On the one hand, there are legal reasons for this. In Germany, for example, the maximum inverter output for balcony power plants is limited to 800 W. However, it can make sense to operate 1000W+ panels on an 800W inverter, as more powerful panels deliver more power even with a lower light yield. Depending on the orientation, the maximum output power of 800W of the inverter can therefore be achieved earlier and for longer.