State Rebate
Solar Battery Rebate WA 2026
WA homeowners can save $3,884–$6,384 on a home battery in 2026 through the federal Cheaper Home Batteries program combined with the WA Distributed Energy Buyback Scheme + Battery Subsidy.
By Bec Ramirez
6 min read
The federal rebate takes about $3,610 off a 14 kWh battery installed before 1 January 2027, when it steps down.
Current battery rates end 1 January 2027 · 80 days remaining
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)
- Typical battery and installation cost
- $11,000
- Federal rebate (Cheaper Home Batteries)
- -$3,458
- WA Distributed Energy Buyback Scheme + Battery Subsidy
- -$3,800
- Your price
- $3,742
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 $258 per kWh (about 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.
- Point-of-sale discount applied directly to your quote.
- All SAA-approved batteries are eligible (Tesla, BYD, Sungrow and others).
- The program runs through 2030 with $7.2B in funding.
- Stackable with WA state incentives.
Your battery rebate, checked before you sign
The federal rebate takes about $3,610 off a 14 kWh battery installed before 1 January 2027, when it steps down. One Why Solar Approved installer near you, and fifteen minutes with a solar expert before you sign.
Current battery rates end 1 January 2027 · 80 days remaining
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.
WA program eligibility
- Must be a Synergy or Horizon Power customer
- Battery must be SAA-approved
- System installed by a SAA-accredited installer
- Horizon 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 | $3,458 | $9,000–$12,500 |
| BYD Battery-Box Premium | 10.2–20.5 kWh | $2,622–$4,598 | $6,000–$11,500 |
| Sungrow SBR | 9.6–25.6 kWh | $2,470–$5,396 | $5,100–$12,700 |
| Enphase IQ Battery | 10.08 kWh | $2,584 | $5,900–$15,500 |
| Alpha ESS SMILE5 | 5.7–34.2 kWh | $1,444–$6,004 | $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 are on the DCCEEW website.
You're eligible if
- You own an existing home in Western Australia
- You have solar panels or are installing solar with the battery
- You use a SAA-accredited installer
- The battery is SAA-approved (Tesla, BYD, Sungrow, Enphase and others)
- The program runs through 2030 ($7.2 billion in funding)
Not eligible
- New home builds under construction
- Battery-only systems without solar
- DIY installations (must use accredited installer)
- Non-SAA-approved battery systems
- Applications after funding is exhausted
See the battery rebate your quote should show
The federal rebate takes about $3,610 off a 14 kWh battery installed before 1 January 2027, when it steps down. Then a solar expert goes through it with you, and your quote, before you sign.
Current battery rates end 1 January 2027 · 80 days remaining
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
What is the solar battery rebate in WA for 2026?
WA homeowners can stack the federal Cheaper Home Batteries rebate (approximately $2,584 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 $6,384, the most generous combination in Australia.
What 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.
Can 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 $2,584 federal + $3,800 state = $6,384 total savings on a battery installation.
How 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 $3,742 after stacking (down from $11,000). For Synergy customers, the same battery would cost around $6,242. These are some of the lowest battery prices available in Australia.
When 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.
Sources
The next step
If you're considering a home battery system, Bec and the team can match you with one Why Solar Approved installer near you for a free written quote, and fifteen minutes with a solar expert before you sign.
Written by
Aussie Mum & Energy Expert
Helps families 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.
If you have any questions about the information in this guide, email hello@whysolar.com.au or call +61 2 5657 6527.