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Q-SUN Solar Brand review

QN-415HT-1

415 Wp PERC
ComparePV verdict

Efficiency leader, no clear weak spot

Rank 11,375 of 14,005
Compare panels Datasheet PDF
Power (Wp)
415
Typical for its class
Efficiency (%)
21.30
Strong · top 8%
Density (Wp/m²)
212.5
Strong · top 11%
Temp (%/°C)
-0.340
Strong · top 24%
Weight (kg)
21.0
Strong · 1.0 kg below median
Warranty (yrs)
25
Typical · median 25 yrs

The Q-SUN Solar Crystal P8 Full Black Monocrystalline (P type 405-420W) series is designed for installations where both aesthetics and stable performance under real roof conditions are important. These are full black modules with a black frame that aesthetically complete the building's structure and better integrate into modern designs, particularly where the investor does not accept the contrast of bright elements on the roof.

The use of monocrystalline P-type cells ensures predictable performance and good parameter repeatability throughout the string, which makes it easier to select an inverter and reduces the risk of "bottleneck" issues when expanding the installation. The 108-cell layout is ideal for typical residential and small commercial roofs.

Crystal P8 also emphasizes safe operation thanks to a well-designed construction with a sealed junction box and components designed for outdoor use. This is a good choice for those who want to combine high aesthetics with practical reliability, without overpaying for technologies they don't need.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.30% 20.60% Strong · top 8% 8,519
Power density 212.5 206.2 Strong · top 11% 8,791
Temperature coefficient -0.340 -0.350 Strong · top 24% 8,778
Weight per kWp 50.6 53.0 Strong · top 24% 4,021
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

8 positive · 3 caution
Best for

Residential and commercial.

Strengths
21.30% module efficiency

Top 8% of the PERC 400-450 W segment, against a median of 20.60%. Ranked 8,519th in the whole database.

212.5 watts per square metre

Top 11% of the PERC 400-450 W segment, against a median of 206.2.

-0.340 %/°C temperature coefficient

Top 24% of the PERC 400-450 W segment, against a median of -0.350.

What owners get
Full Black aesthetic without compromise

Black frame and black cell backsheet provide a uniform, premium look for the installation - a key advantage for projects where the investor won't accept contrast from light-colored components on the roof, without the typical premium-segment price markup.

Competitive 20.7-21.5% efficiency

Module efficiency sits in the upper range of the PERC segment and matches direct competitors - GCL-M10/54H (21.5%) and RedSolar P series M10-PERC Ultralight (21.52%) - at a comparable maximum power of 420 Wp.

Solid 12/25-year warranty

12 years of product warranty and 25 years of linear power warranty is an industry standard that supports predictable ROI, consistent with typical financing terms for PV installations in the residential and small commercial segment.

Predictable P-type cell performance

Monocrystalline P-type cells in a 108-cell layout provide good parameter consistency across the string, easing inverter selection and reducing mismatch risk in typical single-family home installations.

Refined build for outdoor operation

A sealed junction box and outdoor-rated components improve moisture resistance and durability under variable weather conditions, translating into lower failure risk over the operating lifecycle.

Trade-offs
PERC technology, not N-type

The series relies on older PERC technology, while competitors (e.g., Jinko Solar JS-PERC SERIES reaches 21.7% efficiency) and the market overall are shifting toward TOPCon/N-type with lower LID degradation and better high-temperature performance - Crystal P8 doesn't offer this advantage.

Manufacturer not on Tier-1 BNEF list

Q-SUN Solar (founded in 2014) does not appear on Bloomberg New Energy Finance's Tier-1 manufacturer list, which can complicate bank financing for larger commercial installations that require a bankable module supplier.

Efficiency below segment leader

Maximum efficiency of 21.5% is lower than Jinko Solar JS-PERC SERIES (21.7%) and RedSolar P series (21.52%) - at the same 420 Wp max power, the series lands mid-pack rather than at the top among comparable PERC modules.

Notes from the database
  • Efficiency of 21.3% is 0.7pp above the PERC 400-450W median (20.6%)
  • 212.5 W/m² power density - 6.3 W/m² more than PERC 400-450W median (206.2 W/m²), more power per roof area
  • At -0.34%/°C, hot weather performance is typical for PERC 400-450W panels
  • At 21.0 kg, weight matches the PERC 400-450W median
  • #8519 for efficiency, #8778 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 415 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.30 % Strong Segment median 20.60%
Vmpp · Impp 31.90 V · 13.01 A Operating point at max power
Voc · Isc 37.99 V · 13.72 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1134×30 mm · 1.95 m² of roof
Weight 21.0 kg Strong Strong · 1.0 kg below median
Cells 108 · PERC Monocrystalline
Coefficient Pmax -0.340 %/°C Strong top 24% of its segment
Coefficient Voc · Isc -0.250 · 0.040 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 84.8 % Equals 341 W guaranteed
Degradation 2.00 → 0.55 % First year, then annual

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.340 %/°C against a segment median of -0.350
-

Alternatives

All Q-SUN Solar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Q-SUN Solar QN-415HT-1 415 W 21.30% -0.340 21.0 kg You are here
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +50 W, +2.5 pp, +5 yr warranty
LX-465M/182R-96+ GG 465 W 23.80% -0.260 23.5 kg +50 W, cooler, +2.5 pp
AIKO-A460-MAH54Mb 460 W 23.60% -0.290 20.5 kg Cooler, +2.3 pp, +5 yr warranty
LX-465M/182R188-108+ GG 465 W 23.60% -0.290 24.5 kg +50 W, cooler, +2.3 pp
JST-EDMH-(445-465)W-TD (460W class) 460 W 23.56% -0.300 20.5 kg +45 W, +2.3 pp, +5 yr warranty
LX-460M/182R-96+ GG 460 W 23.55% -0.260 23.5 kg Cooler, +2.2 pp, +5 yr warranty
PS-MNB108(HCBF)-460W 460 W 23.53% -0.290 20.5 kg Cooler, +2.2 pp, +5 yr warranty
JAT54S40-460/LR 460 W 23.50% -0.260 19.3 kg Cooler, +2.2 pp, +5 yr warranty
QNM182-HS395-54 395 W 20.20% -0.320 20.8 kg -20 W, cooler, -1.1 pp
QNM182-HS400-54 400 W 20.50% -0.320 20.8 kg -15 W, cooler, -0.8 pp
QNM182-HS405-54 405 W 20.70% -0.320 20.8 kg -10 W, cooler, -0.6 pp
QNM182-HS410-54 410 W 21.00% -0.320 20.8 kg Cooler, -0.3 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +95 W, cooler, +3.7 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +80 W, cooler, +3.5 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +90 W, cooler, +3.4 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +75 W, cooler, +3.2 pp

Found 1783 panels of the same or similar size to this one, within ±10 mm. See them here Found 1914 panels of the same or similar size to this one, within ±25 mm. See them here Found 3392 panels of the same or similar size to this one, within ±50 mm. See them here Found 3970 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty does the Q-SUN Solar Crystal P8 Full Black series carry and what does it cover?
The Crystal P8 series comes with a 12-year product warranty covering manufacturing defects and material failures, plus a 25-year linear power warranty guaranteeing at least 80–84% of rated output at end of life. This is the standard commitment for premium PERC modules and allows system owners to model returns over a full two-decade horizon with confidence.
Does the full black design of the Crystal P8 hurt panel efficiency — can the black frame and backsheet cause overheating?
Black frames and a black backsheet absorb slightly more solar radiation than standard white components, which can raise the module's operating temperature by a few degrees Celsius. In real-world terms this causes a marginal output loss of roughly 1–2% annually. For most homeowners the aesthetic benefit of a seamless roofline far outweighs this negligible energy trade-off.
Is the 108-cell layout of the Crystal P8 an advantage when designing a system on a typical residential roof?
Yes. A 108-cell format produces a more compact module footprint that fits more easily on limited or irregular roof surfaces. Compared to 120- or 132-cell panels, fewer cells mean a lower open-circuit voltage (Voc), simplifying inverter string sizing and often eliminating the need for power optimizers in straightforward residential configurations.
What does PERC technology in the Crystal P8 deliver over older mono cells — does it matter on overcast days?
PERC (Passivated Emitter and Rear Cell) adds a passivation layer on the rear surface that reflects unused photons back into the active silicon, boosting conversion efficiency. The benefit shows up both at peak irradiance and under diffuse light conditions common in northern European climates during autumn and winter. Combined with a monocrystalline P-type wafer, Crystal P8 delivers consistent, predictable annual yield.
Why is the Crystal P8 420W a monofacial module — is there a reason bifacial was skipped?
Crystal P8 is a monofacial module. Bifacial panels harvest reflected light from the surface beneath them, but require high-albedo ground (white gravel, concrete, snow) and sufficient clearance from the roof deck to produce meaningful additional yield. On a typical dark-colored pitched roof the bifacial gain drops to near zero while the module cost remains higher. Crystal P8 is therefore the more practical and cost-efficient choice for standard rooftop installations.
Is Q-SUN Solar a Tier 1 manufacturer and how does that affect the purchase decision for Crystal P8 panels?
Q-SUN Solar does not currently appear on Tier 1 lists published by BloombergNEF, meaning it has not received a bankability rating assigned to the largest global manufacturers. This does not necessarily reflect module quality, but buyers should verify whether the distributor offers an insurance-backed warranty — a third-party policy that protects the 25-year power guarantee against the manufacturer's potential insolvency.
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