- Battery pricing
42kWh Battery Price In Australia (2026)
- Quick answer
A 42 kWh home battery 42 kWh home battery costs approximately $19,000 – $27,000 installedin Australia after the 2026 federal rebate. The Fox ESS CQ7-L6 (41.76 kWh) is the most common system at this size.
42kWh battery price by brand
| Battery | Usable kWh | Installed price (after rebate) | $/kWh |
|---|---|---|---|
| Fox ESS CQ7-L6 | 41.76 kWh | $19,000 – $27,000 | $455 – $647 |
| Fox ESS CQ6 (2x stack) | 40 kWh | $21,000 – $28,000 | $525 – $700 |
| Sungrow SBR (7 x 6.4kWh) | 44.8 kWh | $26,000 – $32,000 | $580 – $715 |
| 3 x Tesla Powerwall 3 | 40.5 kWh | $38,000 – $44,000 | $938 – $1,086 |
Why 42 kWh is the sweet spot for large homes
- 42 kWh gives you roughly 2 days of average Australian household consumption (~20 kWh/day), enough to ride through most blackouts and run essentials from a fully-charged battery. Paired with 15–20 kW of solar it will typically bring grid consumption to zero on 300+ days per year.
Full 42kWh install — what's included
- 42 kWh pricing
42kWh battery price FAQs How
How much does a 42kWh battery cost in Australia?
A 42 kWh home battery costs approximately $19,000–$27,000 installed in Australia after the 2026 federal battery rebate. Equipment-only pricing is roughly $14,000–$19,000. Exact price depends on brand (Fox ESS CQ7-L6 is the most common at this size), inverter and switchboard scope.
Is a 42kWh battery the same as Fox ESS CQ7-L6?
In practice, yes. The Fox ESS CQ7-L6 uses six 6.96 kWh LFP modules for a total usable capacity of 41.76 kWh, which is what installers and rebate paperwork refer to as a ’42 kWh’ battery.
What size home is a 42kWh battery for?
42 kWh suits large 4–5 bedroom homes with ducted air-con, pool, EV charging, or homes with 15–20 kW of rooftop solar wanting full self-consumption. It typically covers 2 days of average household demand.
Does the 42kWh rebate stack with NSW PDRS?
Yes. The federal Cheaper Home Batteries Program stacks with the NSW Peak Demand Reduction Scheme (PDRS) VPP incentive, which can add another $1,500–$2,400 for eligible NSW installs.