Sonja Thielges is a research associate at the Institute for Advanced Sustainability Studies (IASS) in Potsdam. At IASS, her work focuses on the global energy transition. Her research interests include the G20 energy agenda, the international dimension of the energy transition as well as U.S. energy and climate policy. Before joining IASS, Sonja was a member of the Americas Division at the German Institute for International and Security Affairs (SWP) and worked on projects at the Environmental Policy Research Centre (FFU), the Institut für Europäische Politik (IEP) Berlin and the Centre International de Formation Européenne (CIFE).

Sonja completed an MA in North American Studies, Political Science, and Modern History at Freie Universität Berlin and Indiana University Bloomington. She is currently working on a PhD project on U.S. state level climate policy discourses at the John F. Kennedy Institute for North American Studies. She did field research for her dissertation as a DAAD-funded visiting researcher at the University of Michigan in Ann Arbor.