Photovoltaic systems (PV systems) Like a normal solar collector, a photovoltaic system also works with large solar cells mounted on the roof of a house. The solar energy stored by the solar cells is converted into electricity.

Since one solar cell produces just 0,5 volts of electrical power, several cells are combined to form solar modules. The generator consists of one or more such modules. The current is fed to the rest of the system via cables which are connected to the system.