Prices and savings
What does a solar battery cost in 2026?
The short answer
As of October 2026, most Australian homes pay about $700 to $850 per kWh of battery storage, installed, after the federal battery rebate: roughly $9,000 to $14,500 for a 15 kWh battery. With 6.6 kW of new solar, the total is about $13,500 to $23,000 after the federal rebates. These ranges come from current installer prices on Homerise and published Australian market data. The battery rebate alone is worth about $3,663 on 15 kWh if installed now, and it drops on 1 January 2027.
How much does a home battery cost?
A home battery costs most homes about $700 to $850 per kWh of storage, installed, GST included, after the federal battery rebate (October 2026, current installer prices on Homerise and published Australian market data). By size:
| Usable size | Typical price | Suits |
|---|---|---|
| 10 kWh | about $6,000 to $11,000 | a smaller home, or modest evening use |
| 15 kWh | about $9,000 to $14,500 | most family homes' evenings |
| 20 kWh | about $12,000 to $18,000 | bigger evening use, longer backup |
| 30 kWh | about $15,500 to $27,500 | an electric car, an all-electric home, a VPP |
The price per kWh stays fairly flat as batteries get bigger: the inverter and installation are shared over more storage, but the rebate pays less for each kWh past 14. Large modular batteries can come in near $550 a kWh; small or premium ones can reach about $1,100.
Adding a battery to existing solar can cost more: if your inverter can't take a battery, you'll need a hybrid inverter or a separate battery inverter. See adding a battery to existing solar.
How much do solar and a battery cost together?
Buying both at once usually saves on the inverter (one hybrid inverter runs both) and the installation. After the federal solar and battery rebates:
| Package | Typical price |
|---|---|
| 6.6 kW solar + 15 kWh battery | about $13,500 to $23,000 |
| 10 kW solar + 20 kWh battery | about $20,000 to $30,000 |
| 13 kW solar + 30 kWh battery | about $25,500 to $43,000 |
Ranges, not quotes. Installers' current offers can come in below them. Darwin and Hobart usually cost more than the other capitals. Your price depends on your home: we show it before you share your details, and your installer confirms it after a site check.
“After the federal rebates” means the battery rebate (Cheaper Home Batteries) and the solar rebate (small-scale technology certificates) taken off the price, as installers do on the quote. State programs come on top where you qualify; see rebates in your state.
How much is the battery rebate?
The federal rebate pays per usable kWh on three tiers: the full rate up to 14 kWh, 60% from 14 to 28 kWh, and 15% from 28 to 50 kWh. Today that's 6.8 certificates per kWh on the first tier, falling to 5.7 for batteries installed from 1 January 2027.
| Usable size | Installed now | Installed from 1 January 2027 |
|---|---|---|
| 10 kWh | $2,516 68 STCs | $2,109 −$407 |
| 15 kWh | $3,663 99 STCs | $3,071 −$592 |
| 20 kWh | $4,403 119 STCs | $3,700 −$703 |
| 30 kWh | $5,698 154 STCs | $4,773 −$925 |
| 40 kWh | $6,068 164 STCs | $5,069 −$999 |
Estimates at an STC value of $37 (what reaches you after fees). The installation date sets the rate, not the date you sign. More: how the battery rebate works and the battery rebate calculator.
What changes the price of a battery?
Six things change the price of a battery, the size and brand most:
- Battery size and brand. The biggest factor. See how to choose a home battery.
- The inverter. New solar with a battery usually takes one hybrid inverter. Adding a battery to existing solar may need a new hybrid inverter or a separate battery inverter.
- Backup. Most batteries can keep some circuits running in a blackout; whole-home backup can need switchboard work. Your installer confirms what your switchboard allows.
- Your home. A two- or three-storey roof, a tiled roof, three-phase power or a switchboard upgrade each add from a few hundred dollars to about $1,200.
- Where you live. State programs such as a VPP incentive in NSW, WA's battery scheme, or interest-free loans like the NSW Home Energy Saver loan can lower the cost further if you qualify.
- When it's installed. The rebate steps down every six months until 2030.
Is bigger better?
A battery you never fill doesn't earn its keep. Size it to your evening use, plus an electric car or a virtual power plant if you'll have one. See what size battery do I need.
Does it pay for itself?
It depends on what you pay for power, how much you use in the evening, and whether you join a virtual power plant or take a plan with free midday hours. A battery earns by storing solar you'd otherwise export for a few cents and using it at night instead of buying power. See is a battery worth it in 2026, virtual power plants and the Solar Sharer Offer.
Questions people ask
How much does a solar battery cost in Australia in 2026?
Most homes pay about $700 to $850 per kWh installed after the federal rebate: about $9,000 to $14,500 for 15 kWh. With 6.6 kW of new solar, about $13,500 to $23,000 in total (October 2026, current installer prices on Homerise and published market data).
How much is the solar battery rebate?
About $3,663 on a 15 kWh battery and $5,698 on 30 kWh if installed now, at an STC value of $37. It's lower for batteries installed from 1 January 2027.
Do I need solar to get the battery rebate?
Yes. The battery has to be installed with solar: your existing panels, or new or replacement solar. A battery charging only from the grid isn't eligible.
How much more is a 30 kWh battery than 15 kWh?
Close to double in total, because the price per kWh stays fairly flat: about $9,000 to $14,500 for 15 kWh and about $15,500 to $27,500 for 30 kWh. Large modular batteries and installers' offers can bring 30 kWh down.
When does the battery rebate drop?
For batteries installed from 1 January 2027, from 6.8 to 5.7 certificates per kWh on the full-rate tier, then every six months until 2030. The installation date counts.
Sources
- DCCEEW: Cheaper Home Batteries Program
- DCCEEW: Cheaper Home Batteries eligibility
- Clean Energy Regulator: Solar batteries
- Clean Energy Regulator: Calculate STC entitlements
General information, not financial advice. Rebate rules change: figures on this page come from our rules table, last verified 26 September 2026. How we're paid: installers pay Homerise for introducing you. No brand or installer pays to be mentioned in a guide.