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Volker Krey

Research Group Leader and Principal Research Scholar

Sustainable Service Systems Research Group

Energy, Climate, and Environment Program

Research Group Leader and Principal Research Scholar

Integrated Assessment and Climate Change Research Group

Energy, Climate, and Environment Program

Biography


Volker Krey leads the Integrated Assessment and Climate Change  Research Group of the IIASA Energy, Climate, and Environment Program.

His 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, as well as 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 decade, 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.

Krey has served as a Lead Author of multiple IPCC Reports, including the 5th and 6th Assessment Reports of Working Group III, and the Special Report on Renewable Energy Sources and Climate Change Mitigation. He has coauthored 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 in their annual rankings.


Last update: 19 NOV 2025

Publications

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Palatnik, R. , Davidovitch, A., Krey, V. , Sussman, N., Riahi, K. , & Gidden, M. (2023). Accelerating emission reduction in Israel: Carbon pricing vs. policy standards. Energy Strategy Reviews 45 e101032. 10.1016/j.esr.2022.101032.

Awais, M. , Vinca, A. , Byers, E. , Tagomori, I.S., Harmsen, M., Krey, V. , & Riahi, K. (2022). Achieving a balance between SDGs & Climate impacts across Energy, Water Land nexus. In: Fifteenth Annual IAMC Meeting, 29 November - 1 December 2022, College Park, MD, USA.

Vinca, A. , Awais, M. , Riahi, K. , Byers, E. , Fricko, O. , Frank, S. , Satoh, Y., & Krey, V. (2022). Including water, energy and land climate impacts and adaptation strategies in IAM scenarios. In: IAMC 2022, December 2022.

Vinca, A. , Awais, M. , Mastrucci, A. , van Ruijven, B. , Riahi, K. , Byers, E. , Frank, S. , Satoh, Y., & Krey, V. (2022). Interaction of Mitigation vs Adaptation Pathways with Environmental Boundaries, Natural Hazards, and Sustainability Objectives Across the Energy, Water and Land Sectors. In: AGU Fall Meeting 2022, December 2022.

Byers, E. , Krey, V. , Kriegler, E., Riahi, K. , Schaeffer, R., Kikstra, J. , Lamboll, R., Nicholls, Z. , Sandstad, M., Smith, C. , van der Wijst, K., Al -Khourdajie, A., Lecocq, F., Portugal-Pereira, J., Saheb, Y., Stromman, A., Winkler, H., Auer, C., Brutschin, E. , Gidden, M. , Hackstock, P., Harmsen, M., Huppmann, D. , Kolp, P. , Lepault, C., Lewis, J. , Marangoni, G., Müller-Casseres, E., Skeie, R., Werning, M., Calvin, K., Forster, P., Guivarch, C., Hasegawa, T., Meinshausen, M., Peters, G., Rogelj, J. , Samset, B., Steinberger, J., Tavoni, M., & van Vuuren, D. (2022). AR6 Scenarios Database. 10.5281/zenodo.7197970.