@Kezo the one thing the givenegy does have in its favour is the Gateway. Ad far as I can make out its the Gateway that is the brains of the op and the all in one is just connected to it. The Gateway allows the house to continue to run even in a energy blackout. Also in the future the Givenenergy EV charger will be upgraded to V2L and “work seamlessly withe Gateway”
What the Gateway does, can easily be done on every other system such as @Oscarmax system using switch controller board!