What the rebate takes off a Powerwall
The federal battery discount comes off your invoice on the day you buy, and there's nothing to claim back afterwards. The table below works it out for one, two, three and four Powerwalls.
Premium Tesla Powerwall Certified Installer since 2021

Solar battery rebate
The Cheaper Home Batteries discount, worked out for one, two, three and four Powerwalls. Only an accredited retailer can take it off the price, and we are one. Your address does not change any of these figures.
| 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
One Powerwall, or two?
The discount is worked out on how much usable storage you put in, so the size of the battery decides the size of the discount. Your home decides the size of the battery: what it draws after dark, whether you charge a car in the driveway, and how much of your roof is already working.

Most Canberra homes we quote land on one
One Powerwall 3 holds 13.5 kWh usable, which can carry the evening and the night in a home that is not also charging a car. The top row of the table is the whole federal discount on it, and there is nothing else federal to add. How the federal discount works covers what qualifies a household and how the money reaches your quote. Our Tesla Powerwall 3 price page has the installed price, before and after the discount.
Add an Expansion Pack to your Powerwall 3
An Expansion Pack adds storage behind your Powerwall 3's own inverter, and the second row of the table is what comes off one. We check that the unit on your wall takes one before we quote it. Read the Expansion Pack in full for the sizes and the fitting.
More than 900 Powerwalls, already on Canberra walls
The discount above is the same figure whoever fits your battery. We carry the switchboard check, the network application and the certificate paperwork.
- 2021Tesla Premium Installer since
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Canberra, or Wollongong?
The figures above are federal, and they are the same on both sides of the border. Each government adds something different beside them, so start with the one that covers your address.
Australian Capital Territory
If your home is in Canberra
The ACT runs its own loan scheme for households putting in solar and storage. See what it costs to borrow and who can apply.
New South Wales
If your home is in Wollongong, or anywhere in NSW
NSW runs its own scheme, on its own terms. See what the loan covers, who can apply and how to apply.

Installation backed by Sunstak
Sunstak master installers
Our master installers have completed at least 100 installations with 5/5 star reviews.
Clear scope and pricing
We'll confirm the scope, price and installation plan before work begins, so you know what's included and what to expect on the day. Any changes will be explained and agreed with you before we proceed.
Roof leak guarantee
If your roof leaks after our installation, we pay you $500 cash and fix it immediately.
Stock guarantee
If we can't supply the product specified in your design, we'll provide an upgrade at no extra cost.
Check your Powerwall rebate with us
Speak with one of our Energy Geeks today.


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Having used two other installers previously, the Sunstak experience is head and shoulders superior…
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