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A comprehensive guide to installing a home battery under the WA residential battery scheme, based on official Energy Policy WA guidelines (September 2025).
Most efficient option for adding batteries. Often called "battery ready inverters" - they communicate directly with DC-coupled batteries without needing gateway devices.
Recommended for new installsIncluding microinverters. You can still add batteries cost-effectively using AC-coupled systems with a gateway device to enable VPP participation.
Options availableYour hybrid inverter controls electricity flow between solar, battery, and home. It can communicate directly with a VPP if on the Synergy SSL.
Ensure your hybrid inverter is on the Synergy Supported Solutions List for Battery Rewards eligibility.
With backup wiring, hybrid inverters offer more options to charge and discharge batteries from solar during grid outages.
Key Benefits: Higher efficiency (~95% round-trip), simpler installation, better backup power options, no gateway device needed.
Your existing inverter continues to control solar-to-home electricity. A separate battery inverter manages charging/discharging. A gateway device enables communication between components and VPP participation.
Best when:
Considerations:
Keep your existing non-hybrid inverter and add a new hybrid inverter with DC-coupled battery. A gateway coordinates both inverters for VPP communication.
Best when:
Requirements:
Replace your existing inverter with a larger hybrid inverter and add a DC-coupled battery. This gives you the benefits of a modern hybrid system.
Best when:
Considerations:
Customers with three-phase supplies or multi-inverter systems can still access rebates and no-interest loans. Options include:
Three-phase hybrid or non-hybrid inverters
Single inverter across all phases
Single-phase inverters on one or more phases
Separate inverters installed on individual phases
Multiple inverters from different manufacturers
Gateway device coordinates all inverters
Multiple inverters in parallel on same phase
Must meet Western Power phase balancing limits
A gateway device is the "heart" of an AC-coupled system. It enables compatible inverters and batteries to communicate with each other and participate in a VPP like Synergy Battery Rewards.
If you're installing solar now and planning to add a battery later:
Choose a Hybrid Inverter
Makes adding a battery later simpler and more cost-effective
Add a Consumption Monitor
See how much electricity you use vs. generate. Much cheaper to install at the same time as your inverter.
Check SSL Compatibility
Ensure your hybrid inverter is on the Synergy Supported Solutions List for future rebate eligibility
Use our tools to find compatible batteries and get quotes from accredited installers.
Six questions, two minutes. We'll match you with CEC-accredited Perth installers who quote based on your actual usage.
Source:
Based on official guidelines from Energy Policy WA - "Installing a battery under the WA residential battery scheme" (September 2025).
Contact: EPWA-info@deed.wa.gov.au | (08) 6551 4600