Installed prices, not hardware prices. That distinction is where most battery quotes go wrong.
Almost every battery price you see advertised is the hardware. The number that matters is fully installed, because the install is a third of the job.
This tracker lists what the main batteries actually cost installed in Australia in 2026, side by side, so you can compare on cost per usable kWh instead of on brand.
At a glance
Quick answer: a home battery in Australia in 2026 costs roughly $8,600 to $17,000 fully installed depending on brand and capacity, which works out to about $800 to $1,100 per usable kWh. The federal Cheaper Home Batteries rebate is applied by your installer at the point of sale and scales with usable capacity, so you see it as a lower invoice rather than a payment.
Installed battery prices compared
| Battery | Usable kWh | Installed price (before rebate) | Inverter |
|---|---|---|---|
Fox ESS EP11 | 10.4 kWh | About $8,650 to $9,200 | Separate |
Sungrow SBR | 9.6 kWh | About $10,694 average | Separate |
Sigenergy SigenStor | 5.2 or 7.8 kWh per module | About $11,500 to $16,500 | Integrated |
Tesla Powerwall 3 | 13.5 kWh | About $14,000 to $16,000 | Integrated |
Fox ESS EQ4800 | 18.64 kWh | About $15,000 to $16,000 | Separate |
Sungrow SBH (25 kWh pkg) | 25 kWh | About $18,999 | Separate |
Read that table on cost per usable kWh, not headline price. A bigger battery almost always looks more expensive and is often cheaper per kWh.
Prices move. These are the ranges Australian installers and independent guides published as of September 2026, and they vary with your site, your phase type and how much switchboard work is needed. Always compare written quotes for your own roof.
What the federal rebate actually takes off
The federal Cheaper Home Batteries discount is applied by the installer before you pay, so it should appear as a line item on the quote. It scales with usable capacity, which means a larger battery claims a larger discount.
Where installers publish after-rebate figures, a Powerwall 3 lands around $11,400 to $13,600 and a typical Sigenergy configuration around $8,900 to $12,800. Not every brand publishes a consistent model-by-model after-rebate price, so ask for it in writing rather than assuming.
How to read a battery quote
Three checks catch most of the confusion. First, is the price hardware or fully installed? Second, does it include the inverter, because a Sungrow or Fox ESS battery needs one and a Powerwall 3 or SigenStor does not. Third, is the rebate shown as a line item?
Then divide the installed price by usable kWh. That single number makes brands comparable in a way headline prices never do.
See what a battery costs on your roof, with your rebate and payback figures.
Frequently asked questions
Roughly $8,600 to $17,000 fully installed depending on brand and capacity, which works out to about $800 to $1,100 per usable kWh. The cheapest credible entry point is around $8,650 installed for a Fox ESS EP11 at 10.4 kWh; a Tesla Powerwall 3 at 13.5 kWh runs about $14,000 to $16,000.
Of the widely installed brands, Fox ESS is usually the cheapest credible option, with the EP11 at 10.4 kWh running about $8,650 to $9,200 fully installed. Some installers advertise Fox ESS packages from around $5,999, but that figure is not tied to a stated storage size, so confirm the usable kWh before comparing.
The Cheaper Home Batteries discount scales with usable capacity and is applied by the installer at the point of sale, so it shows up as a lower invoice. Where after-rebate pricing is published, a Powerwall 3 lands around $11,400 to $13,600 and a typical Sigenergy configuration around $8,900 to $12,800.
About $800 to $1,100 per usable kWh fully installed is the normal Australian range in 2026. Below that is a good deal worth checking the inclusions on; well above it means you are paying a brand premium, which can still be worth it for the installer network and app.
It depends on the battery. The Tesla Powerwall 3 and Sigenergy SigenStor have integrated inverters, so a standard install does not need a separate one. Sungrow and Fox ESS batteries are battery stacks that pair with a separate compatible inverter, which must be priced into the quote for a fair comparison.
