e-think is a private non-profit research and consulting institution based in Vienna, Austria. It aims to advance research in the field of energy economics at its interface with the environment and human society. Through technical, economic, and environmental assessments e-think contributes to the transition towards sustainable energy systems. e-think‘s main areas of competence are: • Analyse socio-economic aspects of energy use • Model energy systems and develop scenarios • Assess impacts of energy policies • Develop effective and efficient deployment strategies for RES in electricity, heat and transport • Promote energy efficiency in buildings, mobility, electrical, and industrial applications e-think’s activities encompass research in interdisciplinary cooperation, implementation and communication of research results. e-think is a spin-off of the Energy Economics Group (EEG) of the Vienna University of Technology (Technische Universität Wien – TUWien) with which it has strong cooperation on energy economics and modelling.