Mr Theisen has been working in Central and Eastern European (CEE) energy and climate policy for more than a decade. Over the years his research and consulting agenda has spanned across multiple sectors, gradually narrowing to three areas of focus: sustainable mobility, geothermal energy and grid connectivity. He joined the SFPA Energy Policy and Climate Change department as Senior Fellow in 2022 after heading the energy program at Globsec (Bratislava-based NGO). Prior to that, he spent two years as a research associate at the Regional Centre for Energy Policy Research (REKK, Budapest). Mr Theisen holds a Masters of International Affairs (MIA) with a focus in international economics from the School of Global Policy and Strategy (GPS) at the University of California, San Diego. He enrolled in Reykjavik University’s Iceland School of Energy (ISE) geothermal field-study programme in the summer of 2021.