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Sunket New Energy Brand review

SKT420M10-108D4

420 Wp TOPCon Bifacial 3000%
ComparePV verdict

Middle of its segment, modest efficiency

Rank 10,261 of 14,005
Compare panels Datasheet PDF
Power (Wp)
420
Weak · bottom 16%
Efficiency (%)
21.50
Weak · bottom 17%
Density (Wp/m²)
215.1
Weak · bottom 19%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
23.4
Typical · median 22.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Sunket New Energy SKT415-435M10-108D4 series consists of advanced modules utilizing N-type TOPCon technology, which currently represents the peak of efficiency in commercial photovoltaics. Thanks to the Double Glass construction, these panels are characterized by exceptional resistance to degradation caused by atmospheric factors and significantly higher mechanical strength compared to classic solutions. A key innovation is bifaciality, allowing for the generation of additional energy from the rear side of the cells by effectively utilizing light reflected from the ground. This solves the problem of limited mounting surface, maximizing yields from every square meter of the installation. This series is dedicated to investors seeking uncompromising longevity, as N-type cell technology almost completely eliminates the LID effect, ensuring stable power for decades. Compared to standard older-generation modules, the Sunket product offers a significantly better temperature coefficient, which translates into high performance even on hot summer days. It is an ideal choice for modern home micro-installations and professional farms where the lowest levelized cost of energy matters. The use of M10 Half-Cut cells effectively reduces internal losses and minimizes the risk of hot spots, placing this series at the forefront of the safest and most profitable renewable energy solutions currently available on the Polish market.

Ranking

1,218 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.50% 22.00% Weak · bottom 17% 7,958
Power density 215.1 220.2 Weak · bottom 19% 7,882
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 55.7 51.4 Typical 10,113
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 2 caution
Best for

Residential, commercial, shaded-installations and hot-climate.

Not ideal for

Tight roof space and roofs where every square metre has to count.

Watch-outs
21.50% module efficiency

Bottom 17% of the TOPCon 400-450 W segment, against a median of 22.00%.

215.1 watts per square metre

Bottom 19% of the TOPCon 400-450 W segment, against a median of 220.2.

Notes from the database
  • Efficiency of 21.5% matches the TOPCon 400-450W median
  • At 215.1 W/m², this panel generates 5.1 W/m² less per unit area than TOPCon 400-450W median (220.2 W/m²)
  • At -0.29%/°C, hot weather performance is typical for TOPCon 400-450W panels
  • Weight of 23.4 kg is 1.4 kg above TOPCon 400-450W median (22.0 kg) - verify structural support
  • Ranked #7958 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 420 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.50 % Weak Segment median 22.00%
Vmpp · Impp 31.52 V · 13.33 A Operating point at max power
Voc · Isc 38.11 V · 14.07 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 23.4 kg Typical Typical · median 22.0 kg
Cells 108 · TOPCon Monocrystalline
Bifaciality 3000 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 367 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Sunket New Energy in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 420 Wp appear here. The rest cover the whole series.

Sunket TOPCon Linear Warranty Sunket TOPCon Linear Warranty 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
-
With bifacial gain
-

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
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Sunket New Energy SKT420M10-108D4 420 W 21.50% -0.290 23.4 kg You are here
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +45 W, lighter, +2.3 pp
LX-465M/182R-96+ GG 465 W 23.80% -0.260 23.5 kg +45 W, cooler, +2.3 pp
SPR-MAX7-470 470 W 23.70% -0.270 21.1 kg +50 W, +2.2 pp, +10 yr warranty
AIKO-A470-MAH54Mb 470 W 23.60% -0.260 21.5 kg +50 W, cooler, +2.1 pp
AIKO-A460-MAH54Mb 460 W 23.60% -0.290 20.5 kg +40 W, lighter, +2.1 pp
HSM-BD54-LA470 470 W 23.60% -0.260 21.5 kg +50 W, cooler, +2.1 pp
SKT345M10 345 W 17.70% -0.290 20.5 kg -75 W, -3.8 pp, -5 yr warranty
SKT350M10 350 W 17.90% -0.290 20.5 kg -70 W, -3.6 pp, -5 yr warranty
SKT355M10 355 W 18.20% -0.290 20.5 kg -65 W, -3.3 pp, -5 yr warranty
SKT360M10 360 W 18.40% -0.290 20.5 kg -60 W, -3.1 pp, -5 yr warranty
SKT365M10 365 W 18.70% -0.290 20.5 kg -55 W, -2.8 pp, -5 yr warranty
SKT385M10 385 W 19.80% -0.350 23.4 kg -35 W, hotter, -1.7 pp
SKT390M10 390 W 20.00% -0.350 23.4 kg -30 W, hotter, -1.5 pp
SKT395M10 395 W 20.20% -0.350 23.4 kg -25 W, hotter, -1.3 pp
SKT400M10 400 W 20.50% -0.350 23.4 kg -20 W, hotter, -1.0 pp
SKT405M10 405 W 20.80% -0.350 23.4 kg -15 W, hotter, -0.7 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +90 W, cooler, +3.5 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 comes with the Sunket SKT415-435M10-108D4 solar panels?
The SKT415-435M10-108D4 series carries a 15-year product warranty covering manufacturing defects and materials, plus a 30-year linear power warranty guaranteeing at least 87.4% of rated output at the end of the warranty period. This is among the longer power-warranty terms currently on the market and reflects the manufacturer's confidence in the long-term stability of N-type TOPCon cell technology.
What benefit does bifacial technology offer in the Sunket SKT435M10-108D4, and is it worth the premium?
Bifacial design lets the rear glass surface generate additional electricity by capturing albedo light reflected from the ground or rooftop membrane. Depending on surface reflectivity (white membrane, gravel, snow), real-world energy yield can increase by 5-15% with no extra mounting area required. The Double Glass construction also provides superior protection against moisture ingress and PID degradation, extending the module's effective service life.
Are the Sunket SKT415-435M10-108D4 panels suitable for a pitched residential roof?
Yes. The modules measure 1722×1134×30 mm and weigh approximately 21 kg, which is well within standard residential rooftop installation parameters. The 108-cell M10 half-cut configuration reduces output losses under partial shading from chimneys or roof windows, and the double-glass frame provides excellent mechanical resistance to snow and wind loads commonly specified in European installation standards.
How do the Sunket SKT435M10-108D4 panels perform during summer heatwaves?
The series carries a temperature coefficient of Pmax of -0.29%/°C, which means smaller power losses at elevated cell temperatures compared to standard PERC modules (typically -0.34 to -0.35%/°C). At a module operating temperature of 60°C, this Sunket series loses approximately 10.2% of rated power, while an equivalent PERC panel would lose 12-12.5%, translating to meaningfully higher summer yields and a lower LCOE over the system's lifetime.
How does TOPCon technology in the Sunket SKT415-435M10-108D4 compare to older PERC cells?
N-type TOPCon cells feature a tunnel oxide passivation layer that virtually eliminates Light-Induced Degradation (LID), the main cause of early-year power loss in PERC modules. This results in higher module efficiency — up to 22.27% for this series versus roughly 20-21% for typical PERC — and more stable long-term output across the full 30-year power warranty period, which directly lowers the LCOE of any system built with these modules.
What is the peak module efficiency of the Sunket SKT415-435M10-108D4 and what drives it?
The top variant in the series, the 435 Wp panel, achieves a module efficiency of up to 22.27%. Key contributors are the N-type TOPCon cell architecture, the M10 half-cut cell format that reduces internal resistive losses, and 16-busbar metallization that improves current collection across each cell. In practical terms, this higher efficiency means the same system capacity occupies less roof area than installations built with older-generation panels.
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