Home batteries
Home Solar Batteries in Australia: Costs, Rebates and Brands
The federal discount has made home batteries much cheaper, and it falls twice a year from 2027. Here is what batteries cost, the rebates that apply, how to size one and whether it pays back.
- 10 kWh
- $7,784
- battery only, installed
- 20 kWh
- $14,972
- battery only, installed
- Federal factor
- 6.8
- STCs per kWh to Dec 2026
- 10 kWh discount
- $2,720
- up to, 2026
Battery payback calculator
See the yearly saving and years to pay back with your own battery price and rates.
Battery prices
Average installed prices after the federal discount.
| Usable capacity | Battery only | With inverter |
|---|---|---|
| 10 kWh | $7,784 | $8,284 |
| 20 kWh | $14,972 | $15,772 |
| 30 kWh | $22,489 | $23,089 |
| 40 kWh | $29,911 | $31,111 |
| 50 kWh | $38,534 | $40,034 |
Cost and rebates
What a battery costs and the discounts that bring it down.
Choosing a battery
Size, set-up and how long it will last.
- What size batteryToo small and you still buy power every evening; too big and you pay for capacity that never empties.
- AC vs DC coupledHow a battery connects to your solar affects price, efficiency and whether you need a new inverter.
- Battery lifespanA battery is a 10 to 15 year purchase.
- Battery installation rulesBatteries store a lot of energy, so where they go is tightly controlled.
- Virtual power plantsA VPP lets a retailer use part of your battery when the grid needs it, and pays you for the privilege.
Battery brands
Specifications, warranties and prices of common batteries.
- Tesla PowerwallThe Powerwall 3 is the only Powerwall sold new in Australia.
- Powerwall 2The Powerwall 2 was one of Australia's most popular batteries.
- AlphaESS SMILEAlphaESS is a common value brand on Australian homes.
- Sungrow SBRThe Sungrow SBR is a modular home battery that stacks in 3.2 kWh steps and pairs with Sungrow's own hybrid inverters, a common combination on Australian homes.
- BYD Battery-BoxBYD makes batteries for its own electric cars and for homes.
- Enphase IQ BatteryEnphase batteries carry their own microinverters, so they pair naturally with Enphase solar and can be added to almost any home.