--- title: "Q-SUN Solar QNM182-HS555-72 555W Solar Panel - Specs & Review | ComparePV" description: "Q-SUN Solar QNM182-HS555-72 555W solar panel. Specs: 21.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/q-solar-limited-qnsolar-qnm182-hs555-72" updated: 2026-09-11 --- # Q-SUN Solar QNM182-HS555-72 Strong in heat, short guarantee 589 panels in the segment PERC 550-600 W ## Identity - **Manufacturer:** Q-SUN Solar - **Model:** QNM182-HS555-72 - **Series:** QNM182-HS-72 (535–555W) - **Rated power:** 555 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 550-600 W (589 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 555 W | 560 W | Typical | | | Module efficiency | 21.50% | 21.29% | Strong - top 18% | 7,958 | | Power density | 214.8 | 212.9 | Typical | 8,148 | | Temperature coefficient | -0.320 | -0.350 | Strong - top 3% | 8,312 | | Weight (kg) | 28.3 kg | 30.8 kg | Typical | | | Performance warranty | 25 yrs | 27 yrs | Weak - bottom 24% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.50% | 21.29% | Strong - top 18% | 7,958 | | Power density | 214.8 | 212.9 | Typical | 8,148 | | Temperature coefficient | -0.320 | -0.350 | Strong - top 3% | 8,312 | | Weight per kWp | 51.0 | 52.7 | Typical | 4,351 | | Performance warranty | 25 yrs | 27 yrs | Weak - bottom 24% | 9,798 | ### Strengths - **-0.320 %/°C temperature coefficient** - Top 3% of the PERC 550-600 W segment, against a median of -0.350. Ranked 8,312th in the whole database. - **21.50% module efficiency** - Top 18% of the PERC 550-600 W segment, against a median of 21.29%. ### Watch out for - **25 year performance warranty** - Bottom 24% of the PERC 550-600 W segment, against a median of 27 yrs. - **Best for:** Hot roofs and southern climates and small roofs that need every watt. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 555 W - **Efficiency:** 21.50 % - **Voltage at Pmax (Vmp):** 42.31 V - **Current at Pmax (Imp):** 13.12 A - **Open-circuit voltage (Voc):** 49.90 V - **Short-circuit current (Isc):** 13.84 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.320 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.052 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 ### Physical - **Length:** 2279 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 28.3 kg - **Area:** 2.58 m2 - **Power density:** 214.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 455 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7958 of 14005 | | Power density | 8148 of 14005 | | Temperature coefficient | 8312 of 14005 | | Weight | 4351 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Competitive efficiency up to 21.5%** - The top efficiency of 21.5% matches JA Solar DEEP BLUE 3.0 (21.5%) and exceeds ET Solar Elite PLUS (21.4%) and Boviet VEGA (21.3%) at the same 555W max power, confirming the competitiveness of the M10 wafer technology in the QNM182-HS-72 series. - **Half-cut and multi-busbar reduce losses** - Half-cut cell technology lowers resistive losses and improves partial-shading resistance, while the multi-busbar (MBB) system shortens electron flow paths and prevents microcracks - features standard among top-tier series and here applied by a non-tier-1 manufacturer as well. - **High unit power of 535-555W** - The power range up to 555W per module reduces the number of panels, mounting structures, DC cabling, and optimizers needed for a given system size, directly lowering CAPEX on commercial and utility-scale solar farm projects. - **PID and mechanical load resistance** - Stated high resistance to potential-induced degradation (PID) plus durability against snow and wind loads improve yield stability under harsh climate conditions and reduce the risk of premature power loss. - **Standard 12/25-year warranty** - The 12-year product warranty and 25-year power warranty align with the market standard for the PERC/M10 segment, offering comparable service conditions to peer offerings. ## Cons - **Manufacturer not on BNEF Tier 1 list** - Q-SUN Solar (founded 2014) does not appear on the current BloombergNEF Tier 1 list (Q1-Q3 2026), unlike JA Solar which has been included for years - this may complicate project financing (bankability) for utility-scale installations requiring tier-1 status. - **PERC technology lags N-type competitors** - The series relies on older PERC technology, while the premium 535-555W segment increasingly adopts N-type cells (TOPCon/HJT) with lower LID degradation and better temperature performance, potentially resulting in lower real-world yield over time versus newer-cell competitors. - **No bifacial variant available** - The QNM182-HS-72 series is monofacial only, while comparable tier-1 lines often offer bifacial variants that boost yield by 5-15% in ground-mount installations with suitable albedo, limiting flexibility for utility-scale solar farm applications. ## About this series The Q-SUN Solar QNM182-HS-72 (535-555W) solar panel series uses advanced monocrystalline cells based on M10 wafers, which allows for high power density while maintaining optimal dimensions. The use of **Half-Cut** technology ensures that the modules feature reduced resistive losses and significantly higher resistance to partial shading effects, which is crucial for yield stability in large-scale installations. Thanks to the implementation of the **Multi-Busbar (MBB)** system, the design effectively prevents micro-cracks and shortens the electron flow path, which directly increases the efficiency of the entire system. Products from this line are primarily dedicated to commercial investments and solar farm construction, where minimizing the LCOE indicator is a priority. High unit power reduces expenses on mounting infrastructure and fastening systems. A key distinguishing feature is **high resistance to potential-induced degradation (PID)** and a solid construction that withstands significant snow and wind loads. This solution represents a **perfect balance between price and performance**, eliminating issues related to the low efficiency of older technologies. By choosing the QNM182-HS-72 series, investors receive equipment adapted for intensive operation in diverse climatic conditions, which guarantees a **quick return on investment** and long-term energy reliability for the system. ## Notable figures - At 21.5% efficiency, this panel is on par with typical \*\*PERC 550-600W\*\* modules - Power density of 214.8 W/m² matches the \*\*PERC 550-600W\*\* median - -0.32%/°C temperature coefficient (median: -0.35%/°C) - retains ~1% more power at high temperatures - Weight of 28.3 kg (2.5 kg below \*\*PERC 550-600W\*\* median of 30.8 kg) allows easier transport and roof mounting - In the top 57% for efficiency among all PERC panels ## Questions ### What warranty does Q-SUN Solar offer on the QNM182-HS-72 series? The manufacturer provides a 12-year product warranty and a 25-year linear power output warranty. After 25 years, each panel should retain at least 80.7% of its rated power. It is worth noting that Q-SUN Solar is not listed among Tier 1 manufacturers — buyers of larger orders are advised to verify the company's financial stability and warranty fulfillment procedures before committing to a purchase. ### How well does the Q-SUN QNM182-HS-72 series handle partial shading? Very well. The half-cut PERC cell design splits each cell in two, reducing shading-related losses by several percentage points compared to full-size cells. The Multi-Busbar (MBB) layout further shortens the current path and lowers internal resistance. As a result, the array maintains higher energy output even when a portion of the modules is shaded by a building, chimney, or vegetation. ### Is the QNM182-HS-72 series suitable for residential rooftop installation? The QNM182-HS-72 (535–555 W) is engineered for large-scale commercial projects and utility-scale solar farms, not for typical residential rooftops. The large M10-wafer module dimensions and high unit power output make handling and mounting on sloped residential roofs more difficult. For prosumer systems, smaller panels in the 400–430 W range designed for the residential segment are a much better fit. ### What is PID resistance and are the QNM182-HS-72 panels susceptible to it? PID (Potential Induced Degradation) occurs when leakage currents between cells and the module frame cause irreversible performance loss under high system voltages. The QNM182-HS-72 uses PERC cells with optimized encapsulation and anti-reflective coating to deliver high PID resistance. This is especially critical in utility-scale solar farms where DC string voltages can exceed 1000 V, making PID risk considerably higher than in small residential systems. ### Is the QNM182-HS-72 a bifacial panel, and does that affect its performance? No, the QNM182-HS-72 is a monofacial module — it generates electricity only from the front side and does not harvest albedo light reflected from the ground. It should not be confused with bifacial panels. The monofacial design keeps per-module costs lower and simplifies system engineering. If additional bifacial gain is a priority for a specific project (e.g., white gravel or snow surfaces), a different bifacial series should be considered. ### How many QNM182-HS-72 (555 W) panels are needed to build a 1 MW solar farm? At a rated output of 555 W per module, a 1 MW farm requires approximately 1,802 panels (1,000,000 W ÷ 555 W ≈ 1,802 units). In practice, a 3–5% reserve is added to cover system losses and module mismatch, bringing the real count to roughly 1,850–1,890 panels. The high unit power of this series directly reduces expenditure on mounting structures, cabling, and land area per installed megawatt. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/QNM182-HS535-555W-72-compressed-4-1-1-ac2ad409623f.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, +3.5 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, +3.3 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | -50 W, cooler, +3.2 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, +3.1 pp, +5 yr warranty | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, lighter, +2.9 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | Cooler, +2.9 pp, +5 yr warranty | | [Q-SUN Solar QNM182-HG530-72](https://comparepv.com/panel/qn-solar-pv-limited-qnm182-hg530-72) | 530 W | Heavier, -1.0 pp, +5 yr warranty | | [Q-SUN Solar QNM182-HS535-72](https://comparepv.com/panel/q-solar-limited-qnsolar-qnm182-hs535-72) | 535 W | -20 W, -0.8 pp | | [Q-SUN Solar QNM182-HS540-72](https://comparepv.com/panel/q-solar-limited-qnsolar-qnm182-hs540-72) | 540 W | -15 W, -0.6 pp | | [Q-SUN Solar QN-540HT](https://comparepv.com/panel/q-sun-solar-qn-540ht) | 540 W | Hotter, lighter, -0.7 pp | | [Q-SUN Solar QNM182-HS545-72](https://comparepv.com/panel/q-solar-limited-qnsolar-qnm182-hs545-72) | 545 W | -10 W, -0.4 pp | | [Q-SUN Solar QN-545HT](https://comparepv.com/panel/q-sun-solar-qn-545ht) | 545 W | Hotter, lighter, -0.4 pp | | [Q-SUN Solar QNM182-HS550-72](https://comparepv.com/panel/q-solar-limited-qnsolar-qnm182-hs550-72) | 550 W | Very close match | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +90 W, cooler, +3.5 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +85 W, cooler, +3.3 pp | --- Source: https://comparepv.com/panel/q-solar-limited-qnsolar-qnm182-hs555-72 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.