Powerwall 3,
and everything around it.
Powerwall, Backup Gateway, Wall Connector and the Tesla app. Designed, installed and configured by Tesla-certified installers.
It starts with your roof.
All-black panels generating energy throughout the day.
Inside the Powerwall 3
Inverter and Battery, in one.
An all-in-one solution.
Powerwall 3
mounted to the wall.
Storing surplus energy for later use.
Control from your mobile device.
One app for generation, storage and usage.
Keeps your solar for the evening
Stores what your panels make by day, for when you get home.
Solar inverter built in
One unit on the wall, instead of a separate inverter and battery.
Backup in a power cut
With a Backup Gateway fitted, the circuits we agree with you keep running.
One app for home and car
Solar, battery, home, grid and your Tesla, side by side.
Stores your energy for when you need it.
Tesla's home battery puts a built-in solar inverter and 13.5kWh of storage in one quiet, weatherproof unit.
- Charges on cheap overnight rates and runs your home on stored energy through peak hours
- 3 independent solar inputs on the built-in inverter
One slim unit, indoors or out.
Powerwall 3 mounts on a wall or stands on the floor, inside or outside: a garage, a utility room or an external wall. We agree the position with you at design stage.
- Floor or wall mount, indoors or outdoors
- Quiet in use: typically under 50dB(A) at 1 metre
Control it from the Tesla app.
Solar production, battery level, home consumption, grid flow and EV charging in one beautifully polished app. If you drive a Tesla, your car lives there too.
- Storm Watch charges Powerwall to full when severe weather is forecast
- Savings mode shifts your energy use to the cheapest hours of your tariff
- Charge on Solar tops up a Tesla with your excess solar
One app, and everything it connects to.
What it does brilliantly
- The most polished, reliable interface in home energy. Effortless for non-technical users
- Live energy flow between your solar, Powerwall, home, grid and car
- Car, charger and battery in a single app if you're in the Tesla ecosystem
- Change modes and your backup reserve from anywhere
- Alerts the moment the grid goes down and your home switches to Powerwall
- Clear historical data on production, usage and self-sufficiency
What it works with
- Tesla Wall Connector: charges any Type 2 electric car, managed from the same app
- Charge on Solar: tops up a Tesla with surplus solar instead of exporting it
- Time-of-use tariffs: Time-Based Control charges on cheap rates and runs your home on stored energy at peak
- Storm Watch: fills Powerwall ahead of severe weather so you are ready for a power cut
- Home Assistant: supported through Home Assistant's Tesla integrations
- Over-the-air updates: new features arrive automatically after installation
Expanding Powerwall
- Per unit 13.5kWh usable
- Add Up to 3 more Powerwall 3 units, plus up to 3 Expansion units
- Maximum 94.5kWh across seven units
Specifications are indicative; exact figures are confirmed in your tailored Powergy proposal.
Room to grow.
Start with one Powerwall 3 and add more as your needs change. If you think you'll expand, tell us at design stage and we'll position and size everything to make it easy.
Power in a power cut.
Backup needs a Backup Gateway 2. It sits between the grid and your home, senses an outage and switches over automatically. Which circuits stay on depends on how your system is designed, and we agree that with you before installation.
- Automatic switchover: detects a power cut and moves your home to battery quickly
- Configurable backup reserve, so a chosen share of the battery is always held for outages
- Whole-home metering that gives the Tesla app its complete energy picture
Backup Gateway 2
- Role Outage detection, grid disconnection and monitoring
- Switchover Automatic on outage detection
- Backup coverage Whole home or selected circuits, by design
- Battery expansion Works with multi-Powerwall systems
- Metering Whole-home, live in the Tesla app
- Installation Wall mounted, indoor or outdoor, at the incoming supply
- Warranty Covered by Tesla's 10 year Powerwall warranty
Specifications are indicative; exact figures are confirmed in your tailored Powergy proposal.
Full specifications.
Powerwall 3
- Usable capacity 13.5kWh
- Inverter Integrated, 3 solar inputs (MPPTs)
- Scalability Up to 4 Powerwall 3 units plus 3 Expansion units, up to 94.5kWh
- Backup With Backup Gateway 2: whole home or selected circuits, by design
- Installation Floor or wall mount, indoor/outdoor
- Noise Typically under 50dB(A) at 1m
- Product warranty 10 years (Tesla)
Specifications are indicative; exact figures are confirmed in your tailored Powergy proposal.
Works with
- EV charging Tesla Wall Connector, for any Type 2 car
- Solar to car Charge on Solar, with Powerwall and a Tesla car
- Smart tariffs Time-of-use pairing, advised at handover
- Home Assistant Supported through Home Assistant's Tesla integrations
- Tesla vehicles Home and car side by side in the app
- Updates Over-the-air software updates from Tesla
Powerwall questions, answered.
Do I need a Backup Gateway?
Only if you want backup power during grid outages. Powerwall stores solar and cheap-rate energy to cut your bills either way; the Backup Gateway adds automatic switchover, so the circuits we agree with you keep running in a power cut. We'll help you decide whether backup is right for your home.
Can I add more storage later?
Yes. A system can grow to four Powerwall 3 units plus three Powerwall 3 Expansion units, up to 94.5kWh in total.
Does the Wall Connector only charge Teslas?
No. It uses the standard Type 2 connector and charges any modern EV. Charge on Solar, which fills the car with spare solar, works only with a Tesla car, a Powerwall and solar without an export limit.
Will Powerwall work with my existing solar panels?
In most cases, yes. Powerwall 3 can be retrofitted alongside existing arrays, or we can design a complete new all-black array around it. Your tailored proposal confirms which route suits your setup.
Read the guide.
Your system in the app: Tesla and mySigen
What the Tesla app and mySigen show you, the settings worth knowing, and what we set up with you at handover.
4 min read Battery StoragePowerwall 3 vs SigenStor: how to actually choose
We install both. Here's the decision framework we use with real customers, not a spec sheet shootout.
6 min read Battery StorageAdding a battery to solar you already have
How a battery joins an existing system, what we check first, and what it means for the Feed-in Tariff, paperwork and VAT.
5 min readA Powerwall system, designed for your home.
Free, no-obligation design and quote from a Tesla Premium Certified Installer.
Start my home energy design