Here we have the system in action earlier today. With 1542 Watts coming from the solar panels, the house (including the PowerVault storage battery) is running at a maximum of 1097 Watts, with the balance of the available power controlled by the ImmerSUN- 410 Watts to water heating and at the point of this snapshot 35 Watts into the grid. At this moment that’s 97% of generation used as such self-consumption and 100% of energy being consumed coming from the solar panels.
if the ImmerSUN had priority then it would have taken all the available power leaving nothing for the PowerVault storage battery.