Deliverable D4.3 is related to the TCM and PCM storage system development. It details the operation of the storage systems, as well as the design and specifications of the different components implemented in them according to the seasonal operating conditions and the solar resource available at each demo site. The TCM storage process ensures the dual function of storing the thermal energy from the solar collectors during the day and its restitution during the night in the form of cold in summer or heat in winter. Such heat or cold is stored by PCM thermal storage units for use during the following days, independent of the operation of the TCM storage unit. The TCM unit exploits the low temperature thermal energy delivered by PVT or FPC collectors during the day or a backup system if needed when the solar resource is too low. During the day the hot PCM units store the heat rejected at the condenser of a mechanical HP and during the night the heat produced by the TCM reactor. Thecold PCM stores the cold that is produced by the TCM evaporator during the night in summer. In addition, this report also details the control strategy of the TCM unit and PCM storage.