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2017 453 ForTwo Coupe ED
655 Posts
I think Tesla can do this today (use car as off-grid power with solar charging of car if the solar infrastructure is in place) and possibly the new Ford pickup as well. Effectively the car becomes the house battery. It is a good idea if you already have a battery electric car, since you don't have to buy a second house battery, but it has limitations (if you want to go for a drive, no house power and adds a lot of charge/discharge cycles to your car battery). My ideal situation would be to have solar and something like a tesla powerwall, then charge the car from the house's reserve power, but you have to pay for twice as many batteries.
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