As soon as the power supply unit is switched on, the system is always under voltage via the controller. So depending on how many leafs are installed, because each of them also needs a low standby consumption, the total will be the same. I have not yet researched data sheets with the corresponding technical details. The power consumption only becomes =0A when the power supply unit is disconnected from the mains.
If the APP IFTTT is used as an application, the controller or the entire system must be permanently supplied.