The Tesla Powerwall 3 price in Australia is about A$15,000 to A$17,000 fully installed for one 13.5 kWh unit before the federal battery discount (Solar Choice, September 2026), and an estimated A$11,200 to A$13,600 after it (Solar Cobber estimate: installer prices and the Solar Choice range less the discount), as at November 2026. Tesla Australia lists the hardware alone at A$11,220 including the Gateway, and each 13.5 kWh Expansion unit adds A$8,600 before installation.
This guide is independent desk research. Solar Cobber did not request quotes, contact Tesla or any installer, or accept payment. Published prices carry their source and month; our own calculations are labelled as estimates. For specifications and owner feedback, read our Tesla Powerwall 3 review.
Key facts
- As at 12 November 2026, Tesla Australia’s order page lists one Tesla Powerwall 3 (13.5 kWh) at A$11,220 including GST, the Gateway and accessories, and excluding delivery and installation.
- Tesla Australia lists a Powerwall 3 with one Expansion unit (27 kWh) at A$19,820 and with two Expansion units (40.5 kWh) at A$28,420 in November 2026, which makes each Tesla Powerwall 3 Expansion A$8,600 before installation.
- Published installed prices for one Tesla Powerwall 3 after the federal discount ranged from A$11,159 (Grow Energy, Victoria) to A$12,490 (Perth Solar Warehouse, Western Australia) when checked in November 2026.
- A 13.5 kWh Tesla Powerwall 3 installed between 1 May and 31 December 2026 earns about 91 small-scale technology certificates under the Cheaper Home Batteries Program, worth roughly A$3,400 to A$3,600.
- The federal factor falls from 6.8 to 5.7 certificates per usable kWh on 1 January 2027, which cuts the discount on a 13.5 kWh Tesla Powerwall 3 by roughly A$550 to A$600.
Tesla Powerwall 3 price list (November 2026)
One Tesla Powerwall 3 costs A$11,220 as hardware from Tesla Australia and an estimated A$11,200 to A$13,600 installed after the federal discount. The table shows Tesla Australia’s hardware prices next to installed prices published by two installers, checked on 12 November 2026.
| Configuration | Usable capacity | Tesla Australia hardware price (not installed) | Published installed price after federal discount | Federal discount (May to Dec 2026) | Solar Cobber estimate: installed before discount |
|---|---|---|---|---|---|
| 1 Powerwall 3 with Gateway | 13.5 kWh | A$11,220 | A$11,159 (Grow Energy, VIC) to A$12,490 (Perth Solar Warehouse, WA, 10 kW) | About A$3,400 to A$3,600 | About A$14,600 to A$16,100 |
| 1 Powerwall 3 plus 1 Expansion | 27 kWh | A$19,820 | A$16,974 (Grow Energy, VIC) | About A$5,500 to A$5,900 | About A$22,500 to A$22,900 |
| 1 Powerwall 3 plus 2 Expansions | 40.5 kWh | A$28,420 | A$24,274 (Grow Energy, VIC) | About A$6,100 to A$6,600 | About A$30,400 to A$30,900 |
Method for every estimate in this guide: the last column is Solar Cobber arithmetic (the published after-discount price plus the discount), not a quoted market price.
Solar Choice says a typical installation costs A$15,813 including the Gateway, with a 2026 range of A$15,000 to A$17,000 before state rebates (page updated September 2026). SolarCalculator puts supply and installation at A$12,500 to A$14,500 after the federal rebate (August 2026).
Why Tesla’s price looks lower than older guides
Tesla Australia’s A$11,220 hardware price includes the Gateway, which older guides list separately: SolarQuotes’ review still shows A$11,200 for the battery plus A$1,950 for the Backup Gateway 2. Tesla’s order page does not say any federal discount has been deducted, and says the final price comes from a Tesla Certified Installer.
Powerwall 3P price
Tesla does not publish a separate Australian price for the three-phase Powerwall 3P as at November 2026; its order page says pricing may vary with single-phase or three-phase supply. We could not confirm a published installed price.
What changes the price
The installed price moves by a few thousand dollars depending on the switchboard, the supply phase, the location and the installer.
- Gateway. A Gateway is required for backup power and grid isolation. Tesla’s A$11,220 price includes it; check that an installer quote does too.
- Built-in inverter. The Tesla Powerwall 3 contains a hybrid solar inverter, so a new system needs no separate one (SolarQuotes lists a 10 kW Sungrow hybrid at about A$3,600, May 2026).
- Three-phase supply. A standard Tesla Powerwall 3 is a single-phase battery. On a three-phase home it backs up one phase, and moving essential circuits onto that phase adds labour. See single vs three phase power for solar.
- Switchboard and site work. Switchboard upgrades, long cable runs and fire-rated backing are quoted per site.
- Output setting. Perth Solar Warehouse lists a 5 kW Tesla Powerwall 3 at A$11,990 installed after the federal rebate, A$500 less than its 10 kW price (October 2026).
How the federal battery discount applies
The Cheaper Home Batteries Program takes roughly A$3,400 to A$3,600 off one Tesla Powerwall 3 installed between 1 May and 31 December 2026. A small-scale technology certificate (STC) is a tradeable certificate that your installer sells and deducts from your invoice.
The working for one 13.5 kWh Tesla Powerwall 3, using the factors published by the Department of Climate Change, Energy, the Environment and Water (checked 12 November 2026):
- 13.5 kWh usable capacity x 6.8 certificates per kWh = 91.8, which gives about 91 certificates.
- 91 certificates x A$37 to A$40 each = A$3,367 to A$3,640.
- From 1 January 2027 the factor is 5.7: 13.5 x 5.7 = about 76 certificates, worth A$2,812 to A$3,040.
Certificate value: Demand Manager’s spot market showed A$39.60 per STC on 12 November 2026 and the Clean Energy Regulator’s Clearing House price is A$40. Installers may pass on slightly less, so this guide assumes about A$37 to A$40 per certificate.
Expansion units earn less per kWh because capacity from 14 to 28 kWh earns 60% of the factor and 28 to 50 kWh earns 15%. A 27 kWh system earns about 148 certificates (A$5,476 to A$5,920) and a 40.5 kWh system about 165 (A$6,105 to A$6,600), so the first Expansion adds only about 57 certificates and the second about 17. The program requires connection to rooftop solar and an accredited installer, and Tesla says a Tesla Certified Installer is needed to access the discount.
State help can stack in New South Wales and Western Australia; see our battery rebates by state guide.
Powerwall 3 expansion pack price
A Tesla Powerwall 3 Expansion unit costs A$8,600 as hardware from Tesla Australia, and published installed prices run from about A$5,800 to A$8,500 after the federal discount when it is bought with the main unit. The Expansion is a 13.5 kWh battery with no inverter that connects to a Tesla Powerwall 3.
Grow Energy’s listed prices imply about A$5,815 for the first Expansion installed with a new Tesla Powerwall 3 (A$16,974 less A$11,159, our subtraction). Perth Solar Warehouse lists A$8,490 installed. Grow Energy lists A$9,800 to add an Expansion to an existing Powerwall 3, and Tesla describes the federal rebate as available once per eligible household, so buying the Expansion with the main unit is usually cheaper.
Tesla Powerwall 3 vs rivals on price
The Tesla Powerwall 3 costs about A$1,900 to A$3,700 more installed than a similar sized Sungrow or Sigenergy battery, our comparison of published November and May 2026 figures. The table compares installed prices after the federal discount for batteries of about 13 kWh.
| Battery | Usable capacity | Installed price after federal discount | Price per kWh | Source and date |
|---|---|---|---|---|
| Tesla Powerwall 3 with Gateway | 13.5 kWh | A$11,159 to A$12,490 | About A$830 to A$925 | Grow Energy and Perth Solar Warehouse, November 2026 |
| Sigenergy SigenStor, single phase | 13 kWh | About A$9,300 | About A$720 | SolarQuotes, May 2026 |
| Sungrow SBR | 12.8 kWh | About A$8,800 | About A$690 | SolarQuotes, May 2026 |
| Market average, battery with inverter | 10 kWh | A$7,984 | A$798 | Solar Choice Battery Price Index, November 2026 |
The Sungrow SBR needs a separate hybrid inverter, so confirm whether a quote includes one. The Tesla price buys a built-in 10 kW inverter and strong backup power, but the premium is harder to justify on a three-phase home that wants every circuit backed up.
Is it worth it? A worked payback example
A Tesla Powerwall 3 pays for itself inside its 10-year warranty only for households that use most of its capacity every night (our own calculation, not a measured result).
Assumptions:
- Installed price of A$12,000 after the federal discount, inside the published A$11,159 to A$12,490 range.
- Usage rates of 33.1 c/kWh in Sydney (Ausgrid), 41.9 c/kWh in Adelaide and 28.0 c/kWh in Brisbane (Energex), the 2026-27 reference rates in our average electricity bill guide, and a 3 c/kWh feed-in rate.
- Round-trip efficiency of 89% (Tesla’s datasheet), no VPP income, no price rises and no degradation.
| Household | Energy used from the battery | Annual saving | Simple payback |
|---|---|---|---|
| Sydney, low evening use | 6 kWh a day | About A$650 | About 18 years |
| Sydney, typical | 10 kWh a day | About A$1,085 | About 11 years |
| Sydney, heavy evening use | 12.5 kWh a day | About A$1,355 | About 9 years |
| Adelaide, typical | 10 kWh a day | About A$1,405 | About 8.5 years |
| Brisbane, typical | 10 kWh a day | About A$900 | About 13 years |
A household that draws only 6 kWh a night does not recover the cost within the warranty. Time-of-use tariffs, VPP payments and price rises would shorten these paybacks, capacity fade would lengthen them, and backup power has a value the table does not count.
What to check on your quote
A Tesla Powerwall 3 quote should itemise the hardware, Gateway, federal discount and every site extra.
- The Gateway is listed and included in the price.
- The federal discount appears as its own line with the number of certificates (about 91 for 13.5 kWh until 31 December 2026).
- The configured output (5 kW or 10 kW) and, on a three-phase home, which phase and circuits are backed up.
- Switchboard work, cable runs and travel are priced.
- The installer appears on Tesla’s Certified Installer list; also check Solar Accreditation Australia’s installer register and the Clean Energy Council approved retailer list yourself.
- The Expansion unit price, since adding one later can miss the federal discount.
See how to compare solar quotes, our guides to Tesla Powerwall installers in Sydney, Melbourne and Brisbane, or browse our installer directory.
FAQ
How much does a Tesla Powerwall 3 cost in Australia?
A Tesla Powerwall 3 costs about A$15,000 to A$17,000 fully installed before the federal battery discount and roughly A$11,200 to A$13,600 after it, as at November 2026. Tesla Australia lists the hardware at A$11,220 including the Gateway and excluding installation.
How much is a Powerwall 3 expansion pack?
A Tesla Powerwall 3 Expansion unit adds A$8,600 to Tesla Australia’s hardware price as at November 2026. Published installed prices after the federal discount were about A$5,815 at Grow Energy when bought with a new Powerwall 3 and A$8,490 at Perth Solar Warehouse.
How much is the Powerwall 3 rebate?
The federal Cheaper Home Batteries Program discount on one 13.5 kWh Tesla Powerwall 3 is roughly A$3,400 to A$3,600 for installations between 1 May and 31 December 2026. That is about 91 certificates at A$37 to A$40 each. From 1 January 2027 the same battery earns about 76 certificates, worth roughly A$2,800 to A$3,050.
Is there still a Tesla rebate on Powerwall 3?
No, not for new orders. Tesla Australia’s rebate page says its A$750 per unit offer, capped at A$1,500, applied to orders placed between 6 November 2025 and 30 June 2026 and has ended; buyers who ordered in that window have until 31 December 2026 to install and claim.
How long does a Tesla Powerwall 3 take to pay for itself?
About 9 to 11 years for a Sydney household using 10 to 12.5 kWh from the battery each night, on our assumptions of a A$12,000 installed price, a 33.1 c/kWh usage rate and a 3 c/kWh feed-in rate, and about 18 years at 6 kWh a night. The warranty runs for 10 years.
Will the Tesla Powerwall 3 price go up in 2027?
The after-discount price of a Tesla Powerwall 3 rises by roughly A$550 to A$600 on 1 January 2027 if hardware and installation prices stay the same, because the federal factor falls from 6.8 to 5.7 certificates per usable kWh. The installation date sets the factor, not the contract date.
Sources
- Tesla Australia: Get Powerwall order page (prices checked 12 November 2026)
- Tesla Australia: Cheaper Home Batteries Program and Powerwall 3
- Tesla Australia: Powerwall rebate terms
- DCCEEW: Cheaper Home Batteries Program
- Demand Manager: STC spot price, 12 November 2026
- Solar Choice: Battery Price Index, November 2026
- Solar Choice: Tesla Powerwall buyers guide
- SolarQuotes: Tesla Powerwall 3 review
- SolarQuotes: Solar battery prices and system costs, updated 12 May 2026
- Grow Energy: Tesla Powerwall 3 and Gateway installed price
- Perth Solar Warehouse: Tesla Powerwall 3 package prices
- SolarCalculator: Tesla Powerwall 3 buying guide
About this guide
This guide was written by the Solar Cobber editorial team from independent desk research, with every price and program detail checked in November 2026. Solar Cobber is a free directory that may earn referral or advertising fees from installers, and commercial relationships never affect our content. Prices change and your quote will differ, so this is general information and not financial advice. If you spot an error, send a correction through our contact page.
Filed under Solar Products
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