[kkfx]

That's why my system (Victron + Fronius) is offline, monitored with HA, BYD battery if there is no secret in-hw backdoor in my home server can't reach the internet as well. HA can, via wireguard, to act/monitor when I'm outside my home witch might be a serious threat but it's pretty easy to cut it off if needed.

There is a more important part, while with p.v. we still can go offline, with car's we can't. My car is connected and I can't do NOTHING to manage it, it's managed by it OEM behind me and that's a much bigger threat since single cars can paralyze the nation if properly blocked in critical points of the road network.

At a largest scale that's the reason we can't have a national smart grid but only individual smart microgrid, meaning p.v. should be used only for self-consumption NOT grid-tied like in California.