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SunKean Brand review

SKT420M10-108S1

420 Wp TOPCon
ComparePV verdict

Middle of its segment, short guarantee

Rank 11,136 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)
20.5
Typical · median 22.0 kg
Warranty (yrs)
25
Weak · bottom 7%

The SunKean SKT415-435M10-108S1 series comprises modules featuring monocrystalline N-type TOPCon cells, designed for high energy production even under less-than-ideal conditions. The use of N-type TOPCon results in very low LID and LETID degradation, helping to maintain stable performance over the long term. The half-cut configuration with 108 cells minimizes internal losses and improves performance under partial shading, making it particularly suitable for roof installations with skylights, chimneys, or variable exposure.

The 16BB multi-busbar architecture also supports better current collection and higher resistance to micro-cracks during transport and installation. An additional advantage is the anti-reflective glass, which improves light utilization in low-sunlight conditions.

This is a good choice for residential and commercial installations where reliable performance, predictable yields, and modern technology are key.

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 48.8 51.4 Typical 2,472
Performance warranty 25 yrs 30 yrs Weak · bottom 7% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

Owners who want a long output guarantee, tight roof space and roofs where every square metre has to count.

Watch-outs
25 year performance warranty

Bottom 7% of the TOPCon 400-450 W segment, against a median of 30 yrs. Ranked 9,798th in the whole database.

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
  • At 21.5% efficiency, this panel is on par with typical TOPCon 400-450W modules
  • Power density of 215.1 W/m² is 5.1 W/m² below TOPCon 400-450W median (220.2 W/m²) - needs more roof space
  • At -0.29%/°C, hot weather performance is typical for TOPCon 400-450W panels
  • Weight of 20.5 kg (1.5 kg below TOPCon 400-450W median of 22.0 kg) allows easier transport and roof mounting
  • In the top 57% for efficiency among all TOPCon panels

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 20.5 kg Typical Typical · median 22.0 kg
Cells 108 · TOPCon Monocrystalline
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 12 years Hardware defects only
Performance warranty 25 years Weak bottom 7% · median 30 yrs
End-of-warranty output 89.4 % Equals 367 W guaranteed

Datasheet charts

Open datasheet PDF

Measured curves published by SunKean 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
-

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 SunKean panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
SunKean SKT420M10-108S1 420 W 21.50% -0.290 20.5 kg You are here
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +45 W, +2.3 pp, +5 yr warranty
LX-465M/182R-96+ GG 465 W 23.80% -0.260 23.5 kg +45 W, +2.3 pp, +5 yr warranty
SPR-MAX7-470 470 W 23.70% -0.270 21.1 kg +50 W, +2.2 pp, +15 yr warranty
AIKO-A470-MAH54Mb 470 W 23.60% -0.260 21.5 kg +50 W, +2.1 pp, +5 yr warranty
AIKO-A460-MAH54Mb 460 W 23.60% -0.290 20.5 kg +40 W, +2.1 pp, +5 yr warranty
HSM-BD54-LA470 470 W 23.60% -0.260 21.5 kg +50 W, +2.1 pp, +5 yr warranty
SKT345M10 345 W 17.70% -0.290 20.5 kg -75 W, -3.8 pp
SKT350M10 350 W 17.90% -0.290 20.5 kg -70 W, -3.6 pp
SKT355M10 355 W 18.20% -0.290 20.5 kg -65 W, -3.3 pp
SKT360M10 360 W 18.40% -0.290 20.5 kg -60 W, -3.1 pp
SKT365M10 365 W 18.70% -0.290 20.5 kg -55 W, -2.8 pp
SKT385M10 385 W 19.80% -0.350 23.4 kg Hotter, -1.7 pp, +5 yr warranty
SKT390M10 390 W 20.00% -0.350 23.4 kg Hotter, -1.5 pp, +5 yr warranty
SKT395M10 395 W 20.20% -0.350 23.4 kg Hotter, -1.3 pp, +5 yr warranty
SKT400M10 400 W 20.50% -0.350 23.4 kg Hotter, -1.0 pp, +5 yr warranty
SKT405M10 405 W 20.80% -0.350 23.4 kg Hotter, -0.7 pp, +5 yr warranty
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +90 W, +3.5 pp, +5 yr warranty

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 SunKean SKT415~435M10-108S1 series come with?
SunKean provides a 12-year product warranty on SKT415~435M10-108S1 modules, covering manufacturing defects and material failures. The series also includes a 25-year linear power warranty: at least 97.5% of rated output after year one, and no less than 89.4% after 25 years. These guarantees provide a solid baseline for calculating long-term ROI on both residential and commercial installations.
What is TOPCon technology and why choose the SunKean SKT415~435M10-108S1 series?
TOPCon (Tunnel Oxide Passivated Contact) is an N-type monocrystalline cell technology that achieves higher efficiency and significantly lower LID and LETID degradation compared to PERC. The SKT415~435M10-108S1 modules reach up to 21.77% module efficiency, delivering more energy from the same roof area. Over the long term, this means more stable and predictable energy yields throughout the system's operational lifetime.
How much does the SunKean SKT435 weigh and is it suitable for a typical sloped roof?
The SKT435 module measures 1722×1134×30 mm and weighs 20.5 kg, which is standard for 430+ W class panels. This weight and size are well within the load capacity of typical residential roof structures. The 108-cell half-cut layout improves performance under partial shading from chimneys or dormers, and the anodized aluminum frame ensures weather resistance throughout the full warranty period.
Do SunKean SKT435 panels perform well in cloudy or low-irradiance conditions?
Yes. N-type TOPCon cells offer better spectral response at low irradiance compared to PERC technology. The anti-reflective coated glass on the SKT415~435M10-108S1 modules further improves light absorption at low incidence angles, typical of mornings, evenings, and overcast days. In practice, this results in higher annual energy yields in temperate climates such as those found across Poland and Central Europe.
Is the SunKean SKT415~435M10-108S1 series a bifacial panel?
No, the SKT415~435M10-108S1 series is a monofacial (single-sided) panel. Energy is captured only from the front surface. This makes it the right choice for standard rooftop installations where the rear side is covered by the roof surface or receives insufficient reflected irradiance, keeping overall system costs lower and installation straightforward without the need for elevated racking.
What does the 16BB multi-busbar design mean in the SKT415~435M10-108S1 panels and what are the practical benefits?
16BB refers to 16 busbars per cell. More busbars shorten the current path, reducing resistive losses and increasing module efficiency. Equally important is improved resistance to micro-cracks during transport and installation: mechanical stress is distributed across 16 contact lines rather than the 5 or 9 found in older designs. This directly reduces the risk of hidden cell damage that could cause power output degradation over the first few operating seasons.
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