Photovoltaics (also called PV) is a method of generating electrical power by converting solar radiation into electricity. The system consists of photovoltaic panels, DC-AC power inverter, battery bank, system and battery controller, auxiliary energy sources. See an image below for the links between the different components.
For the purposes of your vignette you have to locate only the photovoltaic modules/panels. The other system elements will be located somewhere inside the building and are not a concern.
The image below shows one way of positioning photovoltaic solar panels on the roof of a building.
