@HubertManne @Eyekaytee It’s sticking in my mind that’s there extra “stuff” that needs to happen for a battery to supply power to the house if the mains feed drops. But I can’t remember what the man said. I will have to read up on it again and consider if it’s worth it - I’m not sure I expect many outages (metro area, with newly-upgraded/buried power lines). And i’d just go to the park if there was one.