Ottmar Georg Edenhofer (born 8 July 1961 in Gangkofen, Lower Bavaria, Germany) is a German economist, who deals with climate change policy, environmental and energy policy as well as energy economics. Edenhofer currently holds the professorship of Economics of Climate Change at the Technical University of Berlin; the co-chair of working group III Mitigation of Climate Change at the Intergovernmental Panel on Climate Change (IPCC); is deputy director and chief economist at the Potsdam Institute for Climate Impact Research (PIK); director of the Mercator Research Institute on Global Commons and Climate Change; fellow of the Academy of Sciences in Hamburg, Germany and Member of the Workgroup Climate, Energy and Environment within the German National Academy of Sciences Leopoldina, Germany.
Edenhofer completed his Diploma in Economics with honours at the Ludwig-Maximilian-University Munich. Briefly he trained for the Catholic priesthood as a Jesuit, earning a bachelor's in Philosophy with summa cum laude at the Munich School of Philosophy, founding an enterprise in the public health sector, and leading a humanitarian aid organisation in Croatia and Bosnia and Herzegovina between 1991 and 1993. After abandoning his pursuit of the priesthood Edenhofer worked as a research assistant from 1994 – 2000 and completed his PhD in Economics with summa cum laude at the Technical University of Darmstadt in 1999.
In 2004, Edenhofer was lead author of the Fourth Assessment Report on Climate Change published by the IPCC in 2007; together with former Vice President of the United States, Al Gore, and the IPCC have been awarded the Nobel Peace Prize in the same year.
Besides his function as a fellow at the Hanse Institute for Advanced Studies in Delmenhorst, Germany, in 2005, Edenhofer headed the Innovation Modelling Comparison Project “The Economic and Technological Dimensions of Stabilising the Atmospheric Greenhouse Gas Concentration” in close cooperation with Michael Grubb, Carlo Carraro and Kai Lessmann. Funded by the German Federal Ministry of the Environment, Nature Conservation and Nuclear Safety, the project results were published in a special issue of the International Association for Energy Economics’ Energy Journal in 2006.
Since 2007, Edenhofer is deputy director and chief economist at the PIK and director of its Research Domain III Sustainable Solutions, which focuses on the scientific research of the economics of atmospheric stabilisation. In close cooperation with the research domain’s staff, he formulated the concept “Global Deal” for climate protection as well as developed a concept for the transatlantic carbon market. He additionally supervises several PhD as well as Diploma Students at PIK and is in charge of the coordination of various third-party-funded research projects.
Initiated by the Michael Otto Foundation for Environmental Protection, Edenhofer holds the professorship of Economics of Climate Change at the Technical University of Berlin – first of its kind in Europe – since 2008. In the same year, he took the co-chair of working group III Mitigation of Climate Change at the IPCC. In addition to its position as director of the newly founded Mercator Research Institute on Global Commons and Climate Change (MCC), he is a member of the Science-Industry Cooperation; a member of German National Academy of Science Leopoldina’s Workgroup Climate, Energy and Environment; and a member of the World Bank’s advisory committee of the Green Growth Knowledge Platform. Until September 2009, Edenhofer was a key climate change advisor to the Federal Foreign Ministry and to the Federal Deputy Chancellor Frank-Walter Steinmeier. Besides his research and teaching activities, he actively contributes to public debates about political climate protection measures in Germany and the European Union.
Edenhofer explores the impacts of induced technological change on mitigation costs and strategies. Other research topics focus on the design of instruments for climate and energy policy, the economy of climate stabilization, social benefit-cost analysis and the theory of sustainability and economic growth.
Philosophy and position on climate change
In a 2013 profile at Nature, Edenhofer says that his interest in philosophy and economics was influenced by his readings of the works of Karl Marx, Max Weber, Ludwig Wittgenstein and John Dewey. For climate change, he said, “Denying out-and-out that climate change is a problem to humanity, as some cynics do, is an unethical, unacceptable position.” 
- since 2007: Fellow of the Academy of Sciences in Hamburg, Germany
- since 2008: Fellow of the German Association Socialpolitik, Research Committee Environmental and Resource Economics
- since 2009: Fellow of the International Association of Energy Economics
- since 2009: Member of the Scientific Advisory Council at the Munich Society for the Promotion of Economic Research
- since 2009: Member of the Scientific Advisory Council at the EUREF-Institute in Berlin
- since 2010: Member of German National Academy of Science Leopoldina’s Workgroup Climate, Energy and Environment
- August 2005: Fellow of the Hanse Institute for Advanced Study in Delmenhorst, Germany
- "The Climate Chairman", Nature, v. 501, pp 304-306, 19 Sept 2013
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- Chair of Economics of Climate Change at Technical University Berlin
- Ottmar Edenhofer at the Potsdam Institute for Climate Impact Research (PIK)
- Potsdam Institute for Climate Impact Research (PIK) - Research Domain III (Sustainable Solutions)
- IPCC Working Group III
- IPCC Working Group III - Technical Support Unit
- Michael Otto Foundation
- Mercator Research Institute on Global Commons and Climate Change