WA Home Battery Rebate: New Players Join The Game

Synergy’s supported solutions list for Western Australia’s Residential Battery Scheme was updated last month, and again on Monday. See the newer kids on the WA battery rebate block, some with a catch.

Which Manufacturers Were Added To Synergy’s List?

Since its August update, models from the following inverter and battery manufacturers have been added to the Synergy supported solutions list:

• Hyxi Power – HYX-H(3-6)K6-HS and HYX-H(3-8)K-HS single-phase hybrid inverters.
• SolarEdge – SEK(5-10K)-AUB three-phase hybrid inverters, SE(3000-10000)H single-phase hybrid inverters, SE(3000-10000)H-MM HomeHub inverters.
• Solplanet – ASW(3000-6000)H-S2 hybrid inverters.
• EsySunHome – HM6 all-in-one battery system.
• Solis – S5-EH1P(3-6)K-L hybrid inverters.
• SMA – SBSE(3.6-6.0)-50 Sunny Boy Smart Energy hybrid inverters.

All these new players had applications for Western Australia’s scheme submitted prior to June 30; so they’ve been waiting a long time for approval. Still conspicuous by its absence from the list is Tesla.

The recent additions make for a total of 18 brands on the supported solutions list, all of which along with eligible models can be viewed here.

The Catch

In the case of Solplanet, EsySunHome, Solis and SMA, the current model listings also require what’s referred to by Synergy as the “Catch Power gateway” and “Catch Power Catch Solar Relay”, which would be Catch Power’s Catch Control. This is a very useful but pricey bit of kit, with the 2-Channel Catch Control (formerly Relay) costing $447 and the newer 6-channel device is now $726 — a significant drop in price since it was first released.

Horizon Power’s Approved Inverter List

For those in the Horizon Power service area, its approved inverter list for the Residential Battery Scheme can be found here — currently only 8 manufacturers are listed.

Horizon says:

“For Basic EG connections, only the following inverter makes and models are initially compatible with the SGD (supplied by us). This list will continue to grow as more inverters become compatible.”

A couple of acronyms there to explain — EG stands for Embedded Generator and SGD stands for Secure Gateway Device (SGD). Part of Horizon’s Smart Connect Solar initiative, an SGD is a small box of electronics enabling Horizon Power to remotely throttle or switch off systems in a scenario where the level of electricity being exported into the grid threatens network stability.

Horizon supplies and maintains the SGD free of charge.

WA Residential Battery Scheme Recap

Western Australia’s scheme kicked off on July 1, 2025.

In Synergy’s service area, the state rebate is worth $130 per kilowatt-hour of usable battery capacity up to 10 kWh; meaning a maximum rebate of $1,300. In the Horizon service area, the WA battery rebate is worth $380 per kilowatt-hour of usable battery capacity up to 10 kWh — a maximum rebate of $3,800.

In addition to the state incentive, the national government battery rebate — currently worth around $330 (after admin fees) per kilowatt-hour usable capacity  — can be combined with it. So, an eligible 10 kWh battery system installed in Synergy’s service area can get around $6,600, and in the Horizon area, ~ $7,100 with the two incentives combined.

Another Catch – VPP Participation

Speaking of catches, it seems a big one for quite a few WA solar owners considering a home battery is a state rebate requirement requiring connection to a Virtual Power Plant (VPP). The thought of giving a third-party control over their battery has proved to be a deal-breaker for some, who have chosen to take a financial hit by only opting for the national rebate. The national scheme requires systems being VPP-ready, but participation in a VPP program isn’t required.

Western Australians aren’t exactly spoiled for choice when it comes to VPPs. For Synergy customers, there’s Synergy’s Battery Rewards or Plico Energy VPP. You can see how these programs stack up on SolarQuotes’ VPP comparison page. In Horizon Power’s area, there’s only Horizon Community Wave.

You can read our full explainers for Western Australia’s Residential Battery Scheme here and the national Cheaper Home Batteries program here.