Dr. Franz Trieb is senior researcher at the German Aerospace Center (DLR), Institute of Engineering Thermodynamics, Working Group Thermal Storage Power Plants. He works on renewable energy resource assessment and modelling, market strategies for renewable energies and on the design of transformation pathways for sustainable energy supply. His main field of research is the integration of fluctuating, flexible and stored forms of renewable energy into existing supply structures. He has given lectures on renewable energy integration at several international academies for over twenty years.