Find out what battery your home actually needs
Updated 18 February 2026
How much can you save on a battery in Western Australia?
Here is what a typical battery installation looks like in WA after all available rebates are applied.
Example: Tesla Powerwall 3 (13.5 kWh)
*Estimate only. Actual price varies by installer, configuration, and location within WA.
What is the Cheaper Home Batteries Program?
The federal Cheaper Home Batteries program is a $7.2 billion initiative providing approximately $252 per kWh (~30% off) on the first 14 kWh of an eligible battery system. It is available to all Australian homeowners with solar when using a SAA-accredited installer.
Since 1 May 2026, tiered rates apply: the first 14 kWh receives 100% of the STC factor, 14 to 28 kWh receives 60%, and 28 to 50 kWh receives 15%. The STC factor steps down again on 1 January 2027 and every six months until the program closes in 2030, so installing sooner secures a larger discount.
- check_circlePoint-of-sale discount applied directly to your quote
- check_circleAll SAA-approved batteries eligible (Tesla, BYD, Sungrow, etc.)
- check_circleProgram runs through 2030 with $7.2B in funding
- check_circleStackable with WA state incentives
Find out what battery your home actually needs
Free, takes 60 seconds, no obligation.
Over 3.6 million homes already claiming rebates
WA Distributed Energy Buyback Scheme + Battery Subsidy
Western Australia offers battery subsidies through Synergy (up to $1,300) and Horizon Power (up to $3,800) as part of the Distributed Energy Buyback Scheme. These subsidies stack with the federal Cheaper Home Batteries rebate for the highest combined savings in Australia.
checklistWA Program Eligibility
- checkMust be a Synergy or Horizon Power customer
- checkBattery must be SAA-approved
- checkSystem installed by a SAA-accredited installer
- checkHorizon Power customers in regional WA get higher subsidies
Eligible Batteries and Rebate Amounts
All SAA-approved battery systems are eligible for the federal rebate. Here are popular options with estimated savings for WA homeowners:
| Battery System | Capacity | Est. Federal Rebate | Price After Rebate |
|---|---|---|---|
| Tesla Powerwall 3 | 13.5 kWh | $3,400 | $9,000–$12,500 |
| BYD Battery-Box Premium | 10.2–20.5 kWh | $2,500–$4,500 | $6,000–$11,500 |
| Sungrow SBR | 9.6–25.6 kWh | $2,400–$5,300 | $5,100–$12,700 |
| Enphase IQ Battery | 10.08 kWh | $2,500 | $5,900–$15,500 |
| Alpha ESS SMILE5 | 5.7–34.2 kWh | $1,400–$5,900 | $6,800–$11,000 |
*Prices are estimates and vary by installer, location, and installation complexity. WA state incentives can reduce prices further.
Battery Rebate Eligibility in WA
Full eligibility criteria is available on the DCCEEW website.
check_circleYou're Eligible If:
- checkYou own an existing home in Western Australia
- checkYou have solar panels or are installing solar with the battery
- checkYou use a SAA-accredited installer
- checkThe battery is SAA-approved (Tesla, BYD, Sungrow, Enphase, etc.)
- checkThe program runs through 2030 ($7.2 billion in funding)
cancelNot Eligible:
- closeNew home builds under construction
- closeBattery-only systems without solar
- closeDIY installations (must use accredited installer)
- closeNon-SAA-approved battery systems
- closeApplications after funding is exhausted
See what a battery would save you
Based on your usage and current tariff.
Over 3.6 million homes already claiming rebates
How to Claim Your Battery Rebate in WA
Get a free quote
Request a quote through Why Solar. We assess your home and recommend the best battery for your usage.
Confirm eligibility
We verify your eligibility for the federal Cheaper Home Batteries rebate and any state programs.
Rebate applied at checkout
The rebate is applied as a point-of-sale discount. You see the reduced price on your invoice.
Installation
Our SAA-accredited installers handle everything, including all paperwork and grid connection.
WA Battery Rebate FAQ
helpWhat is the solar battery rebate in WA for 2026?
WA homeowners can stack the federal Cheaper Home Batteries rebate (approximately $2,520 for 10kWh) with the WA battery subsidy (up to $3,800 for Horizon Power customers or $1,300 for Synergy customers). Horizon Power areas can save up to $6,800+, the most generous combination in Australia.
helpWhat is the difference between the Synergy and Horizon Power battery subsidies?
Synergy customers in the South West Interconnected System (Perth metro and surrounds) can receive up to $1,300. Horizon Power customers in regional WA can receive up to $3,800, reflecting the higher value of batteries in remote grids. Both stack with the federal rebate.
helpCan I stack the WA battery subsidy with the federal rebate?
Yes. The WA battery subsidy and the federal Cheaper Home Batteries rebate are fully stackable. A Horizon Power customer could receive $2,520 federal + $3,800 state = $6,800+ total savings on a battery installation.
helpHow much does a battery cost in WA after all rebates?
For Horizon Power customers, a 13.5kWh Tesla Powerwall 3 could cost as little as $3,900 after stacking (down from $11,000). For Synergy customers, the same battery would cost around $6,400. These are some of the lowest battery prices available in Australia.
helpWhen do the WA battery rebates expire?
The WA battery subsidies are ongoing with no announced end date. The federal component is now in its tiered phase (since 1 May 2026): the first 14 kWh receives the full rebate, then 60% for the next 14 kWh, then 15% beyond that. The federal STC factor steps down again on 1 January 2027, so installing sooner secures the best combined savings.
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The next step
If you have any questions about the information in this guide, feel free to get in touch:
Email: hello@whysolar.com.au
Tel: +61 2 5657 6527
If you're considering a home battery system, Bec and the team can help you get quotes from trusted, pre-vetted local installers:
Written by
Bec RamirezAussie Mum & Energy Expert
Helping families navigate the switch to solar with practical, real-world advice. Bec focuses on the financial side — rebates, bill savings, and financing options — so everyday Australians can see real value from going solar.
Learn more about Bec Ramirez