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How to Check If Your Model 3 or Model Y Supports Powershare Home Backup
Powershare Home Backup lets a Model 3 or Model Y power your home during an outage, but not every car supports it. It depends on bidirectional charging hardware that Tesla only recently started incorporating into these models. To check, go to Settings > Software > Additional Vehicle Info and look for Powershare Support: Enabled. New U.S. orders placed on or after October 1, 2026 include it, and some earlier units do too. A software update cannot add it, and Tesla has not announced retrofits for cars without that hardware.…
- Check Settings > Software > Additional Vehicle Info: Powershare Support: Enabled.
- Requires Powerwall 3 and Wall Connector; delivers up to 11.52 kW continuous.
🔎 Why it matters: It defines which Model 3 and Model Y can back up the home with Powerwall 3, depending on order date (from October 1, 2026 in the U.S.) and not on a software update.
📈 Upside: Powershare delivers up to 11.52 kW continuous, the same as Cybertruck and far above the 2.4 kW limit of V2L.
📉 Risk: Cars without the required hardware cannot add it through software, and Tesla has not announced retrofits for them.
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