Tesla Powerwall 3
buying guide

While the Powerwall 3 offers significant improvements in power output, it’s the addition of an integrated solar inverter that sets it apart from its predecessor. The in-built inverter eliminates the need to buy a separate inverter, therefore effectively reducing the installation price of the Powerwall battery when adding a battery to an existing system.

The Powerwall 3 checks plenty of boxes for potential buyers – but is it the right battery for you? To help you decide if the Powerwall 3 is the best battery for your home, we’ve compiled a list of its features, expected installation price and its eligibility for claiming battery rebates.

Powerwall 3 features

The Powerwall 3 is an integrated solar and battery system intended to meet the usage requirements of most residential customers in Australia.

The Tesla Powerwall 3 features many benefits that make it appealing for Australian homeowners, these include:

• All-in-one unit with in-built inverter
• Ability to provide backup power
• Can use Storm Watch to charge battery during severe weather
• Can provide up to 11.04 kW of continuous power
• Can be expandable to provide up to 40.5 kWh of storage
• Can be combined with up to 20kW of solar panels
• Uses safer LiFEPO4 cells
• 10-year warranty

At a glance, the Powerwall 3 would seem to be a direct replacement for the Powerwall 2, however, the addition of an integrated solar inverter means that the Powerwall 3 can now function as a standalone battery and inverter. For existing solar panel owners, this makes the Powerwall 3 a compelling option as most other batteries require the addition of a hybrid inverter at extra cost.

The Tesla Powerwall 3 delivers more than twice the continuous power output than the Powerwall 2. The Powerwall 3 provides 11.04 kW Continuous Power Output (AC) and 11.04 kW Peak Power Output – up from 5 kW and 7 kW respectively in the Powerwall 2.

The Powerwall 3 can also handle up to 20kW of solar DC input and be combined with two additional Powerwall 3’s to create 40.5 kWh of storage. Note: The Powerwall 3 cannot be added to a system with a Powerwall 2 battery.

Most solar batteries last 10 years and the Powerwall 3 is no different. Tesla provides a 10-year warranty on the battery.

Tesla Powerwall 3 price

The federal government solar battery rebate has dramatically reduced the price of new home batteries. The average price for the supply and installation of the Tesla Powerwall 3 is now between $12,000 - $14,000. Unlike other batteries, the Powerwall 3 price doesn’t vary if you install it with solar panels vs adding it to your existing system.

The table below shows the average price of a Powerwall 3 battery with different install options:

The prices in the table above reflect the Australian average. Pricing will vary based on your individual circumstances including: location and ease of install.

Powerwall 3 price breakdown pre-installation

Australian pricing for the Tesla Powerwall 3 unit starts at $11,200 which includes the 13.5 kWh battery and integrated inverter. This price does not include the compulsory Tesla Backup Gateway unit which costs an additional $1,950, nor the cost of installation.

• Powerwall cost: $11,200
• Battery rebate: ($4,200)
• Gateway cost: $1,950
• Total price: $8,950*

*These costs do not include delivery, installation, and other costs and fees. When comparing pricing, it’s important to review what is included.

Rebates that apply to the Powerwall 3

The Telsa Powerwall 3 is among the Clean Energy Council’s list of approved batteries and is eligible for installation under the national Cheaper Home Batteries scheme.

Federal rebate reduces the Powerwall 3 cost

In early 2026, the Australian government battery rebate reduces the cost of the Powerwall 3 by around $4,200. The rebate amount is set to decrease twice yearly, the next reduction coming in May 2026.

State rebates

New South Wales residents that connect their battery to a Virtual Power Plant (VPP) can apply for the NSW VPP rebate and receive up to $550 off the upfront cost of the Tesla Powerwall 3. The installation of two Powerwall 3's can qualify for an incentive worth up to $1,500.

The Powerwall 3 is also eligible for the WA battery rebate. The WA incentive is in addition to the federal rebate and can save an extra $1,300 - $3,800 off the install cost of a new Tesla.

Residents of Tasmania and the ACT, can apply for an interest-free loan up to a certain amount to help pay for the Powerwall 3.

Tesla Powerwall 3 rebate

In addition to state and federal rebates, In late 2025, Tesla launched its own rebate to celebrate 1 Million installations worldwide.

The Tesla rebate is worth up to $1,500 or, $750 per Powerwall 3. It should be noted the reward is paid in to a Visa Reward Card and it must be claimed via the Tesla website.

Powerwall 3 rebate details

What you need to know about the Tesla Powerwall 3 rebate:

• You must order the Powerwall before 31st March 2026
• The battery must be installed before 30th September 2026
• The reward is applied to a Visa Rewards Card
• Rebate is worth $750 per Powerwall up to $1,500

For full details, visit the Tesla website.

Tesla Powerwall 3 specifications

The specifications of the Tesla Powerwall 3 battery are published below:

• Release date: August 16, 2024 (Australia)
• Type: All-in-one solar and battery system (DC-coupled)
• Capacity: 13.5 kWh usable energy storage
• Continuous power output: Up to 11.04 kW AC per unit
• Weight: ~132 kg
• Warranty: 10-year limited warranty
• Compatibility: Compatible with previous generation Tesla products and other non-branded Tesla batteries.
• Round trip efficiency: 97.5%
• Solar input: Up to 20 kW DC of solar input
• Price: From $11,900. This price does not include the required Tesla Gateway unit

Powerwall 3 dimensions

The Tesla Powerwall 3 is 1.05m tall x 60.9cm wide with a depth of 1.93 cm. The Powerwall 3 unit weighs 124kg, but when installed with the glass protector sheet and wall brackets it weighs a total of 132kg.

Powerwall 3 capacity

With a storage capacity of 13.5 kWh, the Powerwall 3 can typically store enough energy to power the average Australian home’s night time electricity needs. It can be a suitable battery solution for 5kW, 6.6kW, 8kW and 10kW systems.

Additional Powerwall 3 units can be combined to generate even more storage capacity, up to a maximum of 40.5 kWh (3 units in total). The maximum solar panel system it can be paired with is a 20kW system.

Powerwall 2 vs. 3 – side by side comparison

Our Tesla Powerwall 2 vs 3 – Side by side comparison article can provide you with a full breakdown of the key differences between the Powerwall 2 and 3 units. At a glance, here are the key differences between the units.

In a side-by-side comparison, the Tesla Powerwall 3 is the clear winner in almost all aspects bar one - modularity. Whereas Powerwall 3 allows for 3 batteries to be installed for a total energy storage capacity of 40.5 kWh, the Powerwall 2 allows for up to 10 batteries to be installed for a total (usable) storage capacity of 135 kWh.

When we consider the average Australian household uses around 15 kWh of electricity per day, it’s fair to say that the potential 135 kWh storage capacity offered by the Powerwall 2 will appeal to a very small portion of the market.

For buyers tossing up between the Powerwall 2 and Powerwall 3 – the decision is likely to come down to one key factor – whether you need an integrated inverter. The Powerwall 3 comes with a built-in solar inverter, allowing for direct solar integration, while the Powerwall 2 requires a separate inverter, making it better suited for homes that already have an existing solar setup.

Should you consider the Tesla Powerwall 3?

Specs, pricing, and Powerwall 2 comparisons to one side – is the Tesla Powerwall 3 worth buying?

Well, just like most things solar – it depends on your circumstances and your needs. The circumstances are different depending on:

• Is buying a battery purely a financial decision?
• Do you need backup power?
• Do you already own solar panels?

Purely a financial decision

If your motivations for installing a solar battery are purely financial, then the new rebate will be music to your ears. Payback periods have dropped considerably and the financial case for installing a Powerwall 3 is more compelling than ever.

Interested in backup power

If providing backup power during a blackout is your prime motivation for installing a battery, then the Tesla Powerwall 3 is one of the best options available in Australia. The battery can be configured to provide full or partial backup of your home’s circuits.

Already own solar panels

If you are an existing solar panel owner, then the Powerwall 3 is one of the more appealing battery options because it comes with a built-in inverter, meaning you don’t need to buy a separate hybrid inverter. Our analysis of solar battery prices shows that the Powerwall 3 is competitive with many leading brands.

Our verdict

The Tesla Powerwall 3 is a high-quality, versatile home battery. It is a great value unit that can provide backup power and is one of the best batteries available in Australia. Although, there are many good alternatives to the Powerwall 3 available in Australia.

For existing solar panel owners, the Powerwall 3 is an even more compelling option.

However, it may not be a good battery option, if:

• You have 3 phase power
• You have a complex roof layout
• You already own a Powerwall 2
• You want to add more storage in smaller increments