WA Solar Battery Rebate: How Much You Can Get & How To Prepare
Last Updated: 2nd Nov 2026 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 with a minimum of 5 kWh of usable storage, with no upper limit, 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.
For the first 14 kWh, the maximum amount of federal rebate is $272 per kWh, so with both rebates applied, a 10 kwh battery would have its cost reduced by around $4,000 for most properties and by $6,500 for those in the regional Horizon Power area.
But while the WA rebate maxes out at 10 kWh, most households will want a substantially larger battery.
Example:
In the Synergy area, without any rebates, the installed cost of a decent-quality battery with 24 kWh of usable storage may be $18,000. But after the following rebates:
- Federal battery rebate: $5,440 (Maximum total for 24 kWh of usable storage.)
- WA battery rebate: $1,300 (Maximum WA rebate for 10+ kWh in the Synergy area.)
Its installed price falls to $11,260.
For a home with a 6.6 kW solar system and typical overnight electricity consumption for a three-person household, this battery could save over $1,500 a year or over $1,650 if the battery is sometimes topped up from the grid during the cheap daytime period on the time-of-use Midday Saver plan. This gives a simple payback period of around 7 years, as well as providing the benefit of backup power.
As joining a VPP is compulsory to get the WA rebate, the households should also receive some modest VPP payments.
In the Horizon area, the WA rebate would be $3,800. If all else were equal, this would drop the installed price to $8,760. Unfortunately, because many Horizon Power customers are in regional and remote areas, they usually have to pay more to have a battery installed than those in the Synergy area.
Interest-Free Loan For Batteries (And Solar)
Households with a combined gross annual income under $210,000 can qualify for a zero-interest loan from $2,001 to $10,000 — subject to credit approval and other eligibility requirements. 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 3-10 years, with no interest or early replament fees.
Plenti is the scheme administrator and finance provider.
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. The Synergy Battery Rewards VPP pays 70c per kWh exported during activation events, with a maximum of 30 events per year. It’s currently not clear how often activation events will occur or how how many kWh will generally be exported when they do occur. As the energy will have to be replaced, the average net benefit will come to less than 70c per kWh. While it’s not currently possible to know what the average annual VPP payment will be, I would count on the average battery receiving more than $100 per year.
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. On 29 October 2026, the WA government stated over 35,000 homes had used the state battery rebate. This suggests it will be available through 2027 and, depending on demand, could potentially run until its fixed end date of 30 June 2029.
Who Is Eligible?
The rebate is available to Australian residents over 19 who are customers or Synergy or Horizon Power. Renters can apply, but require the permission of the property owner to install a batttery. Home businesses can receive the rebate provided the property’s primary use is residential. There is no household income limit to receive the battery rebate, but the optional zero interest loan has an income limit of $210,000. You can read the full eligibility criteria here.
Which Batteries Are Eligible?
In the Synergy area, which includes Perth and the southwest of WA, the battery must either be on Synergy’s supported solutions list or use a hybrid inverter that’s on the list. For the rest of the state, they need to be on Horizon Power’s supported solutions list. Also note that:
- 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. (Batteries on the supported solutions list meet this requirement.)
- 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.