Tesla Powerwall 3
The battery everyone knows, now with the inverter inside.
Powerwall 3 puts a 13.5 kWh battery and a solar inverter in one sealed unit, so your panels plug straight into it. Pair it with Tesla's Backup Gateway 2 and the house keeps running when the grid drops out.
13.5 kWh
usable in every Powerwall 3
20 kW
of solar on 3 MPPTs, inverter built in
185 A
motor start, for pumps and air con
54 kWh
with three Expansion units
Why we fit Tesla
One sealed box, one beautiful app.
Powerwall 3 does the job of a solar inverter and a battery in one slim, IP67 unit, so there's no separate inverter on the wall. It takes up to 20 kW of solar across three MPPTs, and it can start heavy loads like a pump or a split system.
The Tesla app shows your solar, battery and home live, and sets the backup reserve in a few taps. We see the system too, so a fault alert comes to us.
- Up to 11.04 kW of continuous power from one unit
- Add up to three Expansions for 54 kWh
- Whole home backup with Backup Gateway 2
Datasheet
The models we install.
Powerwall 3 and the parts that go with it. Powerwall 2 was the model before; it has been replaced.
Powerwall 3 system
| Part | What it does | Key figures | Size and weight |
|---|---|---|---|
| Powerwall 3 | Battery and solar inverter | 13.5 kWh usable, up to 11.04 kW out, 20 kW solar in, 3 MPPTs | 1105 x 609 x 193 mm, 130 kg |
| Powerwall 3 Expansion | Extra battery behind a Powerwall 3 | 13.5 kWh each, up to 3 per Powerwall 3 | 1105 x 609 x 168 mm, 110 kg |
| Backup Gateway 2 | Switches the house to the battery in a blackout | Up to 100 A single phase service | 584 x 380 x 127 mm, 11.4 kg |
- 97.5% solar to home efficiency
- IP67 battery and electronics
- Runs −20 to 50 °C
- Arc fault protection built in
- Up to 4 Powerwall 3s per home
Figures from Tesla’s own datasheets, as published 2025 (AU datasheet) and May 2026 (AU warranty). The maker’s PDF opens on their website. Your design picks the model that suits your roof and your usage, and we confirm it on site.
Every feature
All of it, grouped.
All in one
- Battery and solar inverter in one unit
- Up to 20 kW of solar on 3 MPPTs
- Up to 11.04 kW of continuous power
- No separate inverter on the wall
Blackout backup
- Whole home backup with Backup Gateway 2
- Starts motors up to 185 A locked rotor
- Backup reserve you set in the app
Grows with you
- Up to three Expansions behind one Powerwall 3
- 54 kWh from one Powerwall 3 and three Expansions
- Up to four Powerwall 3s per home
Built for outside
- IP67 sealed
- Runs from −20 to 50 °C
- Arc fault protection on the solar inputs
Warranty
- 10 years, 70% capacity at year 10
- Unlimited cycles for solar, time of use and backup
- Tesla's Australian office is in Sydney
- Claims go through us, not you
Every system comes looked after.
Whichever brand you pick, the same things come with it. Our licensed electricians install it, we watch it from here, and a fault under warranty is fixed at no cost to you.
Included with every system
- High quality installation by licensed electricians
- All-black panels on black rail
- Remote monitoring, set up on install day
- Fault alerts that come straight to us
- Warranty repairs at no cost to you
- Warranty claims handled by us
- Rebates and paperwork done for you
Straight answers
Questions we get asked.
Something not here? Ring or text 0468 179 539 any hour and ask.
Powerwall 2 or Powerwall 3?
We install Powerwall 3. Powerwall 2 has been replaced, is not eligible for the federal battery rebate, and some units sold between November 2020 and August 2025 were recalled. If you already have one, ring us and we'll check it for you.
Does it need the internet?
For the full 10 year warranty, yes: Tesla needs it online and registered, otherwise the cover can drop to 4 years. We connect it on install day.
Will it back up my whole house?
With Backup Gateway 2, yes, on a single phase home. Powerwall 3 is a single phase battery, so on a three phase home it backs up one phase. We'll tell you what that means for your switchboard.
Can I add more later?
Yes. Up to three Expansion units go behind one Powerwall 3, for 54 kWh. One thing to know: with Expansions fitted, charging is limited to 5 kW until Tesla's promised firmware update arrives.
Will it get the federal battery rebate?
We confirm the exact battery against the approved list on your quote, and the designer prices the rebate for your install date. The rebate steps down on 1 January.
See a Powerwall 3 sized for your home.
Draw it, price it, too easy. Design your own system on your own roof and get a real installed price in minutes. Rather talk it through first? Request a call back and we will size it on your actual usage.