WA Solar Battery Rebates

Last updated November 2026

The WA Government’s Residential Battery Scheme launched on 1 July 2025 offers 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: $337 million, plus a separate $50M investment in WA-based battery manufacturing.
Closing Date: the scheme is currently expected to run until 2027, pending distribution of all planned rebates.

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 on or 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 an installer on Plenti’s approved vendor directory (and SAA-accredited for the federal rebate).
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:

Electricity Retailer	Rebate Amount	Battery Size Cap
Synergy	$130 per kWh (max $1,300)	10 kWh max
Horizon Power	$380 per kWh (max $3,800)	10 kWh max

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 $210,000 in household 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.

Can I combine the WA and federal rebates?

Yes. The WA rebate and the federal Cheaper Home Batteries discount can be used together on the same battery, so you get both discounts off your quote. If you’re installing solar at the same time, the federal STC incentive also applies to the panels.

Federal Cheaper Home Batteries Program

The Australian Government’s Cheaper Home Batteries Program is available to homes and small businesses in every state and territory. Your installer takes the discount off your quote, so you don’t need to apply.

How much: the discount is based on the battery’s usable capacity. As a guide, a 10 kWh battery gets approx. $2,650 if installed by 31 Dec 2026, or approx. $2,220 from 1 Jan 2027 (at $39 per STC).
Battery size: 5 to 100 kWh nominal capacity, installed with new or existing solar. The full rate applies to the first 14 kWh, 60% to the next 14 kWh, and 15% up to 50 kWh.
Requirements: the battery and inverter must be on the Clean Energy Council’s approved list, installed by an installer accredited by Solar Accreditation Australia (SAA). The battery must be able to join a virtual power plant (VPP), but joining is optional.
Step-downs: the discount reduces every six months, on 1 January and 1 July, until the program ends in 2030.

Find out more about the federal battery rebate.

How much could I save on a battery in WA?

Here’s a guide for a typical 10 kWh battery, using the federal discount at $39 per STC:

	Synergy customer	Horizon Power customer
WA rebate	$1,300	$3,800
Federal discount (installed by 31 Dec 2026)	approx. $2,650	approx. $2,650
Total off your battery	approx. $3,950	approx. $6,450

From 1 January 2027, the federal discount drops to about $2,220 for a 10 kWh battery, so the totals become about $3,520 (Synergy) and $6,020 (Horizon Power).

If you’re eligible, a no-interest loan of up to $10,000 can cover some or all of what’s left to pay.

Your savings each year will depend on your energy use, your solar system and your VPP plan. Getting quotes is the best way to see what a battery would cost for your home.

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

Get 3 quotes from approved WA installers.
Confirm battery system, inverter, and installer meet eligibility and VPP standards.
Have your battery installed by an approved installer
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.