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Q-SUN Solar QN-435HD-1
Q-SUN Solar Brand review

QN-435HD-1

435 Wp N-type Bifacial
ComparePV verdict

Middle of its segment, heavy for its output

Rank 7,740 of 14,005
Compare panels Datasheet PDF
Power (Wp)
435
Typical for its class
Efficiency (%)
21.80
Typical · median 21.91%
Density (Wp/m²)
217.7
Typical · median 218.3
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
25.0
Weak · 3.0 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The Q-SUN Solar Qrystal N8 series is designed to maximize energy yield in situations where every square meter of roof or land matters. The modules utilize N-type cells and TOPCon technology, ensuring stable performance in varying weather conditions and improved resistance to typical degradation over time. This translates to more predictable energy production and a more cost-effective installation over a longer period.

A key feature of the series is the bifacial design in certain variants - allowing for the recovery of additional energy from reflected light, which is particularly effective on bright roof surfaces, membranes, and ground-mounted installations. The Qrystal N8 is a good choice for residential, commercial, and industrial installations where you need high power density and reliable performance in cold, hot, and partially shaded conditions. Compared to the competition, the series offers a significant advantage due to its combination of long power warranty and technology that realistically limits performance degradation over time.

Ranking

321 panels in the segment N-type 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.80% 21.91% Typical 7,022
Power density 217.7 218.3 Typical 7,066
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 57.5 51.2 Weak · bottom 8% 11,230
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 5 caution
Best for

Residential and commercial.

Not ideal for

Weight-limited structures.

Watch-outs
57.5 kg per kWp

Bottom 8% of the N-type 400-450 W segment, against a median of 51.2. Ranked 11,230th in the whole database.

What owners get
N-type TOPCon cells

N-type TOPCon technology delivers lower LID/LeTID degradation and a better temperature coefficient than older PERC cells, resulting in more stable energy output on hot days and less power loss during the early years of operation.

Bifacial design

The dual-glass bifacial construction captures additional albedo energy from the rear side of the module - depending on the mounting surface (light-colored roof, membrane, ground mount), this can boost total yield by a meaningful margin compared to an equivalent monofacial module.

30-year power warranty

The manufacturer offers a uniform, linear 30-year power warranty (min=max), matching the best offers on the market and exceeding the standard 25-year power warranties offered by most Tier-1 competitors.

High efficiency up to 22.5%

Efficiency reaching 22.5% clearly outperforms thin-film modules such as First Solar Series 6 Plus (~19% at the same max power of 480 W), meaning less roof or ground area is needed to reach the same installed capacity.

Broad 430-480 Wp power range

10 power variants spanning 430-480 Wp provide flexibility to match modules to specific projects - from residential to commercial installations - without switching product series.

Trade-offs
No BNEF Tier 1 status

Q-SUN Solar does not appear on the BNEF Tier 1 bankable module manufacturer list, which may complicate bank financing for larger commercial projects where lenders often require Tier-1 modules.

Efficiency below segment leader

Peak efficiency of 22.5% is about 1.5 pp lower than the competing Gamko New Energy GKA96N-PRO series (24.02% at the same max power of 480 W), placing Qrystal N8 mid-pack rather than at the top of the N-type segment.

Inconsistent product warranty

The lower bound of the product warranty is just 15 years (depending on variant), 10 years short of the 25-year standard offered by many Tier-1 competitors - buyers should verify which specific variant carries the shorter coverage.

Limited manufacturer track record

Q-SUN Solar was founded in 2014, and the Qrystal N8 series itself launched in 2023 - a relatively short market history compared to established Tier-1 manufacturers means less long-term field reliability data is available.

Notes from the database
  • Efficiency of 21.8% matches the N-type 400-450W median
  • Power density of 217.7 W/m² matches the N-type 400-450W median
  • Temperature coefficient of -0.29%/°C matches the N-type 400-450W median
  • Weight of 25.0 kg is 3.0 kg above N-type 400-450W median (22.0 kg) - verify structural support
  • In the top 50% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 435 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.80 % Typical Segment median 21.91%
Vmpp · Impp 33.34 V · 13.04 A Operating point at max power
Voc · Isc 39.75 V · 13.58 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1762×1134×30 mm · 2.00 m² of roof
Weight 25.0 kg Weak Weak · 3.0 kg above median
Cells 108 · N-type Monocrystalline
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.240 · 0.040 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 380 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Q-SUN Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 435 Wp appear here. The rest cover the whole series.

Power-Voltage Curve Power-Voltage Curve Whole series Current-Voltage Curve Current-Voltage Curve Whole series Guaranteed Power over 30 Years Guaranteed Power over 30 Years Whole series

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
-0.290 %/°C against a segment median of -0.290
-

Alternatives

All Q-SUN Solar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Q-SUN Solar QN-435HD-1 435 W 21.80% -0.290 25.0 kg You are here
JAT54S40-485/LR 485 W 24.30% -0.260 19.3 kg +50 W, lighter, +2.5 pp
AIKO-A485-MCE54Mw 485 W 24.30% -0.260 21.0 kg +50 W, lighter, +2.5 pp
AIKO-A485-MAH54Mw 485 W 24.30% -0.260 21.5 kg +50 W, lighter, +2.5 pp
GK-5-54HG-485M 485 W 24.30% -0.260 21.0 kg +50 W, lighter, +2.5 pp
ZEUS 3.0+ 108 485WP 485 W 24.30% -0.260 24.2 kg +50 W, cooler, +2.5 pp
QN-430HT-5 430 W 21.50% -0.290 25.0 kg -0.3 pp
QN-440HT-5 440 W 22.00% -0.290 25.0 kg Very close match
QN-445HT-5 445 W 22.30% -0.290 25.0 kg +10 W, +0.5 pp
QN-450HT-5 450 W 22.50% -0.290 25.0 kg +15 W, +0.7 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +75 W, cooler, +3.2 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +60 W, lighter, +3.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +70 W, cooler, +2.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +55 W, lighter, +2.7 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +65 W, cooler, +2.7 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +65 W, lighter, +2.7 pp

Found 1395 panels of the same or similar size to this one, within ±10 mm. See them here Found 1425 panels of the same or similar size to this one, within ±25 mm. See them here Found 3614 panels of the same or similar size to this one, within ±50 mm. See them here Found 3962 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty comes with the Q-SUN Solar Qrystal N8 solar panels?
The Qrystal N8 series includes a 25-year product warranty covering material and manufacturing defects, plus a 30-year linear power output warranty — among the longest available on the market. The extended power guarantee allows for more accurate LCOE projections and gives homeowners and commercial investors greater confidence in the system's long-term financial performance.
What is TOPCon technology used in the Qrystal N8 and is it worth the premium?
TOPCon (Tunnel Oxide Passivated Contact) is an advanced N-type silicon cell technology used across the Qrystal N8 lineup. Compared to conventional PERC cells, TOPCon achieves higher conversion efficiency and lower long-term degradation rates. In real-world terms, this means more energy harvested from the same roof area and a more stable output curve over the panel's lifespan — directly improving the return on investment.
Are the bifacial Qrystal N8 variants worth it on a pitched roof with dark tiles?
Bifacial Qrystal N8 modules deliver the greatest benefit where the rear side can capture reflected irradiance — ground-mount systems with a light-colored albedo surface, flat roofs with white membranes, or bright gravel substrates. On a standard pitched roof with dark tiles, the bifacial gain is marginal and rarely justifies the added cost. Ground-mount or flat-roof installations with a reflective surface are where this variant truly pays off.
What is the maximum power output of the Qrystal N8 and how many panels do I need for a home system?
Qrystal N8 modules are rated up to 480 Wp, placing them in the high power-density segment. For a typical 10 kWp residential system, you would need roughly 21 panels from this series, compared to 26 or more with older 350–380 Wp modules. Fewer panels also means reduced BoS costs — less racking, wiring, and labor time on the roof.
How do the Qrystal N8 panels perform in high temperatures and on overcast days?
The N-type TOPCon cells in the Qrystal N8 have a more favorable temperature coefficient than standard PERC cells, so they lose less power during hot summer days. They also respond well to diffuse irradiance, generating relatively more energy under cloudy or hazy conditions than older cell technologies. Both factors contribute to a higher annual energy yield over the system's lifetime.
Is Q-SUN Solar a Tier 1 manufacturer, and does that affect my decision to buy the Qrystal N8?
Q-SUN Solar is not currently listed as a Tier 1 manufacturer by financial agencies such as Bloomberg NEF. It is important to understand that Tier 1 is a bankability rating based on a manufacturer's financial standing, not a technical quality benchmark. When evaluating the Qrystal N8, focus on the module specifications, the 25-year product and 30-year power warranties, and the availability of local after-sales service to ensure the warranty can be enforced if needed.
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