.

Clinton J. Andrews

1992-1997, Assistant Professor, Woodrow Wilson School of Public and International Affairs.
Rutgers University, Boustein School, Urban Planning and Policy Development Program

Michael J. Antal

1975-1982, Assistant Professor, Princeton, Mechanical and Aerospace Engineering Department.
University of Hawaii, Department of Mechanical Engineering.

Birgir Arnason

1983 MSE, Princeton, Mechanical and Aerospace Engineering Department

Samuel F. Baldwin

1986-1989?, Post-Doctoral Fellow, Center for Energy & Environmental Studies.
U.S. Department of Energy, Office of Energy Efficiency and Renewables.

David L. Bohac

19?? MSE, Princeton, Mechanical and Aerospace Engineering Department.
Energy Conservation Center?, Minneapolis, Minnesota

Valentina Bosetti

2008-2009 Visiting Fellow, Princeton Environmental Institute, Fondazione Eni Enrico Mattei, Italy

Herbert F. Bormann

19??-19??, Visiting Senior Research Scientist, Center for Energy & Environmental Studies.
Yale University, School of Forestry and Environmental Studies?

Alfred Cavallo

1992-1997, Research Associate, Center for Energy & Environmental Studies. USDOE Lab, New York City

Fuat Celik

2002-2003, Research Associate, Princeton Environmental Institute, UC Berkley, Chemical Engineering Department

Haiping Chen

2010, Visiting Scholar, Energy Systems Analysis Group
Haiping Chen is a professor in the Energy and Power Engineering Department, North China Electric Power University, Beijing.

Jeffrey S. Chen

1995 MSE, Princeton, Mechanical and Aerospace Engineering Department.
Lazard, Minneapolis

Stefano Consonni

1992 PhD., Princeton, Mechanical and Aerospace Engineering Department.
Politecnico di Milano, Departimento di Energetica

Ben Court

2007-2011 PhD. MAE Princeton, Boston Consolting Group, Paris

Ogunlade R. Davidson

19??-19??, Visiting Researcher, Center for Energy & Environmental Studies.
University of Cape Town, Energy Development Research Center

John M. DeCicco

1988 Ph.D., Princeton, Mechanical and Aerospace Engineering Department.
Environmental Defense, Washington, DC

Luca DeLorenzo

2004 MSE Princeton, Mechanical and Aerospace Engineering Department. BP, England

Mark A. Delucchi

1990?-1991?, Post-Doctoral Fellow, Center for Energy & Environmental Studies
University of California – Davis, Institute for Transportation Studies

David Denkenberger

2003 MSE, Princeton, Mechanical and Aerospace Engineering Department, Colorado

Diamond, Richard (Rick)

10/86 to 6/87; Soc of Bldg Sci Educators Amer Lung Assoc Environ Wrkg Grp Harvard Grad Sch Design

Richard Duke

Gautum S. Dutt

1976-1986, Research Engineer, Center for Energy & Environmental Studies
National University of Argentina, Buenos Aires.

Giulia Fiorese

2007 Visiting graduate student, Princeton Environmental Institute
Post-doctoral researcher at Dipartamento di Elettronica e Informazione, Politecnico di Milano, and FEEM, Milano

Xiangbo Guo

2010, Visiting Scholar, Energy Systems Analysis Group
SINOPEC’s Research Institute for Petroleum Processing, Beijing

Simone Hochgreb

1991 Ph.D., Princeton, Mechanical and Aerospace Engineering Department
Cambridge University, England

Laura Iwan

1997 MSE, Princeton, Mechanical and Aerospace Engineering Department
Ballard, Inc., Vancouver, British Columbia

Haiming Jin

1997-1998, Post-Doctoral Fellow, Center for Energy & Environmental Studies.
SNC-Lavelin, Houston

Sivan Kartha

1994-1997, Post Doctoral Fellow, Center for Energy & Environmental Studies.
Stockholm Environmetal Institute, Boston, Massachussetts.

Ryan E. Katofsky

1993 MSE, Princeton, Mechanical and Aerospace Engineering Department.
Navigant Consulting, Inc., Burlington, Massachussetts.

Willett Kempton

1985 – 1992, Research Anthropologist, Center for Energy and Environmental Studies, Princeton.
University of Delaware, College of Earth, Ocean and Environment.

Qiang Li

2012-2013, Visiting Scholar, Energy Systems Analysis Group
SINOPEC’s Research Institute of Petroleum Processing, Beijing

Luca Mastropasqua

2018, Visiting post-doctoral fellow, Andlinger Center for Energy and the Environment
GECOS, Energy Department, Politecnico di Milano, Italy

Lars J. Nilsson

1994-1995, Post-Doctoral Fellow, Center for Energy & Environmental Studies
University of Lund, Department of Energy and Environmental Systems Studies

Joan M. Ogden

1986-2003, Research Scientist, Center for Energy & Environmental Studies and Princeton Environmental Institute. Associate Professor, Department of Environmental Science and Policy as well as an appointment in the Institute of Transportation Studies, University of California, Davis.

Supramaniam Srinivasan

1997-2002, Visiting Senior Research Scientist at Center for Energy & Environmental Studies. Srinivasan’s research was in basic and applied electrochemistry, bioelectrochemistry, and electrochemical energy conversion and storage. Deceased

Samir Succar

2003-2008, Princeton, Electrical Engineering Department. NRDC, NY

Ernst Worrell

1995-1996, Post-Doctoral Fellow, Center for Energy & Environmental Studies.
Lawrence Berkeley National Laboratory, Berkeley, California.

Yuan Xu

2006-2010, Ph.D., Woodrow Wilson School of Public and International Affairs. Massachusetts Institute of Technology, Industrial Performance Center

Yuan Xue

200? MSE Princeton Mechanical and Aerospace Engineering Department.

Zhe Zhou

2010 Visiting graduate student, Princeton Environmental Institute
Ph.D. candidate, Thermal Engineering Department, Tsinghau Unversity, China