How much does a solar battery cost in Australia right now?
In 2025, the solar battery cost for Australian households starts from $4,500, with larger systems exceeding $12,000. This variation depends on battery size, brand, and whether it’s installed alongside solar panels or retrofitted into an existing system.
There are two key rebates that can help reduce the cost significantly:
Federal Battery Rebate: Offers up to $372 per usable kWh, which can equal $3,300–$4,000 off for a typical 10–13 kWh system.
Solar Victoria Rebate: A flat $2,950 available to eligible households in Victoria.
Average solar battery cost in 2025
Prices include installation. Rebates vary depending on your eligibility and location.
How solar battery installation works
Installing a solar battery at home is usually completed in one day by accredited technicians. The steps include:
On-site inspection – Assessment of your switchboard, energy usage and roof layout.
Battery selection – Based on your home size and current solar system.
Mounting & wiring – Typically wall-mounted in the garage or exterior.
System connection – Integrated with your existing or new hybrid inverter.
Monitoring setup – View performance via app or online dashboard.
If your current system doesn’t include a hybrid inverter, an upgrade may be required
What affects the cost of a solar battery?
Understanding pricing starts with the details. These are the main factors that push the number up or down:
Battery size (kWh): More storage = more cost, but also more savings potential.
Brand and warranty: Premium brands like Tesla or Sonnen cost more but often last longer.
Standalone vs bundled: Retrofitting a battery into an existing system may be more complex than installing it as a bundle.
Installation conditions: Electrical setup, access, and switchboard upgrades can add hidden costs.
Integrated hybrid inverter: Found in premium systems like Tesla, reducing installation complexity.
What if I don’t have a hybrid inverter?
If you’re adding a battery to an existing solar setup, you’ll likely need a hybrid inverter to store and manage the energy effectively.
Some batteries, like the Tesla Powerwall, include a built-in hybrid inverter, which can simplify the installation.
Are solar batteries worth it?
❗ If you’re adding a battery to an older system without rebates, payback may extend to 10–12 years.
Who benefits most from getting a battery?
A battery might be the right call if:
You consume a lot of energy after the sun goes down.
You want backup during outages.
You plan to stay in your home for 7+ years.
You’re building a new solar system and want full energy independence.
If you already have solar, adding a battery now could future-proof your setup, especially as feed-in tariffs continue to drop.
Common questions about solar battery cost.
What’s the cheapest battery in Australia?
Brands like Sungrow, Alpha ESS, and Soltaro offer solid 6–8kWh options starting around $4,000–$5,000 before rebates.
Can I add a battery to my current solar system?
Yes. Most systems are compatible. You may need a hybrid inverter.
How long do solar batteries last?
10–15 years on average. All our batteries include 10-year warranties.
Will a battery help me during a blackout?
Only if it’s configured with backup protection. Make sure your inverter and battery support it.
Are there different battery types?
Yes. Most Glower batteries use LiFePO4 (Lithium Iron Phosphate) for stability and efficiency.
Get your personalised quote rebate included
Thinking about adding a battery?
We’re here to help you check your eligibility, explore your options, and get a free, personalised quote for your home
