Volker Krey

Volker Krey is the Research Group Leader of the Integrated Assessment and Climate Change (IACC) Research Group as part of the IIASA Energy, Climate, and Environment (ECE) Program.
He graduated in theoretical physics from the University of Dortmund (Germany) in 2002. In 2003, he joined the Institute of Energy Research - Systems Analysis and Technology Evaluation of the Research Centre Julich, where he continued to work until 2007. Since 2006, he has held a PhD in mechanical engineering from the Ruhr-University Bochum (Germany). Dr. Krey joined IIASA in October 2007 and became the Energy Program’s Deputy Director in 2011.

Dr. Krey's main fields of scientific interest include the integrated assessment of climate change and the link to a broader suite of sustainable development objectives such as improved air quality, sustainable water use and energy access, and the interaction with material cycles via circular economy strategies. His work focuses on the development and application of integrated assessment models (IAMs) with different regional focuses (subnational to global scale) and time horizons. Over the past few years, he has been overseeing the development of the MESSAGEix model at IIASA and its recent release as an open source tool. As a co-chair of the scientific working group on data protocols and management of the Integrated Assessment Modeling Consortium (IAMC), he has significantly contributed to improving transparency and data sharing in the IAM community.

Dr. Krey has served as a Lead Author of multiple IPCC Reports, including the 6th and 5th Assessment Report of Working Group III, and the Special Report on Renewable Energy Sources and Climate Change Mitigation. He has co-authored more than 120 publications that have been cited well over 20,000 times in total. From 2018 to 2024 he has been acknowledged as a Highly Cited Researcher by Clarivate.