State Rebate
WA battery rebate 2026: Synergy, Horizon Power and federal
A Perth (Synergy) home gets about $3,884 off a 10kWh battery in 2026: the federal $2,584 plus the WA Residential Battery Scheme's $1,300. Regional Horizon Power homes get up to $3,800 from the state scheme instead, and both need the battery in a VPP (WA Government scheme requirements, May 2026). From 1 January 2027 the federal rebate on a 14kWh battery drops to about $3,002.
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.
Battery rebate steps down on 1 January 2027 (rate set by install date)
How much can you save on a battery in Western Australia?
Here is what a typical battery installation looks like in WA after the rebates a typical owner-occupier can count on. Incentives with conditions are listed separately below and are not included.
Example: Tesla Powerwall 3 (13.5 kWh)
- Typical battery and installation cost
- $16,000
- Federal rebate (Cheaper Home Batteries)
- -$3,458
- WA Residential Battery Scheme
- -$1,300
- Your price
- $11,242
Estimate only. Actual price varies by installer, configuration and location within WA.
The WA Residential Battery Scheme counts the first 10kWh only, so a bigger battery does not earn a bigger state rebate.
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 households and small businesses installing a battery with new or existing solar, through a SAA-accredited installer.
See how the federal battery rebate is worked out, battery size by battery size, or every WA solar and battery rebate on one page.
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.
- Batteries on the Clean Energy Council approved list are eligible (Tesla, BYD, Sungrow and others).
- The program runs through 2030 with $7.2B in funding.
- Stackable with the WA Residential Battery Scheme.
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.
Battery rebate steps down on 1 January 2027 (rate set by install date)
WA Residential Battery Scheme
The WA Residential Battery Scheme pays Synergy customers in Perth and the South West $130 per kWh, up to $1,300 on the first 10kWh, on top of the federal Cheaper Home Batteries rebate. Horizon Power customers in regional and remote WA get $380 per kWh, up to $3,800, instead. Joining a Virtual Power Plant is mandatory for both.
WA program eligibility
- Synergy customers only, which is Perth and the South West Interconnected System
- Virtual Power Plant participation is mandatory
- The battery must be on the scheme’s supported-solutions list
- The install must be done by a vendor in the approved vendor directory
- Paid at $130 per kWh and capped at 10kWh usable, so it does not scale with a larger battery
Other WA incentives, with conditions
These exist, but most households cannot count on them, so they are not in the figures above. Check each condition before you plan around one.
WA Residential Battery Scheme (Horizon Power): Up to $3,800, regional and remote WA only
- Horizon Power customers only, which is regional and remote WA, not Perth or the South West grid
- Virtual Power Plant participation is mandatory
- The battery must be on the scheme’s supported-solutions list
- The install must be done by a vendor in the approved vendor directory
- Paid at $380 per kWh and capped at 10kWh usable
Eligible batteries and rebate amounts
Batteries on the Clean Energy Council approved list 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. The WA Residential Battery Scheme can reduce prices further.
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.
Battery rebate steps down on 1 January 2027 (rate set by install date)
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 on the Clean Energy Council approved list (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)
- Batteries not on the Clean Energy Council approved list
- Applications after funding is exhausted
How to claim your battery rebate in WA
Tell us about your home and bill
Answer a few questions about your home, your power bill and the battery you are weighing up. We match you with one Why Solar Approved installer.
Confirm eligibility
Your solar expert calls to check you qualify for the federal Cheaper Home Batteries rebate and any state program, and whether a battery makes sense for your bill.
Rebate applied at checkout
The rebate is applied as a point-of-sale discount. You see the reduced price on your quote and invoice.
Installation
Your Why Solar Approved installer fits the battery and lodges the paperwork; your solar expert checks the quote first.
WA battery rebate FAQ
What is the solar battery rebate in WA for 2026?
WA homes get the federal Cheaper Home Batteries rebate (about $2,584 on 10kWh, $3,610 on 14kWh) plus the WA Residential Battery Scheme: up to $1,300 for Synergy customers in Perth and the South West, or up to $3,800 for Horizon Power customers in regional WA. A Perth home with a 10kWh battery gets about $3,884 in total.
What is the difference between the Synergy and Horizon Power rates?
Who sells you your electricity decides the rate. Synergy customers (Perth and the South West Interconnected System) get $130 per kWh, up to $1,300. Horizon Power customers in regional and remote WA get $380 per kWh, up to $3,800. Both stop at 10kWh and both stack with the federal rebate.
Can I stack the WA battery rebate with the federal rebate?
Yes. A Synergy customer with a 10kWh battery gets $2,584 federal plus $1,300 from the state, about $3,884 in total. The battery must be on the scheme's supported list, installed by an approved vendor and joined to a VPP.
How much does a battery cost in WA after the rebates?
For a Synergy customer, a 13.5kWh Tesla Powerwall 3 at $16,000 installed comes to about $11,242 after both rebates. Horizon Power customers get a larger state rebate. Installed prices vary by installer, so your solar expert checks the quote before you sign.
When does the federal battery rebate change next?
On 1 January 2027 the battery STC factor falls from 6.8 to 5.7 per kWh, so a 14kWh battery's discount drops from about $3,610 to about $3,002. It then steps down every six months until the program closes in 2030. The tiers stay the same: the first 14kWh gets 100% of the factor (around $258/kWh today), 14 to 28kWh gets 60%, and 28 to 50kWh gets 15% (Clean Energy Regulator).
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.