LONGi is the world’s largest maker of monocrystalline silicon wafers, and one of the biggest panel manufacturers on the planet. That scale doesn’t tell you whether their panels belong on your roof. What does: the technology inside them, how they hold up in Perth’s heat, and what the warranty actually covers when you’re not watching.
This guide covers the LONGi panels worth fitting on a Perth home in 2026. Not every model in the catalogue suits a house. We’ve narrowed it to the residential-format panels Perth Solar Warehouse installs and supports, with the specs, the warranty detail, and the WA context you need to decide with confidence.
- The current residential generation is the Hi-MO X10, sold in Australia under LONGi's EcoLife banner.
- It runs on HPBC 2.0 cells: N-type, back-contact, with no busbar lines across the front of the panel. That lifts module efficiency to around 24% and gives the panel a clean, uniform black face.
- The residential range sits in the 475W to 500W band in the standard 54-cell format (about 1800×1134mm, 21.6kg). Avoid larger panels (510W and up) on houses. They don't fit cleanly around hips, valleys and roof hardware, and they load more weight onto each mounting point.
- Australian-market warranty: 25 years on the product and 30 years on performance, with the panel warranted to hold at least 88.85% of its rated output after 30 years.
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LONGi makes only monocrystalline panels, which are more efficient than the older polycrystalline modules some budget brands still sell. The company runs its own supply chain from raw silicon ingots through to finished modules, and that control over the whole process shows up two ways for you: tight pricing, and consistent cell quality batch to batch.
Two things make the scale matter. First, a manufacturer big enough and stable enough to still be around in 25 years is a manufacturer whose warranty is worth something. A long warranty from a company that folds is just paper. Second, LONGi keeps a local office and an Australian warranty claims process, which sounds dull until the day you actually need to make a claim.
None of that makes them automatically the right panel for your roof. But it’s why they keep turning up on the shortlist, and why we’re comfortable putting our name behind the install.
Moving the contacts to the rear means more of the cell surface is free to catch light, which is where the efficiency gain comes from. It also gives the panel a flat, uniform black appearance that sits well on a modern roof. Up front, the X10 reaches module efficiencies around 24%, which is near the top of what’s available in this format.
There’s a practical bonus built into the cell design. A shading optimiser lets current route around a shaded section, so a vent shadow, a chimney, or a stray branch in the late afternoon doesn’t drag the whole panel down the way it would on an older design.
Why this matters in Perth: heat. Push a panel from 25°C up to 45°C and a -0.26%/°C module gives up about 5.2% of its output. That sounds small. Across January and February, when your air-con is working hardest and the roof is baking, holding onto those fractions of a percent is the difference between a panel that coasts through summer and one that wilts in it. Perth roof surfaces routinely climb past 60°C on a hot day, so the temperature number is one of the specs we actually pay attention to.
LONGi recently moved its rooftop range onto the Hi-MO X10 platform and put it under a residential brand called EcoLife. The whole range is built on the same HPBC 2.0 cell in the standard 54-cell layout (108 half-cells), the format that fits Australian roofs without the size and weight penalties of commercial panels. What changes between variants is the glass, the finish, and which one suits your roof and your budget.
The workhorse is the Explorer. It’s the version most Perth homes will end up with, and it’s the one we’ve spec’d out in full below.
Specification | Single glass | Dual glass (black) |
|---|---|---|
Model code | LR7-54HVH 475M | LR7-54HVD 475M |
Power output | 475W | 475W |
Cell technology | HPBC 2.0, N-type back contact | HPBC 2.0, N-type back contact |
Module efficiency | 23.3% | 23.3% |
Cell configuration | 108 half-cut (54-cell) | 108 half-cut (54-cell) |
Construction | Single glass (glass and backsheet) | Dual glass (glass-glass) |
Finish | Black frame, white backsheet | Full black |
Dimensions | 1800×1134×30mm | 1800×1134×30mm |
Weight | 21.6kg | 21.6kg |
Temperature coefficient (Pmax) | -0.26%/°C | -0.26%/°C |
Best suited to | Most Perth homes, non-coastal | Street-facing roofs, coastal or humid sites |
Product warranty (Australian market) | 25 years | 25 years |
Performance warranty | 30 years, ≥88.85% at year 30 | 30 years, ≥88.85% at year 30 |
Datasheet | Download | Download |
*Product warranty varies by specific model code. Always confirm the warranty tier on the datasheet for the exact panel quoted to you. Perth Solar Warehouse will confirm this during the quoting process.
The single-glass model is the one most homes will land on. It’s the value pick, it performs identically to the dual-glass version in the sun, and on a roof that isn’t especially visible from the street there’s no reason to spend more.
The dual-glass black model earns its place in two situations. If the array faces the street and you want it to read as one clean dark surface rather than a grid of cells, the full-black finish does that. And if you’re near the coast, the glass-glass construction holds up better against salt mist and humidity over a 25-year life, which counts for more in WA’s coastal suburbs than people expect. It covers both jobs in the one panel.
LONGi’s own guidance calls for extra anti-corrosion treatment on any panel within 50m of the beach, whatever the brand, so if you’re right on the water this should be considered into the design.
LONGi makes a larger 60-cell X10 module too, the LR7-60HVH, with outputs from 535W to 560W. It’s a good panel, and at first glance the maths looks tempting: more watts per panel means fewer panels on the roof. Some installers will quote it on homes for exactly that reason, because the per-watt cost looks attractive on paper. Here’s why we don’t default to it on a standard house.
The 60-cell module is bigger and heavier than the residential 54-cell: 1990×1134×30mm and about 25kg, against 1800×1134×30mm and 21.6kg. That’s roughly 190mm more length and 3.4kg more weight per panel. Sounds minor, until it meets a real Perth roof. Roofs have hips, valleys, chimneys, whirlybirds and satellite dishes, and the usable area comes in awkward shapes. A 2m panel can’t tuck into the gaps a 1.8m panel fills comfortably, so you can end up fitting fewer panels and wasting roof, which cancels out the per-watt saving you were chasing. The heavier module also puts more load on each mounting point, which matters on the timber-framed roofs common across Perth’s older suburbs.
A 54-cell panel at 1800×1134mm and 21.6kg is the right tool for most houses. At 475W, 14 panels make a 6.65kW system, roughly 27m² of roof. That’s a clean fit on most Perth homes. Where a roof is large and uncomplicated, or a design genuinely benefits from the bigger format, we’ll reach for the 60-cell. It’s a per-roof call, not the default.
Two warranties come with the panels, and they cover different things. Knowing the difference is worth a minute before you compare brands.
Product warranty
Materials and workmanship
The product warranty covers defects in materials and workmanship: the panel itself failing, not just fading with age. On the Australian X10 range, that’s 25 years. Always confirm the figure on the datasheet for the exact model you’re quoted, because warranty tiers can differ between variants.
Performance warranty
Power output degradation
The performance warranty covers output over time. LONGi warrants the X10 to lose no more than about 1% in its first year, then no more than 0.35% a year after that, holding at least 88.85% of its original rated output after 30 years. In plain terms, a 475W panel should still be producing around 422W three decades from the day it goes up.
Both of these sit on top of two other things. Your rights under Australian Consumer Law apply no matter what any manufacturer’s warranty says. And Perth Solar Warehouse’s own workmanship warranty covers the install itself. A panel is only ever as good as the hands that put it on the roof, which is the part a manufacturer warranty can’t cover for you.
LONGi competes at the quality-value intersection. They’re not the cheapest or the most expensive panels available in Perth. Their strength is delivering HPBC 2.0 cell technology (a genuine performance advantage over TOPCon panels) at a price point that competes similarly with most N-type TOPCon competitors.
The trade-off is cell architecture philosophy. Most of the industry has moved to N-type TOPCon as the baseline quality standard. LONGi has bet on HPBC.2.0 (which uses N-type wafers) as an alternative path to high efficiency. Both approaches achieve similar real-world results in Perth’s climate. LONGi’s HPBC 2.0 panels match or exceed the temperature coefficient, efficiency, and degradation rates of mainstream TOPCon panels. The debate between the two technologies is more relevant to manufacturers than to homeowners.
What should matter to you: the panel’s efficiency, its warranty terms, its temperature performance in WA conditions, and whether the manufacturer will still be around in 15 years. LONGi ticks every box.
Most Perth homes claim the federal STC discount when they install LONGi solar panels. Perth sits in STC Zone 3, which sets how many certificates a system is worth. The value of an STC moves with the market, so treat any dollar figure you see as a guide rather than a fixed number, and ask for it to be itemised on your quote. PSW always itemises the panel cost and the STC discount separately so you can see exactly what’s being applied to the price.
Is LONGi a Tier-1 solar panel manufacturer?
Yes. LONGi consistently appears on Bloomberg NEF’s Tier 1 module maker list and holds the only AAA bankability rating from PV ModuleTech. Tier 1 status reflects manufacturing scale and financial stability, not a quality grade, but LONGi’s independent testing results and bankability rating provide the quality signal Tier 1 doesn’t.
Are LONGi panels good for Perth's heat?
Yes. The X10’s -0.26%/°C temperature coefficient means it maintains a higher output as the roof heats up than older panels did. On a 40°C-plus day, that’s real generation you’d otherwise lose.
Where are LONGi solar panels manufactured?
LONGi operates manufacturing facilities across China (eight provinces), Malaysia (Kuching), and Vietnam. Panels sold in Australia are most commonly manufactured in China or Malaysia. The manufacturing origin doesn’t affect warranty coverage in Australia.
Is HPBC better than TOPCon?
They’re different approaches to the same goal: higher efficiency and better real-world performance. HPBC 2.0 uses N-type silicon with back contacts and achieves efficiencies similar to or better than those of most TOPCon panels at a lower manufacturing cost. For homeowners, the practical performance in Perth’s climate is comparable. Choose based on warranty terms, pricing, and your installer’s recommendation rather than cell technology alone.
Single glass or dual-glass black?
Electrically, they’re the same 475W panel. Go single glass for most roofs. Choose the dual-glass black version if the array faces the street or you’re near the coast, where the full-black look and the tougher glass-glass build both earn their keep.
The LONGi X10 is a strong, fairly priced panel that handles Perth heat well and comes from a manufacturer big enough to stand behind a long warranty. The single-glass model suits most homes. Step up to the dual-glass black version if the array faces the street or you’re near the coast.
Want us to spec the right LONGi panel for your roof and your budget? Get a quote, and we’ll size it properly, with the exact model and warranty in writing.
