Battery Rebate Australia

Western Australia Battery Rebate

The federal discount of roughly $3,640 applies to a 13.5 kWh battery, as long as it's installed in Western Australia by 31 December 2026. With a virtual power plant membership, you get up to $1,300 (Synergy) or $3,800 (Horizon Power) from Western Australia, so the two together can lower the price by $4,940 to $7,440.

Work out your battery rebate

State, from your postcode: Western Australia

Usable battery size
kWh
Solar panels
When it will be installed
Your power company

Example: enter yours 13.5 kWh in Western Australia, installed by 31 December 2026

$4,940 off your battery

Your installer takes this off the quote; you do not claim it. A few installers pass on a little less, as certificates can sell for just under $40.

First 14 kWh: full rate14 to 28 kWh: 60%28 to 50 kWh: 15%Above 50 kWh: no extra
Federal discount
$3,640 (91 certificates)
State
WA Residential Battery Scheme (Synergy): $1,300. You must join a Synergy virtual power plant (VPP).
Typical price
$13,440 to $17,440 before rebates, $8,500 to $12,500 after

What you payStateFederal

VPP: joining one is a condition of the WA rebate.

How this is worked out

The federal discount is paid in small-scale technology certificates (STCs). Multiply usable kWh by the STC factor for your install date: the first 14 kWh count in full, the next 14 (up to 28 kWh) count 60%, and the slice up to 50 kWh counts 15%; the total rounds down to whole certificates. Each certificate is worth up to $40 (the clearing house price); on the open market it sold for about $37 to $40 in 2026.

Factors: May to December 2026 6.8; January to June 2027 5.7; July to December 2027 5.2. Source: the Clean Energy Regulator's STC factor table.

Typical prices are the installed ranges published by CHOICE for 10 to 50 kWh (prices from SolarQuotes installers), with sizes in between drawn on a straight line. The state amounts come from each state's scheme page.

Get quotes for this battery

Accredited installers near you quote with the rebate already taken off, so you can compare the real price. It is free and there is nothing to sign.

What battery schemes can you use in Western Australia?

SchemeStatusWhat it pays
Cheaper Home Batteries Program (federal)Open to 31 December 2030The first 14 kWh earn $272 each; above that the rate falls to 60%, then 15%
WA Residential Battery Scheme (Synergy)Open$130 for each usable kWh, up to 10 kWh; anything bigger gets the full $1,300
WA Residential Battery Scheme (Horizon Power)Open$380 for each usable kWh, up to 10 kWh; anything bigger gets the full $3,800

Source: WA Residential Battery Scheme.

What extra does Western Australia offer beyond the federal rebate?

Under the WA Residential Battery Scheme, Synergy customers can get up to $1,300 and Horizon Power customers up to $3,800, on top of the federal discount. Batteries with 10 kWh usable or more get the full amount; smaller ones get less. Because installation and power cost more where Horizon Power operates, its customers get a bigger amount.

To receive it, you must join a virtual power plant (VPP) operated by your retailer; a VPP is a pool of home batteries the power company can pull from at busy times. A VPP from your battery's supplier is another option for Synergy customers, as long as it follows the scheme's rules.

Who can claim the WA battery rebate?

  • A new battery that works with a VPP and appears on your area's Synergy or Horizon Power list is required.
  • Your installer holds accreditation and appears on the list kept by Plenti, the company that runs the scheme.
  • Solar panels already on your roof aren't needed to apply, but the federal discount still requires the battery to go in with solar.

There's also a no-interest loan, up to $10,000, for households earning under $210,000 combined. You repay it over up to 10 years. The application is handled by your installer.

How is the WA rebate claimed?

Approved battery retailers give you quotes. The scheme pays the rebate straight to the retailer, not to you. The quote has the state rebate and the federal discount taken off by the retailer. Its 100,000 rebates are the limit; the scheme was expected to run out some time in 2027.

The value of the federal discount

The federal discount doesn't change from state to state. Install by 31 December 2026 and it's about $2,720 on 10 kWh, or about $3,640 on 13.5 kWh. Per kWh, a bigger battery earns slightly less, because the first 14 kWh pay more than each one past 14. Because the amount drops on 1 January 2027, the install date matters more than the quote date. The Clean Energy Regulator sets the rates, and the calculator works out the exact number for your battery.

Questions people commonly ask about Western Australia's battery rebate

Is it possible to get the WA rebate together with the federal discount?

Yes. One battery can have both, and your retailer takes both amounts off the quote.

Is there an application I need to submit for the federal battery rebate?

No, that's not needed. Your installer claims the certificates and removes the discount from the quote. A form you sign gives them that right.

Can you still get the WA battery rebate?

Yes. You can still apply for rebates and loans on the WA Government scheme page, until all the planned 100,000 rebates are used.