Rainer Tamme is head of "Thermal Process Technology" department at the Institute of Technical Thermodynamics of the German Aerospace Center (DLR) in Stuttgart, Germany. He is a recognized expert in the field of thermal energy storage, thermochemical conversion and fuel processing technologies. Key Qualifications in the subject energy storage are material development, design and integration of TES systems for power generation and for the industrial process heat sector. He has many years of experience in managing and coordinating numerous German and international projects involving a wide range of industrial companies and research institutes, e.g., he coordinated EC PF5 and FP6 projects dealing with energy conversion and storage for high temperature solar thermal applications. Rainer Tamme is a Diplom Chemiker in chemistry and chemical engineering from the Technische University Hannover and has got a Ph.D. in solid-state and inorganic chemistry. He has published more than 80 reviewed papers in international journals and proceedings on the subject thermal energy storage, thermal management, advanced heat exchanger, solar power plants, catalysis, Hydrogen generation and storage. He is teaching "solar thermal technology II high temperature applications" at the Mechanical Engineering Faculty of the University of Stuttgart and has supervised numerous students during their diploma, master and bachelor thesis. He is acting as Operating Agent of the IEA ECES Annex 19 "Optimised Industrial Process Heat and Power Generation with Thermal Energy Storage" and is associated editor of the ASME Journal of Solar Energy Engineering responsible for the subject storage. In addition he provides experts and evaluator services for German Ministries and for the EC.