WA Solar Battery Rebates

LAST UPDATED JULY 2025

The WA Government’s Residential Battery Scheme launched on 1 July 2025 and is now fully operational, offering rebates and no-interest loans to Western Australian households.

The scheme is one of the most generous battery incentives in Australia and is driving huge demand for batteries in WA.

• Launch: 1 July 2025.
• Rebate: up to $1,300 for Synergy customers, and up to $3,800 for Horizon Power customers. The actual rebate will be determined by the size of the battery.
• Interest-free Loans: for the remaining cost, zero interest loans up to $10,000. Means-tested for low and medium-income households.
• Caps: 100,000 battery rebates in total.
• Budget: $387 million, including $50M for WA-based battery manufacturing.

With only 100,000 rebates available, demand is high.

Who is eligible for the WA Solar Battery Rebate?

To be eligible for the WA battery rebate, you must:

• Be a Synergy or Horizon Power customer.

• Install a new or replacement battery system after 1 July 2025 (systems installed before this date are ineligible). 

• Install a battery with minimum 5 kWh usable capacity (rebate up to 10 kWh). You can install a solar system and battery together (a “bundle”) or just the battery (e.g. as an add-on to an existing solar system).

• Ensure battery & inverter are on Synergy/Horizon Power approved lists and meet technical standards.

• Use a Solar Accreditation Australia–accredited installer.

• Connect the battery to a Virtual Power Plant (VPP) with internet access.

• Own or rent (with permission) a residential property in WA; landlords must approve.

• Meet additional criteria set by the WA Government (sign-up below for alerts).

Rebates Available:

An interest-free loan of up to $10,000 will also be available to help with upfront costs, means-tested up to a maximum of $210,00 in house-hold income.

Loans can be used for batteries and new or upgraded equipment such as inverters and solar panels, as long as they are installed with a battery.

The no-interest loan component of the WA Residential Battery Scheme will be managed by Plenti

Homeowners can receive both the WA State Rebate and the new Federal Battery Rebate.

Combining the WA Home Battery Rebate, with the Federal Solar Battery Rebate and the Federal STC Solar incentive, makes a solar and battery system a no brainer for many West Australian homes.

• The Federal Battery Rebate offers $400 per kWh up to 50 kWh, capped at batteries of up to 100 kWh total size.

• The WA State Rebate offers up to 10 kWh of subsidised capacity, depending on your electricity retailer.

How Affordable Does the Scheme Make Batteries for WA Homes? 

Typical, batteries cost between $10,000 and $15,000. Therefore, the combination of the rebate and interest-free loan significantly lowers the financial barrier for homeowners.

Here are our estimates: 

• Upfront Cost: Assuming a $15,000 battery gets the maximum combined Federal and WA State Rebate (Synergy) of $5,000, the out-of-pocket price for the battery would reduce to $10,000. 
• Remaining Costs: low and medium-income households also get an interest-free loan to cover the remaining $10,000, therefore making it $0 upfront cost.
• Payback Period: the WA Government estimates a solar battery will save WA households up to $1,500 per year. Therefore, depending on your electricity usage patterns, you could see a payback period as low as 6 to 7 years. 
• Cash Flow: Monthly loan repayments may be offset by electricity bill savings, improving affordability. 

FAQs

Does the WA Battery Rebate allow for retrofitting batteries to existing solar systems?
Yes, the scheme does allow retrofitting, as long as you meet all the eligibility criteria. Register for updates below.

Can renters apply for the WA Residential Battery Rebate?
Long-term rental properties are eligible for the WA Scheme, subject to agreement by the landlord and tenant on the battery installation.

Next Steps

1. Get 3 quotes from approved WA installers.

2. Confirm battery system, inverter, and installer meet eligibility and VPP standards.

3. Schedule installation from 1 July 2025 onward.

4. Vendor submits application for both WA and Federal rebates & loan via Plenti.

We’ll continue to update this page and our blog as the WA Government releases more information about the WA Residential Battery Scheme.