When installing, series or parallel switching can be used, depending on the situation. When the roof has little shade or different inclination angles, series-connected is often chosen in combination with a central inverter. Here, the panels are connected as a series with respect to the inverter. Thus, they effectively act as one large solar panel. This means that when one panel yields less, for example because it is in the shade, this affects the yield of the entire system. In a parallel-connected system, the panels operate independently of each other. Each panel has its own inverter, or micro-inverter, connected in parallel with the other panels. As a result, the panels do not affect each other, and the yield is not penalised if one panel performs less. This is useful for roofs with a lot of shade or different slope angles, for example.