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Fox ESS and Sungrow are both value-focused Chinese-made battery systems shortlisted in Perth. Sungrow is one of the most established and widely-installed brands locally; Fox ESS is newer but growing fast with a broad capacity range. Here's a fair, spec-led comparison for WA homes.
Quick answer
Fox ESS tends to suit value-focused buyers who want modular storage with a wide range of capacity options, and are comfortable with a newer but growing brand. Sungrow tends to suit value-focused buyers who want modular sizing, a strong track record, and a clean path to WA-rebate eligibility. For either brand, WA Battery Scheme eligibility comes from the system's Synergy SSL listing, with up to $1,300 off an eligible battery.
Sources: CEC register · Synergy SSL register · WA Battery Scheme
Specifications, pricing and eligibility change over time — always confirm the current details with your installer.
A value option with an unusually broad capacity range, from compact residential stacks to very large-capacity systems.
Origin
Chinese-made — a fast-growing global inverter-and-storage brand with an expanding Australian footprint.
Architecture
Modular high-voltage stackable storage (the ECS, EQ and newer CQ ranges) that pairs with a Fox ESS hybrid inverter.
Strengths
Things to weigh
WA rebate
Eligible for the WA Residential Battery Scheme rebate (up to $1,300) when installed with a Synergy SSL-approved inverter — confirm the exact system with your installer.
Tends to suit
Value-focused buyers who want modular storage with a wide range of capacity options, and are comfortable with a newer but growing brand.
A strong value-for-money option with a broad WA installer base. Often shortlisted by buyers who want a proven brand without the premium price.
Origin
Chinese-made — a large, long-established global manufacturer that is one of the more popular and well-regarded local brands in the Perth market.
Architecture
Modular stackable storage (the SBR low-voltage and SBH high-voltage ranges) that pairs with a compatible Sungrow hybrid inverter — so battery and inverter are designed to work together.
Strengths
Things to weigh
Australian support
Established Australian office and support presence.
WA rebate
Sungrow systems are widely listed on Synergy's Supported Solutions List, which generally makes them a straightforward fit for WA-rebate eligibility — confirm the exact model with your installer.
Tends to suit
Value-focused buyers who want modular sizing, a strong track record, and a clean path to WA-rebate eligibility.
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Two modular systems Perth buyers often shortlist together, compared spec by spec.
Retrofit vs new install, efficiency trade-offs, and which brands use each type.
A 10 kWh usable LFP tower that stacks in 5 kWh modules, with a 10-year warranty.
Not sold here and not on the approved-product register, so it earns no rebate.