Vera Solaris' Polysun software is used to design, calculate performance and optimise photovoltaic installations. In addition to typical PV systems, it offers the possibility to simulate PVT (photovoltaic-thermal) hybrid collectors and to combine photovoltaic systems with heat pumps, coolers and boilers. The programme has a library with ready-made designs, which can be modified. It is possible to select the right system for the customer. The applied demand can be optimised for customers who are interested in generating energy for heating, domestic hot water (DHW) or swimming pool Fig. 1.

Figure 1: Example system supplying heating, swimming pool and a two-storey detached house. Energy is generated using eight high-quality photovoltaic-thermal panels. Own elaboration on the basis of the Polysun software by Vela Solaris.