THE CRUNCH
Tesla is widening its Powershare Home Backup feature to some Model 3 and Model Y owners, letting them draw on the car's battery to keep the lights on during a power outage. The feature previously worked only with the Cybertruck, and it still requires owning a Tesla Powerwall 3 at home.
Tesla says the setup can stretch home backup power to more than two days. Support for the older Powerwall 2 and Powerwall Plus is described as "coming soon", so owners of those units will need to wait.
Tesla is not the first carmaker here: Kia and GM offer vehicle-to-home power on some models, and Nissan's Leaf could feed power back to the grid years ago. What Tesla adds is tying the capability to its own home battery ecosystem.