Solis vs Sungrow inverter Perth: which budget-friendly Chinese brand is right for your home?

Solis and Sungrow sit close together at the budget-to-mid-tier end of a Perth quote, and a good installer will fit either. The short version: both carry a 10-year standard warranty on current Australian models, both run at around 97 to 98% efficiency, and the real-world generation difference on a Perth roof is tiny. Sungrow has the far larger local footprint, so more Perth installers have handled its gear and its warranty claims. Solis is usually a touch cheaper for the same capacity, and its hybrid range works with a wider set of batteries. If you want a hybrid that can bring a battery into the WA rebate, both brands have hybrid models that can be approved for DER Storage on the SSL, and it's that inverter approval, not a battery listing, that makes the paired battery rebate-eligible, provided you're also enrolled in an approved VPP or Battery Rewards program. Confirm the exact model's current SSL status with your installer. When the choice is close, your installer's experience with the specific brand matters more than the badge on the box.

At a glance:

• Warranty: both 10 years standard on current Australian models, extendable with registration.
• Efficiency: both peak in the 97 to 98% band; the gap is too small to change your bill.
• Local support: Sungrow is deeper in Perth, so more installers and service techs have handled it.
• Battery choice: the Sungrow SH hybrid locks to the Sungrow SBR; the Solis hybrid takes its own battery plus some third-party options.
• Price: Solis is usually a little cheaper for the same capacity, but installer-to-installer variation is wider than the brand gap.
• WA rebate: both have a hybrid range that can be approved for DER Storage on Synergy's SSL, and it's that inverter approval (not a battery listing) that qualifies the paired battery for the WA Battery Rebate, provided you're enrolled in an approved VPP or Battery Rewards program. Confirm the specific model's current SSL status with your installer.

Here's the plain, side-by-side comparison.

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Who makes each inverter?

Sungrow (Sungrow Power Supply) was founded in 1997 and is one of the world's two or three largest inverter makers by volume. It entered the Australian market around 2012 and runs a dedicated local warranty and service operation. Sungrow holds the largest inverter-specific market share in Australian residential and commercial solar, which is why it turns up in so many Perth quotes.

Solis (Ginlong Technologies) was founded in 2005 and is a significant global inverter manufacturer with a smaller but growing Australian presence. Solis has had an Australian office and CEC-approved product listings since around 2015, and its inverters are increasingly common on Perth quotes.

If you want the wider field rather than a two-brand shootout, our Perth solar inverter types guide explains the formats these two sit inside.

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Which string inverters do they sell in Perth?

Both brands cover the same residential range: single-phase units for most Perth homes, plus a three-phase option for larger systems.

Sungrow's current residential string range:

The SG5RS runs dual MPPT and peaks around 97.8% efficiency. It is fan-cooled, which suits Perth's summer roof temperatures.

Solis's current residential string range:

The S6 single-phase runs dual MPPT and peaks around 97.7% efficiency. Smaller models are naturally cooled, so they run fanless.

For a plain-English walkthrough of what those spec numbers actually mean, see how to read solar inverter specs.

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Which hybrid inverter do they sell, and does it lock you to a battery?

This is where the two brands diverge, and it is the part worth reading closely if you plan to add a battery.

Sungrow SH series. The single-phase SH5RS/SH6RS and three-phase SH10RT are the most common hybrids on Perth quotes. The SH is DC-coupled and pairs only with Sungrow's own SBR battery: no third-party batteries. It peaks around 97.5% efficiency, supports backup with the SBR, and has strong installer support across Perth. Most hybrid-with-battery quotes you see will include an SH.

Solis S6 hybrid. The Solis hybrid is DC-coupled to the Solis EHV-B battery, and it also works with some third-party batteries. It is less common in Perth than the Sungrow SH, so installer familiarity varies more.

The trade-off is straightforward: the Sungrow SH gives you the deepest Perth installer support but locks you to the SBR battery, while the Solis hybrid gives you more battery choice but a thinner local support base.

Both hybrid ranges include models that can be approved for DER Storage on Synergy's Supported Solutions List, and it's that inverter approval, not the battery, that determines rebate eligibility. Pairing an SSL-approved hybrid with its battery, plus enrolling in an approved VPP or Battery Rewards program, keeps you inside the WA Battery Rebate ($130/kWh, capped at $1,300 for Synergy customers). Confirm the exact model's current SSL status with your installer if a battery is on your near-term plan.

If you're weighing whether to buy the hybrid now or add a battery later, our hybrid inverter guide for Perth covers the battery-ready decision in detail.

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Solis vs Sungrow: the side-by-side

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Is there a real performance difference in Perth?

Not one you'll notice. A single-percentage-point gap in peak efficiency does not translate into a bill you can feel. On a typical Perth roof, a well-sized 6.6 kW system generates in the region of 1,500 kWh per kW each year, and the inverter brand is not what moves that number. Panel quality, system sizing, shading, and orientation matter far more than whether the badge says Solis or Sungrow.

Efficiency figures also vary by model, so check the datasheet for the exact unit you're quoted rather than assuming the range top.

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Which monitoring app is better?

Sungrow iSolarCloud is a mature, well-developed platform on web and mobile. It shows real-time power flow, historical generation, battery state on the SH hybrid, consumption, and export. Most Perth installers know it well, and it is generally rated one of the better monitoring apps at this price point.

Solis SolisCloud is also web and mobile, with real-time data, generation history, and alerts. It does the job for homeowner monitoring. Fewer Perth installers use it day to day, so hands-on local familiarity is thinner than with iSolarCloud.

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How much do they cost installed in Perth?

These are approximate installed prices for a 6.6 kW Perth system, and they move with your roof, switchboard, and installer. Treat them as a directional guide, not a quote.

String inverter only:

Hybrid inverter, no battery:

Both brands land in a very similar band. Solis is often quoted around $200 to $500 less per system, but the overlap is real: the spread between two installer quotes for the same brand is usually wider than the gap between the brands. Chase the installer, not the badge.

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So which should you choose?

Choose Sungrow if:

• You want the deepest Perth installer base and the strongest post-installation service network.
• Your battery plan points at the Sungrow SBR, the most common DC-coupled battery in Perth.
• Your installer already works in the Sungrow ecosystem and knows iSolarCloud.

Choose Solis if:

• Your installer has real Solis experience and a service relationship with the brand.
• You want broader third-party battery choice on the hybrid.
• A small price saving matters at the margin and you're comfortable with a thinner local support base.

When it's a close call: for most Perth buyers comparing these two at the string-inverter level, both are capable products at similar prices. Sungrow's installer depth is a genuine edge for post-installation support, because a Sungrow-trained installer or service tech is simply more likely to be nearby. If service coverage is your priority, Sungrow is the safer pick. If your installer is a Solis specialist and the price is right, Solis is a credible choice: just confirm who handles a warranty claim before you sign.