Tesla Model 3 and Model Y can now power your home in an outage, but only in the US: Powershare Home Backup needs a Powerwall 3
Until now, only the Cybertruck had Powershare Home Backup. Tesla promises more than two days of backup and up to 11.52 kW for Model 3 and Model Y vehicles ordered from October 1, 2026, in the US and Puerto Rico.
Tesla Energy announced yesterday that Powershare Home Backup now works on the Model 3 and Model Y. In other words, Tesla's best-selling cars can send power back into the house when the grid goes down. Until now, the only Tesla that could do this was the Cybertruck.
The feature is available only in the US and Puerto Rico, and Tesla only guarantees it for cars ordered from October 1, 2026. Tesla's Canadian website, for example, still lists it as a Cybertruck-only feature.
What you need
- a Powerwall 3 at home;
- a Wall Connector or Universal Wall Connector that the car is plugged into.
If you already have both, you don't need to buy any other hardware. Support for Powerwall 2 and Powerwall+ is "coming soon". Without a Powerwall, the Model 3 and Model Y can't power the home: the Powershare Gateway option remains Cybertruck-only.
How long it lasts
Tesla estimates that a Model 3 or Model Y in Premium or Performance trim adds more than two days of backup for a home using 30 kWh a day, starting from a 90% charge. Standard trims get up to two days, and the Cybertruck more than three. Maximum continuous output is 11.52 kW. For comparison, the outlet adapter offered for the Model Y Premium since August delivers only 2.4 kW.
Older cars
For cars built before October, Tesla says "some, but not all" have the required hardware, an inverter called PCS2 Lite. You can check on the touchscreen: Software → Additional Vehicle Information, where "Powershare Support" should show as enabled.
Some limits remain: the Model 3 and Model Y can't sell power back to the grid (Grid Support is still Cybertruck-only), and the Model S and Model X are not included. Electrek points out that Ford has offered home backup on the F-150 Lightning since 2022, and GM across its Ultium range.
In other markets, Tesla has so far only switched on V2L, for small appliances. The details are in our article on V2L for the Model 3 and Model Y.
