A standard Powerwall 3
Connects to one phase. On a three-phase home, Tesla's Australian install manual says it backs up only the loads on one chosen phase in a blackout.
Powerwall 3 three phase: all you need to know
Powerwall 3P is Tesla's three-phase Powerwall 3. It's here, and you can order it now from Sunstak.
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1. What Powerwall 3P is
Tesla's three-phase version of Powerwall 3, made for homes with a three-phase power supply. With a Tesla Backup Gateway 2, it keeps your home powered in a blackout.
- 13.5 kWhUsable storage
- Up to 15 kWContinuous output
- 20.4 kWpSolar input4 MPPTs
- 10 yearsTesla warrantyLabour and hardware
- 0.2 m²Floor footprint
- 60 cmFlood water it withstands
2. Who Powerwall 3P is for
Homes that run on three-phase power.
Powerwall 3P
Built for three-phase loads, with a one-second peak of 21 kW. Three-phase equipment such as a three-phase solar inverter sits on the non-backup side of a standard Powerwall 3.
Not sure what you have?
Your site visit answers it. We check your switchboard and tell you which Powerwall fits.
3. Powerwall 3 and Powerwall 3P side by side
| Property | Powerwall 3 | Powerwall 3P |
|---|---|---|
| Connects to | One phase | All three phases |
| Blackout backup on a three-phase home | Loads on one chosen phase | Three-phase loads, with Backup Gateway 2 |
| Usable energy | 13.5 kWh | 13.5 kWh |
| Solar inputs | 3 | 4 |
| Weight | 130 kg | 138 kg |
| Works alongside Powerwall 2 | Yes | No |
- Powerwall 3. Tesla Australia: Powerwall page, Powerwall 3 install manual, and Powerwall 3 Compatibility With Powerwall 2, read 26 October 2026
- Powerwall 3P. Tesla Powerwall 3P datasheet, Australia and New Zealand edition, and Tesla Support Australia, read 26 October 2026
4. Powerwall 3P specifications
Figures from Tesla's Australia and New Zealand Powerwall 3P datasheet.
| Property | Powerwall 3P |
|---|---|
| Supply | Three phase, 230/400 V, 50 Hz |
| Usable energy | 13.5 kWh |
| Continuous output | Up to 15 kW at 25°C or cooler with enough solar. Up to 11.5 kW without solar or in higher temperatures |
| Output options | 15, 11.5, 10 or 5 kW, set at install |
| Peak output (1 second) | 21 kW for three-phase loads, 7.4 kW for single-phase loads |
| Solar input | Up to 20.4 kWp, 4 solar inputs (MPPTs) |
| Charge power | 5 kW, or 8 kW with Expansion units |
| Efficiency | 98.4% solar to home or grid, 90% solar to battery to home or grid |
| Add storage | Up to 3 Powerwall 3 Expansion units, 13.5 kWh each |
| Largest system | 4 Powerwall 3P units and 3 Expansion units: up to 60 kW and 94.5 kWh |
| Operating range | −20°C to 50°C (output may reduce above 40°C) |
| Weather rating | IP67 battery and electronics, IP55 wiring compartment |
| Noise at 1 m | Under 50 dB(A) typical |
| Size and weight | 1105 × 609 × 193 mm, 138 kg |
| Mounting | Floor or wall, indoor or outdoor |
| Backup | Needs Tesla Backup Gateway 2 |
| Monitoring | Tesla app, over Wi-Fi, Ethernet or 4G |
| Warranty | 10 years |
- Tesla Powerwall 3P datasheet, Australia and New Zealand edition, read 26 October 2026
5. Adding Powerwall 3P to what you already have
Your existing solar can stay
Tesla says Powerwall 3P works with all major solar inverter brands. New panels can wire straight into its four built-in solar inputs, without panel optimisers.
Ordered a Powerwall 3?
Tesla asks you to talk to your Tesla Certified Installer about switching an order that is still waiting to go in. If Sunstak is fitting yours and your home is three-phase, call us before install day.
Powerwall 2 or Powerwall 3
Tesla says Powerwall 3P can't be combined with Powerwall 2 or Powerwall 3 units. See your options on our Powerwall 3 page and Powerwall Expansion page.
6. What the federal discount is worth, by battery size
The Cheaper Home Batteries discount, worked out for each size. You claim it once per property, so the size you install is the size you claim on. Your accredited retailer takes it off your quote at the point of sale, so there is no separate claim afterwards, and the rate steps down every six months until 2030.
| Battery configuration | Usable storage capacity | Estimated federal discount | Extra discount for the next unit |
|---|---|---|---|
| 13.5 kWh | $3,367 | ||
Most popular | 27 kWh | $5,476 | +$2,109 |
| 40.5 kWh | $6,105 | +$629 |
| 54 kWh | $6,438 | +$333 |
Indicative discounts only. Eligibility, installation date and STC value affect the final amount. Your quote will confirm the discount that applies.
Rates as at 29 July 2026 · Clean Energy Regulator · installs to 31 December 2026
The federal Cheaper Home Batteries Program applies to batteries on the Clean Energy Council approved list at the time of installation. Your quote confirms what applies to your install. Read how it works on our federal battery discount page.
See what Powerwall 3P costs for your home
Our instant quote now prices three-phase homes. Pick three phase and see your own figure.
Get a free instant quote nowHow we work
Share your energy bills
Send us a summer bill and a winter bill, and tell us when you use the most energy. This helps us design around your household.
Talk to an Energy Geek
During a home visit or phone consultation, we discuss your goals and review your roof, switchboard and meter.
See your system design
Our engineer designs your system in house. You’ll see where the equipment will go and understand why it suits your home.
Review your quote
Your quote clearly lists equipment, model numbers, inclusions and exclusions. Take your time to review it. We only order once you approve.
Get ready for installation
We explain what to expect on the day, including any planned power interruptions and how long they should last.
Enjoy ongoing support
We get your system running and set up your monitoring app. For questions, service or warranty help, the same team is here after installation.
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Powerwall 3P questions
What is the Powerwall 3 three-phase version?
The Powerwall 3 three-phase version is called Powerwall 3P. Tesla built Powerwall 3P for homes with a three-phase power supply, with the battery, inverter and four solar inputs in one unit. Each Powerwall 3P stores 13.5 kWh and supplies up to 15 kW of continuous power.
Can I get Powerwall 3 on three-phase power?
Yes. A standard Powerwall 3 can go on a three-phase home, and in a blackout Tesla's install manual says it backs up the loads on one chosen phase. Powerwall 3P, Tesla's three-phase model, connects to all three phases and supplies three-phase loads.
Can I get Powerwall 3P in Canberra now?
Yes. Powerwall 3P is here, and Sunstak installs it across Canberra, the ACT and nearby NSW towns. Book a site visit and your quote sets out the system, price and install plan for your home.
How much does Powerwall 3P cost in Canberra?
Your installed price for Powerwall 3P depends on your switchboard, wall location and the circuits you want backed up. Your quote shows the installed price for your home. Book a site visit at sunstak.com.au/site-visit to get one.
How much energy does Powerwall 3P store and supply?
Powerwall 3P stores 13.5 kWh and supplies up to 15 kW continuously at 25°C or cooler with enough solar, or up to 11.5 kW without solar. Tesla lists a one-second peak of 21 kW for three-phase loads. Up to three Powerwall 3 Expansion units add 13.5 kWh each.
Can I add Powerwall 3P to my Powerwall 2 or Powerwall 3?
No. Tesla says Powerwall 3P can't be combined with Powerwall 2 or Powerwall 3 units. A Powerwall 3P system grows with Powerwall 3 Expansion units or more Powerwall 3P units, up to 94.5 kWh in total.
Can Powerwall 3P units be stacked?
No. Tesla's installation manual says Powerwall 3P units are mounted side by side. Up to three Expansion units can stack behind the first Powerwall 3P on the floor, or hang on the wall next to it.
How big can a Powerwall 3P system get?
Up to four Powerwall 3P units on one Backup Gateway 2, plus up to three Expansion units on the first Powerwall 3P. That comes to up to 60 kW of power and 94.5 kWh of storage.
Does Powerwall 3P work with solar optimisers?
Not on panels wired straight into Powerwall 3P. Tesla's installation manual says panel optimisers on that solar can cause nuisance tripping. They can stay on solar that runs through its own inverter.
Does Powerwall 3P work with my existing solar?
Yes. Tesla says Powerwall 3P works with all major solar inverter brands and a range of existing system sizes. Powerwall 3P also has four built-in solar inputs that take up to 20.4 kWp of new panels. Panel optimisers can't go on panels wired straight into those inputs.
Do I need a Tesla Gateway with Powerwall 3P?
Yes. Tesla says Powerwall 3P needs a Gateway for monitoring and backup. The Backup Gateway 2 detects a grid outage, disconnects your home from the grid and switches it to battery power.
Does Powerwall 3P come with energy management software?
Yes. Tesla Home comes standard with every Powerwall 3P. It is Tesla's energy management software, and it decides when your home draws from solar, Powerwall or the grid. You set your energy goal and how much charge to keep for outages in the Tesla app.
Can I charge an EV on three-phase power with Powerwall 3P?
Yes. Tesla's Wall Connector supports single-phase and three-phase power and works with most EVs that use a Type 2 connector. You can schedule charging and check its status in the Tesla app.
What warranty comes with Powerwall 3P?
Tesla covers Powerwall 3P with a 10-year warranty with full labour and hardware coverage, the same period as Powerwall 3. Sunstak registers your system with Tesla at commissioning, and Tesla activates your warranty on registration.
Does the federal battery discount apply to Powerwall 3P?
The federal Cheaper Home Batteries Program applies to batteries on the Clean Energy Council approved list at the time of installation. Your Sunstak quote confirms what applies to your install.
Book your site visit
Book your Powerwall 3P site visit at sunstak.com.au/site-visit or call 02 5127 5000.
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