SA REPS VPP incentive – current status (August 2026): general-household funding was fully allocated in May 2026. For the remainder of 2026 the REPS VPP incentive is open to priority group households only – up to $1,030 on a 13kWh battery and up to $2,050 on a 28kWh system. Further funding is expected early 2027. The federal rebate below is unaffected and open to all households. Check if you qualify as a priority household.
First – 10kW or 10kWh? They’re different things
Most people searching “10kW solar battery price” mean one of two things, and quotes only make sense once you know which: kWh is storage (how much energy a battery holds – a 10kWh battery is the most common size in Australia), while kW is power (how fast panels generate or a battery discharges – a 10kW solar system is a large rooftop array). This page prices both.
10kWh battery price (2026)
| Typical range | |
|---|---|
| 10kWh battery installed, before rebates | $12,000 – $15,000 |
| Federal Cheaper Home Batteries rebate | about -$2,520 |
| SA REPS VPP incentive (typical at this size) | -$600 to -$1,000 |
| Typical net price in SA | $8,000 – $12,000 |
June 2026. Value brands (Sungrow, Alpha ESS) sit at the lower end; premium brands and backup hardware push the top end. The federal rebate steps down January 2027.
10kW solar system + battery price (2026)
A 10kW panel array suits bigger homes, EV charging and heavy daytime loads. Paired with a battery, the all-in package typically lands at:
| Package | Indicative installed price (after rebates, SA) |
|---|---|
| 10kW solar + 10kWh battery | $18,000 – $23,000 |
| 10kW solar + 13.5kWh battery | $20,000 – $26,000 |
Includes the solar STC discount and battery rebates. Roof complexity, three-phase and brand choices move the number.
households only
SA REPS VPP incentive - current status (August 2026): general-household funding was fully allocated in May 2026. For the remainder of 2026 the REPS VPP incentive is open to priority group households only - up to $1,030 on a 13kWh battery and up to $2,050 on a 28kWh system. Further funding is expected early 2027. The federal rebate below is unaffected and open to all households. Check if you qualify as a priority household.
Figures current as of August 2026. The SA Home Battery Scheme (the old state subsidy) closed in 2022 and has not been replaced. Federal source · REPS status source.
Why 10kWh is Australia’s most-quoted battery size
- It matches real evening usage. A typical family home draws 8 to 14kWh between sunset and sunrise – a 10kWh battery covers most of it.
- It sits inside the rebate’s full-rate band. Every kWh up to 14 earns the full federal rate, so 10kWh is fully subsidised at ~$252/kWh.
- It’s where competition is fiercest. Every brand has a 10kWh-class product, which keeps installed prices honest – and makes quotes easy to compare. Run yours through our quote checker.
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10kW solar battery price FAQs
How much does a 10kWh battery cost installed in 2026?
Roughly $12,000 to $15,000 before rebates in Australia. In SA, the federal rebate and REPS VPP incentive typically bring it to $8,000 to $12,000 installed.
How much is a 10kW solar system with a battery?
Around $18,000 to $26,000 installed after rebates in SA, depending on battery size (10 to 13.5kWh) and brand choices.
Will a 10kWh battery run my whole house overnight?
For most homes, yes – typical overnight usage is 8 to 14kWh. Heavy ducted air-conditioning all night or EV charging can exceed it; size up or charge the car in daylight.
Is it cheaper per kWh to buy a bigger battery?
Hardware gets slightly cheaper per kWh as size grows, but the federal rebate drops to 60% of its rate past 14kWh – so the after-rebate sweet spot stays in the 10 to 14kWh band for most homes.
Related: What a battery costs in SA · 20kWh battery prices · What size do I need? · Payback calculator