Your driveway is now a power plant.
When the grid goes down, Powerwall 3 takes over automatically and your car keeps it going for days. No fuel to store, no engine to start, no noise.
Generators now come with wheels.
The battery in your garage is bigger than most home batteries. With Powershare and Powerwall 3, it works for your house when you need it and drives you to work when you don't.
| Gas generator | Your car + Powerwall 3 | |
|---|---|---|
| Fuel | Gasoline or propane you buy, store and refill | The electricity you already charge with |
| When the power goes out | Someone starts it and runs the cords | Powerwall 3 takes over automatically |
| Noise and fumes | A running engine outside your window | Silent, with no exhaust |
| Upkeep | Oil changes and test runs | Software updates |
| The rest of the year | Sits in the garage | Drives you everywhere |
Three steps between you and a dark house
The grid goes down
Powerwall 3 senses the outage and takes over automatically, so your lights, fridge and Wi-Fi stay on.
Your car steps in
Plugged into a Universal or Gen 3 Wall Connector, a compatible car shares its battery with your home through Powershare.
Recharge and repeat
When the grid comes back, everything recharges. Add solar and you can recharge during a long outage too.
Does your car support Powershare?
Check in 30 seconds from the driver's seat.
- On the touchscreen, tap Controls (or Settings), then Software.
- Tap Additional Vehicle Info.
- Look for Powershare Support: Enabled.
| Vehicle | Powershare home backup |
|---|---|
| Cybertruck | Supported |
| Model 3 / Model Y ordered on or after Oct 1, 2026 (U.S.) | Supported |
| Model 3 / Model Y ordered earlier | Some are, so check the screen |
| Model S / Model X | Not currently supported |
Why Blossom Solar
- Local Washington solar, battery and electrical team
- Powerwall 3, Wall Connector and solar from one crew, from permit to power-on
- In Washington, backup is about keeping the lights on through storms and outages
Get your Powerwall 3 backup quote
Tell us about your home and your car. We'll confirm Powershare compatibility and size a Powerwall 3 backup system for you.
*Tesla estimates a Model 3 or Model Y adds over two days of backup for a home using 30 kWh a day, starting from a 90% charge; Cybertruck's larger battery goes further. Backup duration varies with vehicle state of charge, home energy use and conditions. Powershare home backup requires a compatible vehicle, Powerwall 3, and a Universal or Gen 3 Wall Connector. Powershare support depends on vehicle hardware and can't be added with a software update. U.S. Model 3 and Model Y vehicles ordered on or after October 1, 2026 are capable. Earlier vehicles vary, so confirm under Software > Additional Vehicle Info. All Cybertruck vehicles are supported. Model S and Model X are not currently supported. Blossom Solar is an independent Tesla Energy Certified Installer. Tesla, Powerwall, Powershare, Wall Connector, Model 3, Model Y, Model S, Model X and Cybertruck are trademarks of Tesla, Inc.