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Sigenergy and Sungrow are two of the more popular Chinese-made battery brands in Perth right now, and they're often shortlisted against each other. Both are modular, but they take different approaches: Sigenergy's SigenStor is a high-power DC tower with strong backup options, while Sungrow's SBR/SBH range pairs with its own widely-installed hybrid inverters at competitive value. Here's a fair, spec-led comparison for WA homes. Sigenergy's SigenStor line spans two CEC-approved hardware generations — modules first approved Jan 2024 and a newer generation from Jan 2026 — both remain CEC-active and individually resolvable; see the generation breakdown for what changed.
Quick answer
The choice mostly comes down to whether you prioritise Sigenergy's higher power and backup capability or Sungrow's lower cost per kWh and longer market track record. Pick Sigenergy if you want high power output and strong three-phase or whole-home backup from an all-in-one stack. Pick Sungrow if you want a lower cost per kWh and a longer, well-established track record. 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: Synergy SSL register · WA Battery Scheme · SBP buyer-fit assessment
Specifications, pricing and eligibility change over time — always confirm the current details with your installer.
A rising challenger known for high-power, flexible SigenStor systems that combine inverter, battery and (optionally) EV charging in one stack.
Origin
Chinese-made — a newer but rapidly-growing brand that has gained strong traction in the Perth market.
Architecture
Modular DC-coupled 'tower' (SigenStor) that integrates the hybrid inverter and stackable battery modules, with strong three-phase and backup options at higher configurations.
Strengths
Things to weigh
Australian support
Has an Australian office and is regarded as well-supported locally.
WA rebate
Check the specific SigenStor configuration against Synergy's Supported Solutions List for WA-rebate eligibility — your installer can confirm.
Tends to suit
Buyers who prioritise power output, three-phase or whole-home backup, and an all-in-one stack, and are comfortable with a fast-growing newer 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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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.