Annegret Stephan's research centers on technological innovation for a clean energy system, specifically on the coupling of the energy and transport sectors. After studying business engineering (Dipl.-Wi.-Ing.) at Karlsruhe Institute of Technology (KIT), she conducted her doctoral thesis with a focus on innovation in energy technologies, specifically stationary and mobile batteries, in the Group for Sustainability and Technology (SusTec) from the Department Management, Technology, and Economics at ETH Zurich (2013-2016). She continued working in this group as postdoctoral and senior researcher (2017-2021), and planned and led research projects on the development and diffusion of low-carbon energy technologies and sector coupling. Since January 2022, Annegret Stephan has been working as researcher at the Fraunhofer ISI in the business unit Energy Economy at the Competence Center Energy Technologies and Energy Systems. In addition, she teaches at ETH Zurich.
During her graduate and doctoral studies, Annegret Stephan conducted research stays at the University of Technology Sydney (UTS, Australia) and the University College London (UCL, UK). In addition, she gained practical experience in internships in several companies, such as McKinsey & Company, Deutsche Lufthansa and Metzler Investment GmbH.