[pwm]

I know next to nothing about these but a friend of mine was grumbling the other day about why can't he just use his electric car's huge battery to power his house. It sounded like a great thing? During the day his solar panels charge his car and at night it could power the house (to some extent). I remember him saying something like this is being trialled in Japan maybe? Anyone knows more about this?

[tk75x]

That functionality is called "vehicle-to-grid" or V2G sometimes. The F-150 lightning has that capability built in, and there are several companies working to bring devices to market which will act as an interface between the vehicle and your home's electrical panel.

[hedora]

It’s coming soon. Our car’s battery capacity is comparable to the house batteries, so during extended rainy power outages, I’d love to be able to fast charge the car, drive it home, and top off the house battery. (Adding 50% per trip.)

The only other alternative is installing and maintaining a propane generator, but that’s more time then a few round trips into town per year (especially since the grocery store has a fast charger, and we invariably need to purchase food during these events).

Also, they ended up rationing propane this year, since the delivery progress with the big trucks was hampered by road conditions, and demand was unprecedented.

[perviouslyiner]

Technology Connections made a video where he tested using vehicle-to-load as the only house power for a day - https://www.youtube.com/watch?v=yO5fJ8z66Z8