Tesla just brought this functionality to new Model 3 and Model Y cars as of Oct 1. It requires at least one Powerwall 3 to enable bidirectional V2H - what they call Powershare. But those cars can now power the home and charge from solar while the grid is offline.

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numpad0 a day ago | parent [-]

So they always had it, just disabled in software?

	▲	CrimsonRain a day ago \| parent \| next [-]
		Or you can deploy the hardware while software is not ready...and allow it when software is built, tested and updated. That's why Tesla gets cool features like door open pedestrian/car alert, child left behind detection, smooth stop etc over the life of the car.
	▲	wky a day ago \| parent \| prev \| next [-]
		> By default, all Cybertruck trims ever produced and all Model 3 and Model Y vehicles ordered in the U.S. and Puerto Rico after October 1, 2026 are capable of Powershare. Some, but not all, Model 3 and Model Y vehicles produced before October 1, 2026 are also capable of Powershare. [0] I presume it is a hardware revision, like how Tesla removed radar. [0]: https://www.tesla.com/support/powershare
	▲	cyberax a day ago \| parent \| prev [-]
		Yes. Typically V2G works by connecting an external inverter to the high-voltage bus. It just needs to start a charging session, and then siphon energy _off_ instead of supplying it. People tried that before, but the firmware on Model 3/Y monitors the flow and terminates the session if the flow is negative.