Two tank molten salt heat storage in the temperature range above 400°C is considers state of the art technology with a several GWh capacity installed in particular in CSP power plants. However other thermal storage concepts are under development that has a high potential to reduce the cost of such systems further. Options discussed in this presentations range from molten salt systems using a single tank possible using solid filler material or other solids like bauxite particles or fluids like liquid metals. Also the potential of high temperature change materials or chemically reacting material is discussed as options for heat storage systems.
Prof. Dr.-Ing. Robert Pitz-Paal is director at the DLR Solar Research Institute with more than 150 members of staff located in Cologne, Stuttgart, Jülich, Germany and Almería, Spain. This is the largest research institution in Germany working in the field of concentrating solar technologies. This position is jointly assigned with a professorship at Aachen University. His main research areas are the technical analysis and optimisation of concentrating solar power systems for generating electricity