Overview
- Tesla announced the change on Tuesday, enabling Powershare Home Backup for new Model 3 and Model Y cars when paired with a Powerwall 3 and a Wall Connector.
- The feature runs through an in-car inverter Tesla calls PCS2 Lite and is delivered by recent software updates that can often be enabled remotely for new Powerwall 3 installations.
- Tesla says a charged Model 3 or Model Y can add roughly two days of backup for a home using about 30 kWh per day while a Cybertruck can add more than three days.
- Not every earlier-built Model 3 and Model Y qualifies because many pre-October 1 cars lack the PCS2 Lite hardware, and owners can check the car touchscreen under Software → Additional Vehicle Information for 'Powershare Support: Enabled.'
- Availability is limited to the U.S. and Puerto Rico for now, Grid Support remains exclusive to the Cybertruck, and Powerwall 2/Plus compatibility is listed as coming soon, which keeps Tesla behind rivals that offered V2H years earlier.