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

A white home battery carrying a lit Tesla mark, mounted on the dark blue horizontal cladding of a house wall, with its dark grey side rail, vent knockouts and service handle catching the light along the right-hand edge

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 configurationUsable storage capacityEstimated federal discountExtra discount for the next unit
13.5 kWh$3,367
Most popular27 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.

Two white Tesla home batteries standing side by side against a raw concrete retaining wall in bright daylight, with ornamental grasses along the top of the wall, the glazed corner of a house at the left and two upholstered chairs on the paving in front
  • 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
  • 4.9★From 216 Google reviews

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.

A person in a harness standing on a tiled roof holding a solar panel above their head against a blue sky, with another person's hands reaching up from the gutter below

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.

  • Tesla Powerwall Premium Certified Installer
  • New Energy Tech Consumer Code approved seller
  • SunWiz 2026 award: Best Rated solar installer, #2 Most Popular in the A.C.T.
  • Solar Accreditation Australia approved

★★★★★

Having used two other installers previously, the Sunstak experience is head and shoulders superior…
Raffaele WebbGoogle review
  • 4.9From 216 Google reviews
  • 5.0From 29 SolarQuotes ratings

Ask for a quote

How would you prefer to discuss your quote?

Start typing and pick it from the list.

What are you interested in?
Choose one or more
Tick as many as apply.
Is there solar on your roof already?

Roughly is fine. We’ll ring to confirm.

Or call 02 5127 5000