WA Solar Battery Rebate: How Much You Can Get & How To Prepare
Last Updated: 4th Jul 2025 Fact-checked by Ronald Brakels
The Western Australian (WA) Government’s Residential Battery Scheme can be combined with the federal battery rebate, making batteries an excellent investment for almost everyone with solar. It’s available for batteries from 5-100 kWh, provided they join a Virtual Power Plant (VPP).
There are two elements to the scheme: the battery rebate and a no-interest loan option.
How Much Is The WA Battery Rebate?
- For Synergy customers: $130 per kilowatt-hour of usable battery capacity up to 10 kWh – max rebate $1,300.
- For Horizon Power customers: $380 per kilowatt-hour of usable battery capacity up to 10 kWh – max rebate $3,800. Read more about installing solar and batteries in regional WA here.
The federal rebate will come to around $330 per kWh, so with both rebates applied, a 10kwh battery would have its cost reduced by around $4,600 for most properties and by $7,100 for those in the regional Horizon Power area.
Example: Without any rebates, SigenStor Single-Phase 8 kWh battery with a straight forward installation might cost $10,000. But because it has 7.8kWh of usable storage, in the Synergy area it’s eligible for…
- Federal battery rebate: $2,574 ($330 x 7.8kWh = $2,574)
- WA battery rebate: $1,014 ($130 x 7.8kWh = $1,014)
When these two rebates are combined it comes to $3,088 off the $10,000 installed cost of the battery, dropping it down to $6,912.
For a home with a 6.6kW solar system and typical overnight electricity consumption, this battery would save approximately $800 per year, giving a simple payback period of around 8.6 years. If it receives $100 a year in VPP payments, its simple payback period will drop to around 7.6 years. As this is well within the battery’s warranty, this should make it an effective investment. It’s also reasonable to expect a home battery to last for at least several years past the end of its warranty.
Interest-Free Loan For Batteries (And Solar)
Households with combined annual incomes of under $210,000 will be eligible for a zero-interest loan from $2,001 to $10,000. This can be used to pay for batteries and can also contribute to solar systems that are installed at the same time as a battery. The loan is repaid over 10 years.
The simple payback period estimate given above does not account for capital costs, but if the zero-interest loan is used and the loan repaid with savings from the battery, then capital costs can be avoided.
Plenti will be the third-party administrator of the loan.
A VPP Requirement
To use the WA rebate, the battery must be connected to a VPP. The most commonly used ones are likely to be:
- Synergy customers: Synergy Battery Rewards
- Horizon customers: Community Wave VPP
These VPPs provide payments in return for allowing the battery to be discharged to support the grid a set number of times per year. It’s not yet known how large payments on average will be, but they may be around $200 a year for a 15 kWh battery. These payments will further improve the return from a home battery.
It’s not a requirement to join one of these two VPPs. You can join a different VPP provided one is available in your area.
How Many Rebates Will There Be?
There will be 100,000 rebates in total. With more than 531,000 solar power systems already installed in WA — and more added every day — we expect strong interest in each round of rebates.
Who Is Eligible?
The rebate is available to all residential properties in WA, including those used for home business. You can read the full eligibility criteria here.
Which Batteries Are Eligible?
The WA Government hasn’t published a fixed list of eligible batteries yet. However, we now know that to qualify for the rebate under the WA Residential Battery Scheme:
- Batteries must have at least 5 kWh usable capacity and must be Virtual Power Plant (VPP) ready. Recipients are required to join a VPP to access the rebate.
- You can also get the rebate if you install a new, eligible battery—even if you already own one.
Can Any Installer Get Me the Rebate?
No. You must purchase and install your battery system through an accredited vendor. Here is a list of formally approved vendors.
How To Get Started
We’re keeping close tabs on what’s happening with the Scheme and keeping in touch with trusted pre-vetted Western Australian installers in our network who plan to participate. You can request a solar quote at any time and we’ll match you with up to three local installers who will each tailor a no-obligation quote for solar that’s ready for a fuss-free battery installation.
Another benefit of arranging a solar/battery installation in Western Australia via SolarQuotes is the extra peace of mind provided through our unique Good Installer Guarantee.
Further Information
Not sure if solar or a battery system suits you — or what to look for? Our hugely popular Solar 101 and battery guides will point you in the right direction. If you do not live in WA, check out which states also offer battery rebates.