The energy demand in the world is growing day by day, providing continuously new challenges in the way of production. All the systems of connections and storage are investigated too. A smart and very useful solution to supply to needs for off-grid and compact situations, accompanied also by low losses, is represented by integrated Harvest and Storage (HS) devices. Many types of them exist, based on the integration of energy harvest devices, like DSSC and storage ones, like supercapacitors. In this work, many configurations have been studied and compared. They were distinguished according to their main components (DSSC, OPC, PVS or Si-PVC and supercapacitors, batteries or RFB) and their geometry (planr vs.