I'm looking at doing similar stuff right now. I already have a house battery.
However, looking at getting an EV - were you able to get bidirectional charging going?
I saw a few places mentioning demos of it over the past 5 years, but I can't find any v2x charger/car configurations I can buy and use in the UK.
Before looking at any of this stuff, I didn't realise how large and cheap the battery in an EV is compared to house batteries. Now I'm struggling to justify getting an EV if I can't do at least V2H bidirectional charging.
You can do bidirectional with most GM vehicles now with the GM energy solution. I don’t have this but I did have a call with them.
Thier max output is only 9.6kW so it can’t do a whole home backup and the car can only run in backup mode when the grid is out.
https://gmenergy.gm.com/
> Thier max output is only 9.6kW so it can’t do a whole home backup and the car can only run in backup mode when the grid is out.
9.6kW should be enough to backup your entire house, that's 87A... Lots of people only have a 100A supply in general. Depending on your setup you may have to limit what you use at one time but even in a large house that will be more than enough for AC, lights and electronic devices.