Right I think I get it. When you say "3.6Kw is the maximum power the inverter can inject into the grid" that doesn't just mean exporting power to the grid, but also powering my house circuits that are linked to the grid-tied output of the inverter?Stinsy wrote: ↑Mon Oct 10, 2022 12:38 pm The 3.6kW one is the biggest you can have without asking permission form the DNO (power company). 3.6Kw is the maximum power the inverter can inject into the grid, this can come from solar or batteries or a mixture of the two. Imagine your panels are producing 2kW and your house load is 4kW. Then you would get 2kW from the solar, 1.6kW from the batteries, and 400W from the grid. The extra 600W will significantly reduce how much peak grid power you consume.
And the 3kW rated "back up" output of the inverter is the purely battery powered output that continues to work in a power cut. Implying that the grid-tied output will not work in a power cut, even if I have PV generation and/or full batteries? Because the inverter is not allowed to energise the grid in a power cut situation?
So, it might be a sensible idea to add a second consumer unit connected to the "back up" output, and connect, say, my freezers to it? But this could be done at a later time if I decide to.