Tesla Activates Powershare Home Backup for Model 3 and Model Y

Tesla has enabled Powershare Home Backup for the Model 3 and Model Y, allowing its two highest-volume electric vehicles to send power back into a house during grid outages. Until this update, the Cybertruck was the only Tesla model capable of this vehicle-to-home function.

What Happened

Tesla Energy announced the launch on X, stating that Powershare Home Backup is now available for new Model 3 and Model Y vehicles paired with a Powerwall 3. According to Tesla’s updated Powershare page, the feature is guaranteed for cars ordered on or after October 1, 2026, in the US and Puerto Rico. For vehicles built before that date, Tesla notes that "some, but not all" have the necessary hardware. Owners can verify capability by checking the touchscreen under Software > Additional Vehicle Information for "Powershare Support."

The system requires a Powerwall 3 and a Wall Connector or Universal Wall Connector. Tesla states that a Model 3 or Model Y can add "over two days" of backup for a home using 30 kWh per day, starting from a 90% charge, with a maximum continuous output of 11.52 kW. Standard trims provide "up to two days," while the Cybertruck offers more than three. Unlike the Cybertruck, which can use a Powershare Gateway, Model 3 and Model Y owners cannot use that alternative; Powerwall 2 and Powerwall+ support is listed as "coming soon," and Grid Support (selling power back to the utility) is not available for these models.

Why It Matters

This move brings Tesla’s volume vehicles into the growing vehicle-to-home market, though it places Tesla behind competitors. Ford launched home backup on the F-150 Lightning in 2022 with 9.6 kW output, and GM committed in 2023 to bringing the feature to its Ultium-based EVs by model year 2026, a deadline it met. Tesla previously stated at Investor Day in March 2023 that bidirectional charging could arrive "within the next two years," a timeline that has slipped by roughly a year and a half.

For current owners, the requirement for a Powerwall 3 and a specific order date limits the immediate impact. However, for new buyers, the integration simplifies the setup compared to competitors like Ford and GM, which often require separate inverter and backup hardware installations. If an owner already possesses a Powerwall 3 and Wall Connector, no additional hardware purchase is needed, though they must contact Tesla support to activate the feature.

The Bottom Line

Tesla has finally activated vehicle-to-home backup for its mainstream sedans and crossovers, but access is restricted to new orders with specific hardware. While this closes a functional gap with Cybertruck and aligns with long-standing promises, it leaves millions of existing Model 3 and Model Y vehicles without guaranteed support, and Tesla remains behind Ford and GM in terms of deployment timeline and breadth of compatible models.