What a Tesla Powerwall 3 costs in October 2026
What a Tesla Powerwall 3 costs has two public anchors: the hardware price on an Australian shop page, and the installed figures two dated guides publish. Neither is a quote. The hardware price is before installation, before any hybrid inverter the battery needs and before the federal Cheaper Home Batteries discount; the discount is set by usable capacity at $39 per certificate, so it is the same whoever installs it.
| Unit | Usable | Listed | Inc GST | Federal discount | Net at list |
|---|---|---|---|---|---|
| Powerwall 3 with Backup Gateway | 13.5 kWh | $13,600 inc GST | $13,600 | 91 STCs, $3,549 | $10,051 |
| Powerwall 3 | 13.5 kWh | $13,595 inc GST | $13,595 | 91 STCs, $3,549 | $10,046 |
| Battery | Usable | After rebate | $ per kWh |
|---|---|---|---|
| Tesla Powerwall 3 (including Gateway) | 13.5 kWh | $10,000 | $741 |
| Battery | Usable | Installed, before rebate | After the federal discount |
|---|---|---|---|
| Tesla Powerwall 3 | 13.5 kWh | $15,000 to $17,000 | $11,451 to $13,451 |
The gap between the $13,600 list price and the $15,000 to $17,000 installed figure, $1,400 to $3,400, is the installation, the switchboard and network work, the margin and the warranty service.
Every battery on the site is on one page for comparison: solar battery prices 2026.
Federal discount on each Tesla size: 13.5 to 40.5 kWh
The federal discount for every Tesla size, at $39 per certificate and the 6.8 factor that applies to installs to 31 December 2026. The installer claims the certificates and shows the discount as a line on the quote. From 1 January 2027 the factor drops to 5.7, which is the last column.
| Model | Usable | Certificates | Discount, 2026 | Per usable kWh | Discount, 2027 |
|---|---|---|---|---|---|
| Powerwall 3 | 13.5 kWh | 91 | $3,549 | $263 | $2,964 |
| Powerwall 3 plus one Expansion | 27 kWh | 148 | $5,772 | $214 | $4,836 |
| Powerwall 3 plus two Expansions | 40.5 kWh | 165 | $6,435 | $159 | $5,382 |
Above 14 kWh each extra kilowatt-hour earns 60 per cent of the factor and above 28 kWh 15 per cent, so the per-kWh value falls on the larger stacks. One battery per premises is eligible, it must be on the CEC approved list, and the inverter it connects to must be VPP-capable. The battery rebate calculator works any size.
Tesla Powerwall 3 warranty terms
10 years, with at least 70 per cent of usable capacity at the end of it. Cycles or throughput: unlimited for solar self-consumption, time-based control and backup; 37.8 MWh aggregate throughput for any other application. Full ten-year term depends on the unit staying online for firmware updates and being registered; Tesla states it will honour at least four years otherwise. Read from Tesla Powerwall Warranty, Australia and New Zealand, revision 1.16, effective 6 May 2026; the document is linked in the sources below. The number that matters on a quote is the retention percentage and the throughput cap together: a battery cycled once a day for ten years delivers about 49 MWh from 13.5 kWh, which is the scale the throughput caps are set at.
What a Tesla Powerwall 3 pairs with
Lithium iron phosphate (LFP). AC-coupled with a built-in 10 kW solar inverter (DC solar can connect direct); needs the Backup Gateway for backup.
The Powerwall 3 has its own 10 kW inverter with up to 20 kW of DC solar input, so a new system needs no separate solar inverter; an existing solar system can stay on its inverter and AC-couple. Backup needs the Backup Gateway on the switchboard.
Hybrid inverter list prices ($3,794 to $5,609 for a Fronius GEN24 Plus, $1,199 to $2,688 for a 5 kW string unit) are on the inverter prices page; the solar with battery page prices the whole package.
Tesla Powerwall 3 price by capital city: Sydney, Melbourne, Brisbane, Perth, Adelaide, Canberra, Hobart and Darwin
Tesla prices the hardware nationally, and the federal discount is the same in every state, so what changes by city is the solar system the battery sits with and the state support. The table puts the standard 6.6 kW offer in each capital (October 2026, after STCs) beside the Tesla Powerwall 3 net at list and adds them: a hardware-level total before the battery's installation and before any hybrid inverter. Perth is the cheapest capital for the solar side ($5,294) and the one state with an open battery rebate; Darwin is the dearest ($10,250).
| City | 6.6 kW standard offer | Tesla net at list | Solar plus battery hardware | State battery support |
|---|---|---|---|---|
| Sydney | $6,170 | $10,051 | $16,221 | Home Energy Saver zero-interest loan |
| Melbourne | $6,218 | $10,051 | $16,269 | none open |
| Brisbane | $6,756 | $10,051 | $16,807 | none open |
| Perth | $5,294 | $10,051 | $15,345 | WA Residential Battery Scheme rebate; WA Residential Battery Scheme no-interest loan |
| Adelaide | $5,812 | $10,051 | $15,863 | none open |
| Canberra | $6,144 | $10,051 | $16,195 | Sustainable Household Scheme (SHS) loan |
| Hobart | $7,544 | $10,051 | $17,595 | none open |
| Darwin | $10,250 | $10,051 | $20,301 | none open |
Other battery brands
Sungrow SBR, BYD Battery-Box, GoodWe Lynx, Enphase IQ Battery, SolarEdge Home Battery, AlphaESS SMILE, and all of them on one page at battery prices 2026. Head to head: Tesla Powerwall 3 vs Sungrow SBR, Tesla Powerwall 3 vs Enphase IQ Battery.
Related cost guides
Every price on Solar Scorecard comes from the Solar Scorecard Price Index, read monthly from installer offers after the STC discount. These guides apply it to tesla Powerwall 3 price Australia 2026: $13,600 list, $10,051 after the federal discount.
- Is a solar battery worth it: 10 kWh and 13.5 kWh after the federal discount, payback by state.
- Solar prices from 1 January 2027: the STC deeming step by zone and the battery factor cut.
- Solar plus battery pricing: bundles by capital and the tiered federal battery discount.
- Solar loans and "from $X a week": weekly repayments on a real quote at published lender rates.
- Solar panel cost in Australia: the Solar Scorecard Price Index: installed prices after STCs by city and size, checked monthly.
Tesla Powerwall 3 questions
How much does a Tesla Powerwall 3 cost in Australia?
$13,600 inc GST at list for the 13.5 kWh Powerwall 3 with Backup Gateway, $10,051 after the $3,549 federal discount. Installation, and a hybrid inverter where the battery needs one, are on top; the installed references above show where quotes have landed.
How much is the federal rebate on a Tesla Powerwall 3?
$3,549 on the 13.5 kWh Powerwall 3 (91 certificates at $39); $5,772 on 27 kWh. The factor drops from 6.8 to 5.7 on 1 January 2027, cutting the 13.5 kWh discount to $2,964.
What is the Tesla Powerwall 3 warranty?
10 years to 70 per cent of usable capacity; unlimited for solar self-consumption, time-based control and backup; 37.8 MWh aggregate throughput for any other application. Source: Tesla Powerwall Warranty, Australia and New Zealand, revision 1.16, effective 6 May 2026.
Does a Tesla Powerwall 3 need a hybrid inverter?
No: The Powerwall 3 has its own 10 kW inverter with up to 20 kW of DC solar input, so a new system needs no separate solar inverter; an existing solar system can stay on its inverter and AC-couple.
Is a Tesla Powerwall 3 cheaper in Perth or Adelaide than in Sydney?
The hardware price is national and the federal discount is the same everywhere; the solar system beside it is not. A standard 6.6 kW system is $5,294 in Perth, $5,812 in Adelaide and $6,170 in Sydney after STCs in October 2026, and Western Australia has an open battery rebate of up to $1,300 for Synergy customers.
How much is a Tesla Powerwall 3 in Adelaide?
$10,051 net of the federal discount at list for the 13.5 kWh unit, the same in Adelaide as in every capital, because the hardware is priced nationally and the discount is federal. With a standard 6.6 kW system at $5,812 in Adelaide (October 2026, after STCs) the pair comes to $15,863; the row for Adelaide in the table by capital above has the state support beside it.