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SunKean Brand review

SKT420M10-108D4

420 Wp TOPCon Bifacial
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 SunKean SKT415~435M10-108D4 series are modules based on the TOPCon technology, designed for high energy production even under less-than-ideal conditions. The use of a double-glass structure increases resistance to environmental factors, stabilizes performance over the long term, and makes it easier to select panels for installations where durability is key. Furthermore, these are bifacial modules, meaning they can also utilize reflected light from the ground - allowing you to generate more energy from the same surface, especially on light roofs, membranes, and ground-mounted installations.

In practice, this series solves common problems for investors: limited space, reduced energy production in hot weather, and the risk of faster module degradation. Thanks to the half-cut design and the 16BB multi-busbar structure, the panel better handles micro-shading and internal losses, resulting in more stable string performance. This makes it a good choice for homes, businesses, and PV farms where predictable energy yields and long-term durability are important.

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 and shaded-installations.

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
  • At 21.5% efficiency, this panel is on par with typical TOPCon 400-450W modules
  • 215.1 W/m² power density is 5.1 W/m² below TOPCon 400-450W median (220.2 W/m²) - requires larger installation area
  • Temperature coefficient of -0.29%/°C matches the TOPCon 400-450W median
  • 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
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

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 SKT420M10-108D4 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 SunKean SKT415~435M10-108D4 solar panels?
SunKean provides a 15-year product warranty and a 30-year linear power output warranty. Over those 30 years, the module must maintain energy production within the degradation curve specified by the manufacturer. This is one of the longer warranty standards available for premium-class PV modules and is a meaningful factor when calculating the total cost of ownership over the system's lifetime.
What does bifacial mean for the SunKean SKT435M10-108D4, and how much extra energy can it produce?
Bifacial means the module generates power from both sides. The front captures direct solar irradiance while the rear collects light reflected from the roof surface or ground (albedo effect). The actual energy gain depends on surface reflectivity and mounting height, but on white membranes or ground-mount systems it can add several to over ten percent compared to a conventional monofacial module at the same rated 435 Wp.
Why choose TOPCon over PERC technology in the SunKean SKT415~435M10-108D4 series?
TOPCon (Tunnel Oxide Passivated Contact) achieves higher cell efficiency than legacy PERC by reducing recombination losses through superior surface passivation. This translates into higher power output from the same footprint, a lower temperature coefficient meaning less power loss on hot days, and slower long-term degradation. The SKT415~435M10-108D4 series reaches its peak output of 435 Wp specifically because of this cell technology.
How do half-cut cells and 16 busbars (16BB) affect the performance of a SunKean SKT435M10-108D4 system?
Half-cut cells split each cell in two, reducing internal resistance and heat dissipation, and limiting the impact of partial shading on the rest of the string. The 16BB design provides more current pathways, further lowering resistive losses. The practical result is more stable string output under partial shading conditions caused by chimneys, antennas, or neighboring structures, improving overall MPPT efficiency.
Are the double glass SunKean SKT415~435M10-108D4 panels heavier, and does the roof structure need reinforcement?
Yes, dual-glass construction is heavier than standard backsheet modules, so the mounting structure — whether roof-based or ground-mount — must be engineered to accommodate the additional weight. In return, you gain significantly higher mechanical strength, moisture resistance, and protection against PID (Potential Induced Degradation), extending the module's service life. These advantages are especially valuable in commercial rooftop and utility-scale installations.
Is the SunKean SKT415~435M10-108D4 series suitable for utility-scale PV farms?
Yes, this series is well suited for ground-mount and utility-scale solar farms. The bifacial design captures reflected ground irradiance, which improves energy yield without increasing land use. The reinforced double glass construction withstands demanding field conditions including moisture, wind loads, and thermal cycling. The 415–435 Wp power range allows efficient string design and reduces the total module count needed to reach target farm capacity.
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