Solar Battery Western Australia 2026
WA's battery scheme offers up to $3,800 in state rebates plus $10,000 interest-free loans for Synergy customers. Stack with the federal rebate for massive savings on home battery storage in Perth and regional WA.
Why WA Is Australia's Best State for Batteries
Newest Battery Scheme
Launched July 2025, WA's scheme is the newest in Australia with fresh funding and strong government commitment to household battery adoption.
$10,000 Interest-Free Loan
Synergy customers can access a $10,000 interest-free loan repaid over 4 years through their electricity bill, making batteries effectively $0 upfront.
Highest Rebate for Regional WA
Horizon Power customers in regional and remote areas receive $380/kWh (up to $3,800) -- the highest per-kWh state battery rebate in Australia.
Abundant Solar Generation
Perth averages 8+ hours of peak sunshine daily. WA generates more excess solar per household than any other state, making batteries highly effective.
VPP Earnings
VPP participation is mandatory under the WA scheme, but it also means you earn $300-$800+ per year in VPP credits on top of your rebate savings.
Stackable Rebates
WA state rebate stacks fully with the federal Cheaper Home Batteries program for combined savings of $4,600-$7,100 on a 10kWh system.
WA Battery Scheme Details
The WA Distributed Energy Buyback Scheme battery incentive launched in July 2025 and offers different rebate levels depending on your electricity retailer.
Synergy Customers
Perth, Mandurah & South-West (SWIS)Best for: Perth metro residents who want $0 upfront cost with the interest-free loan covering the remaining balance after rebates.
Horizon Power Customers
Regional & Remote WABest for: Regional WA households with unreliable grid supply who benefit most from the highest per-kWh rebate in Australia.
Eligibility Requirements
- checkResidential Synergy or Horizon Power customer
- checkCEC-approved battery system (minimum 5kWh)
- checkAccredited CEC installer
- checkExisting solar system or concurrent installation
- checkVPP program participation agreement
- checkOwner-occupied or landlord approval
Federal Cheaper Home Batteries Program
All WA residents can also claim the federal battery rebate on top of the state scheme. The program offers approximately 30% off eligible battery systems, equating to roughly $300/kWh before May 1, 2026.
Combined WA + Federal Savings
*Federal rebate estimated at ~$302/kWh (2026 rate) for a 10kWh system. Actual savings may vary.
WA Battery Cost Breakdown 2026
Here's what a typical 10kWh battery installation looks like for a Synergy customer in Perth after all rebates and the interest-free loan.
Synergy Customer Breakdown
Horizon Power Customer Breakdown
*Based on average 10kWh battery installation cost of $11,000. Actual prices vary by brand and installer. Federal rebate estimated at ~$302/kWh (2026 rate).
Top Batteries for Western Australia
CEC-approved battery systems eligible for both the WA scheme and federal rebate. Prices shown after combined WA (Synergy) + federal rebates.
Tesla Powerwall 3
BYD Battery-Box Premium
Sungrow SBR
WA Battery Rebate FAQ
helpHow much is the WA battery rebate in 2026?
The WA battery rebate depends on your electricity retailer. Synergy customers receive $130/kWh up to 10kWh ($1,300 maximum) plus access to a $10,000 interest-free loan. Horizon Power customers receive $380/kWh up to 10kWh ($3,800 maximum). Both can be stacked with the federal Cheaper Home Batteries rebate of approximately $3,300 for a 10kWh system.
helpWhat is the difference between Synergy and Horizon Power battery rebates?
Synergy covers the South West Interconnected System (SWIS) including Perth, Mandurah, and the south-west. Synergy customers get $130/kWh (up to $1,300) plus a $10,000 interest-free loan. Horizon Power covers regional and remote WA and offers $380/kWh (up to $3,800) with no loan component, reflecting the higher value of battery storage in off-grid and fringe-of-grid areas.
helpDo I have to join a VPP to get the WA battery rebate?
Yes. Participation in a Virtual Power Plant (VPP) program is mandatory to receive the WA battery rebate. This means your battery may be called upon to discharge energy back to the grid during peak demand periods. In return, you receive the upfront rebate and may earn additional VPP credits of $300-$800 per year.
helpCan I stack the WA battery rebate with the federal rebate?
Yes. The WA battery scheme and the federal Cheaper Home Batteries program are fully stackable. For a Synergy customer with a 10kWh battery, this means $1,300 (WA) + ~$3,300 (federal) = $4,600 in rebates, plus access to a $10,000 interest-free loan. Horizon Power customers can receive $3,800 + ~$3,300 = $7,100 in combined rebates.
helpWhat is the $10,000 interest-free loan for WA batteries?
Synergy customers who install an eligible battery through the WA battery scheme can access a $10,000 interest-free loan repaid over 4 years through their electricity bill. This effectively eliminates the upfront cost of a battery when combined with the WA and federal rebates. Horizon Power customers are not eligible for the loan component.
helpWhen did the WA battery scheme launch and how long will it last?
The WA Distributed Energy Buyback Scheme (DEBS) battery incentive launched in July 2025. The program is funded through to 2028, but allocations are limited and may close early if demand exceeds supply. The federal Cheaper Home Batteries program runs through 2030 with tiered rebate changes from May 1, 2026.
helpAm I eligible for the WA battery rebate?
To be eligible, you must be a residential customer of Synergy or Horizon Power, install a CEC-approved battery system of at least 5kWh capacity, use an accredited installer, and agree to participate in a VPP program. You must also have an existing solar system or install one concurrently. The property must be owner-occupied or have landlord approval.
Related Resources
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Learn more →WA Solar Rebates
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Learn more →NSW Batteries
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Learn more →VPP Programs
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Learn more →Claim Your WA Battery Rebate
Get a personalised quote including the WA battery scheme rebate and federal Cheaper Home Batteries discount. Find out your exact savings in 60 seconds.