Inverter compatibility (avoid mismatches)

A battery and an inverter work together when four checks line up: both the battery and the inverter appear on the approved lists that apply to them, the brand confirms the pairing, the inverter is listed on the Synergy Supported Solutions List (SSL) in the Synergy area, and the household is enrolled in a qualifying Virtual Power Plant (VPP) product. Miss any one of these and you can end up with hardware that runs but is locked out of a scheme, or a pairing the manufacturer will not warrant.

Run the four checks below before you sign a quote. They take minutes and they catch the mismatches that cost the most to unwind later.

What four checks confirm a battery and inverter are compatible and rebate-eligible?

1. Approved lists, on both sides. The battery and the inverter must each appear where they are required, including the Clean Energy Council's approved-products list. A product missing from the list that applies to it cannot be used to claim the rebate or scheme it gates, even if it works electrically.
2. The brand's own pairing guide. Some brands publish their tested pairings and the firmware version each side needs to run. Where a brand publishes one, treat it as the deciding source for that combination.
3. SSL status in the Synergy area. For a system to join a VPP or take part in the WA battery rebate, the inverter (or all-in-one unit) has to be on the Supported Solutions List, and the battery itself needs to be a VPP-capable product on that same list. Off-list hardware, on either side, is ineligible for the rebate, Battery Rewards and the interest-free loan.
4. VPP enrolment. The rebate is conditional on signing up to a qualifying VPP product through Synergy or an approved alternative retailer, not just on owning eligible hardware. Confirm which VPP product your installer is enrolling you in before you sign.

What is the SSL, and why does it decide your rebate?

The SSL is Western Australia's official register of inverters and VPP-capable batteries approved for connecting to the Synergy network. It is one of the gates for the state's battery programs: the rebate, the Battery Rewards VPP, and the interest-free loan all require both the inverter and the battery to be listed, on top of the mandatory VPP enrolment. The rebate itself is worth $130 per kWh of usable capacity, capped at $1,300.

Check both the inverter and the battery against the current SSL, confirm the brand approves that specific pairing, and confirm which VPP product the install will enrol you in.

For the full list of what qualifies and how the scheme fits together, see the Synergy approved products (SSL) guide.

Do AC-coupled retrofits change the compatibility rules?

Adding a battery to an existing solar system is where compatibility gets simpler. An AC-coupled battery brings its own inverter, so it sidesteps the hybrid-pairing question with your current solar inverter: the two do not have to be a matched set. What it does not sidestep is the battery's own inverter. Backup capability and power limits depend on that unit, not on your original solar inverter, so a retrofit still turns on which battery-inverter you choose.

The trade-off between adding an AC-coupled battery and replacing your inverter with a hybrid is a decision in itself. The AC vs DC coupled batteries comparison walks through which suits a retrofit and which suits a new build.

How do you check compatibility before you sign a quote?

Ask the installer for the exact model codes on both the battery and the inverter, then confirm four things: the inverter and the battery are both on the current SSL, the brand lists the two as a tested pairing with the firmware each requires, and you know which VPP product you'll be enrolled in. Model codes, firmware, and VPP offerings move, so a pairing that was valid last year can shift with an update. If a quote names a battery brand but is vague on the inverter or the VPP enrolment, that is the gap to close before you commit.

If you are still choosing hardware rather than checking a quote, the battery brand comparison and the budget vs premium breakdown help you shortlist inverters and batteries that are known to pair.

Skip the compatibility guesswork

Compare quotes from Perth installers you choose and each one will quote a compatible, SSL-listed system for your setup. Prefer to narrow the hardware first? Compare inverters side by side.

Where next

Sigenergy vs Sungrow: Perth battery comparison

Two modular systems Perth buyers often shortlist together, compared spec by spec.

AC coupled vs DC coupled battery: which is better?

Retrofit vs new install, efficiency trade-offs, and which brands use each type.

Sigenergy SigenStor 10T: specs and Perth pricing

A 10 kWh usable LFP tower that stacks in 5 kWh modules, with a 10-year warranty.

Sodium-ion batteries in Australia: availability and price

Not sold here and not on the approved-product register, so it earns no rebate.

Explore your options

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