Tesla Powerwall 3 Installation in Melbourne
Take control of your home energy with a Tesla Powerwall 3, supplied and installed by Sunstainable’s in-house Coburg team — whether you’re adding one to a new solar system or retrofitting one to a system you already have.
What is the Tesla Powerwall 3, and can it be added to an existing solar system?
The Tesla Powerwall 3 is Tesla’s home battery with a built-in solar inverter, designed to store surplus solar power for use at night, shift load to cheaper electricity periods, and provide back-up power during a blackout. It can generally be installed alongside a new solar system or retrofitted to an existing one, subject to a site assessment of your current inverter and switchboard. Sunstainable’s in-house team confirms compatibility and current pricing at quote stage rather than off a generic spec sheet.
Value Proposition Grid
Built-in inverter, one less box on the wall
The Powerwall 3 integrates its own solar inverter, simplifying the install compared to a separate battery-plus-inverter setup.
Installed by our own Coburg team, not a subcontractor
The same team that assesses your home does the fitting and grid-connection paperwork — no handover gap.
Works with a new system or an existing one
Adding a Powerwall 3 to solar you already have is one of the most common jobs we quote — see our See our guide to retrofitting a Tesla battery to existing solar
Back-up power built in
If the grid goes down, the Powerwall 3 keeps essential circuits running — not just a bill-saver, a genuine blackout safeguard.
Tesla Powerwall 3 Specifications
| Specification | Tesla Powerwall 3 |
| Usable capacity | 13.5 kWh |
| Continuous power output | Up to 11.5 kW (integrated inverter) |
| Backup capability | Whole-home or partial backup, depending on switchboard setup |
| Expansion | Scalable with additional expansion packs/units for lar |
| Mounting | Floor or wall mounted |
| Operating use | Indoor or outdoor |
Because the Powerwall 3 has its own integrated inverter, it’s a genuinely different install to the earlier Powerwall generation already familiar to a lot of Melbourne homeowners – which is exactly what the next section covers.
Tesla Powerwall 2 vs Powerwall 3: What's Different
| Powerwall 2 | Powerwall 3 | |
| Inverter | Separate solar inverter required | Built-in solar inverter |
| Continuous power | Lower continuous output | Higher continuous output (see spec table above) |
| Best suited to | Homes already set up with a compatible existing inverter | New installs, or upgrades where the inverter is also due for replacement |
If you’re not sure which generation makes sense for your home, that’s exactly the kind of question our team answers as part of a free site assessment rather than over the phone from a spec sheet.
What's Involved in Tesla Powerwall 3 Installation?
- Assessment: we check your existing solar (if any), inverter, switchboard capacity and household usage.
- Compatibility and sizing: confirming whether a Powerwall 3 suits your setup as-is, or alongside a new residential solar system.
- Rebate check: confirming current federal battery rebate eligibility as part of your quote, not as an afterthought.
- Install and commissioning: carried out by our own in-house Coburg team, including grid connection paperwork.
Tesla Powerwall 3 Installers Servicing Coburg and Melbourne
Sunstainable’s in-house team is based in Coburg, where we’ve operated since 2010, and installs Tesla Powerwall systems for homes across Coburg, Coburg North, Brunswick, Pascoe Vale, Thomastown, Fawkner, Preston, Strathmore, Reservoir and Oak Park, plus larger installations further out in Glen Iris, Camberwell and Balwyn.
Tesla Powerwall 3 Indicative Pricing
Before you read this section: the figures below relate to the federal battery rebate only, not a full installed price for a Tesla Powerwall 3. All pricing is indicative and subject to a site inspection, your grid connection requirements, and final system design. It is not a quote until we’ve assessed your property.
| What Affects Your Powerwall 3 Price | Detail |
| Federal battery rebate | Currently reduces the upfront cost of a typical eligible household battery by roughly $2,700 or more, applied at quote stage |
| Existing solar system | Retrofitting to a system you already have may cost differently to installing alongside new panels |
| Switchboard/inverter work | Some homes need minor additional work before a Powerwall 3 can be fitted (confirmed at assessment, not assumed) |
These figures are a guide to what shapes your price, not a quote for your home. Every Powerwall 3 installation is priced individually once we’ve assessed your existing system, roof, switchboard and rebate eligibility.
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Sunstainable has installed solar and battery systems from Coburg since 2010. The same in-house team assesses, quotes and installs every Powerwall 3 job.
Frequently Asked Questions
How much does a Tesla Powerwall 3 cost installed in Melbourne?
It depends on your existing setup, switchboard requirements and current rebate eligibility, which is why we don’t quote a flat price. The federal battery rebate currently reduces the upfront cost of a typical eligible battery by roughly $2,700 or more. Get a precise, no-obligation quote for your specific home.
Can I add a Powerwall 3 to my existing Powerwall 2 installation?
Yes, Powerwall 3 batteries are now compatible with existing Powerwall 2 batteries.
What are the dimensions of the Tesla Powerwall 3?
See the battery storage page for exact Tesla Powerwall Specs.
What's the difference between Tesla Powerwall 2 and Powerwall 3?
The main difference is the inverter: Powerwall 3 has a built-in solar inverter and a higher continuous power output, while Powerwall 2 needs a separate inverter. Which one suits your home depends on your existing solar setup. See our comparison above!
Can I add a Tesla Powerwall 3 to solar panels I already have?
Ready to Talk Tesla Powerwall 3?
Book a free site assessment and our in-house Coburg team will confirm compatibility, current rebate eligibility, and an exact price for your home – no call centre, no generic package.
All pricing referenced on this page is indicative only and subject to a site inspection, your grid connection requirements, and final system design. Your exact price is confirmed after we’ve assessed your property.