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Tesla's Powerwall 3 and Sungrow's SBR/SBH range are two of the most commonly shortlisted batteries in Perth — but they sit at different ends of the market. Tesla is a premium, US-owned all-in-one with an integrated inverter; Sungrow is a value-focused, modular Chinese-made system with a broad WA installer base. Below is a spec-led look at how they actually differ for a Western Australian home, not a verdict — the right pick depends on your usage, budget and backup needs.
Quick answer
Tesla tends to suit buyers installing solar and battery together who want a single integrated unit and a familiar brand, and are comfortable paying a premium for it. 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
| Topic | Tesla | Sungrow |
|---|---|---|
| Tends to suit | Buyers installing solar and battery together who want a single integrated unit and a familiar brand, and are comfortable paying a premium for it. | Value-focused buyers who want modular sizing, a strong track record, and a clean path to WA-rebate eligibility. |
| WA rebate | The Powerwall 3's integrated inverter is not on Synergy's SSL, so a Powerwall 3 system is not eligible for the WA Residential Battery Scheme 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. |
| How it's built | AC-coupled all-in-one. The Powerwall 3 includes its own inverter, so it works alongside (or in place of) your existing solar inverter rather than needing a separate hybrid unit. | 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. |
| Origin | US-owned — one of the few widely-available batteries not Chinese-made. | Chinese-made — a large, long-established global manufacturer that is one of the more popular and well-regarded local brands in the Perth market. |
| Australian support | Established Australian operations and installer network. | Established Australian office and support presence. |
Specifications, pricing and eligibility change over time — always confirm the current details with your installer.
A well-known, popular choice in Perth, positioned at the premium end. Recognised more for its integrated ecosystem and app than for being the cheapest option.
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.
Strengths
Tesla
Sungrow
Things to weigh
Tesla
Sungrow
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Both systems sit in the desk's index of solar batteries for Perth — every CEC-approved model on the same comparable dataset.
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.
The two all-in-one towers on Synergy's list, compared on backup, warranty terms and EV charging.
See annual savings and payback for your system, on current Synergy rates and WA rebates.
On sale here, but not on the approved-product register, so it earns no rebate.