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Sunlike Solar Brand review

SKT420M10-108D4

420 Wp TOPCon Bifacial 2500%
ComparePV verdict

Middle of its segment, modest efficiency

Rank 10,198 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)
21.0
Typical · median 22.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Sunlike Solar SKT410-430M10-108D4 panel series introduces a new quality to modern photovoltaic installations thanks to the use of advanced N-type TopCon cell technology, which effectively eliminates the problem of LID and LeTID degradation. These modules solve the investor dilemma regarding limited roof space, offering high energy conversion efficiency while maintaining optimal, compact dimensions. The unique bifacial double glass design allows for the efficient use of reflected light, which, combined with a dense busbar layout, guarantees the minimization of resistance losses and current flow. This series is dedicated to demanding residential users and businesses that prioritize maximum yields in diffuse light conditions, so characteristic of the Polish climate zone. What distinguishes these modules from standard solutions is an exceptionally low temperature coefficient, ensuring stable operation and smaller power drops during summer heat waves. Choosing this series is an investment in increased mechanical resistance and longevity, which directly translates into a faster return on investment and energy security for the building for decades to come. By combining aesthetics with innovative materials engineering, these panels provide a solid foundation for PV systems focused on reliability.

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 50.0 51.4 Typical 3,317
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 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
  • 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
  • At 21.0 kg, weight matches the TOPCon 400-450W median
  • #7958 for efficiency, #2165 for temperature performance out of 14005 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 31.97 V · 13.14 A Operating point at max power
Voc · Isc 38.46 V · 13.71 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 Typical Typical · median 22.0 kg
Cells 108 · TOPCon Monocrystalline
Bifaciality 2500 % 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 Sunlike Solar 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 N Type Linear Warranty Sunket N Type 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
Sunlike Solar SKT420M10-108D4 420 W 21.50% -0.290 21.0 kg You are here
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +45 W, hotter, +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, +2.1 pp
HSM-BD54-LA470 470 W 23.60% -0.260 21.5 kg +50 W, cooler, +2.1 pp
LNVB-395M 395 W 20.23% -0.360 21.0 kg Hotter, -1.3 pp, -5 yr warranty
LNVB-400M 400 W 20.48% -0.360 21.0 kg Hotter, -1.0 pp, -5 yr warranty
LNVB-405M 405 W 20.74% -0.360 21.0 kg Hotter, -0.8 pp, -5 yr warranty
SKT410M10-108D4 410 W 21.00% -0.290 21.0 kg -10 W, -0.5 pp
SKT415M10-108D4 415 W 21.30% -0.290 21.0 kg Very close match
SKT425M10-108D4 425 W 21.80% -0.290 21.0 kg +0.3 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +90 W, cooler, +3.5 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +75 W, cooler, +3.3 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +85 W, cooler, +3.2 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +70 W, cooler, +3.0 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 is the TOPCon technology used in the Sunlike Solar SKT410-430M10-108D4 series and why does it matter?
TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell architecture featuring an ultra-thin tunnel oxide layer that virtually eliminates LID and LeTID degradation phenomena found in older PERC modules. For the SKT410-430M10-108D4 series, this translates to sustained high conversion efficiency over the entire service life and no risk of unexpected power drops during the first years of system operation.
Do the Sunlike Solar SKT410-430M10-108D4 panels perform well in overcast conditions typical of Polish weather?
Yes. The SKT410-430M10-108D4 series demonstrates excellent low-light response, which is critical in the Central European climate. The bifacial double glass construction additionally harvests albedo light reflected from the ground surface, boosting annual energy yield by up to several percent compared to standard monofacial modules, making this series particularly well-matched to Poland's frequently overcast skies.
What warranty comes with the Sunlike Solar SKT410-430M10-108D4 solar panels?
Sunlike Solar provides a 15-year product warranty covering material defects and workmanship, along with a 30-year linear power output warranty guaranteeing at least 87.4% of rated power at end of life. This extended dual-warranty structure directly protects the return on investment across the full operational lifetime of the PV system.
How do high summer temperatures affect the output of the SKT410-430M10-108D4 panels?
The power temperature coefficient of this series is just -0.29%/°C, placing it among the best in its module class. When a panel heats up to 65°C on a hot summer day — 40°C above STC — the power loss amounts to only approximately 11.6%, compared to the typical 14–16% seen in standard PERC modules. This results in more stable energy production during peak summer hours and higher annual yields.
Are the bifacial SKT410-430M10-108D4 panels suitable for a typical pitched roof installation?
Yes. The modules measure 1722×1134×30 mm and weigh approximately 21 kg, making them manageable to transport and install on standard pitched roofs. The 30 mm aluminum frame is compatible with racking systems widely available across the European market. To fully leverage bifacial gain, a light-colored surface beneath the array and a roof pitch of 30–40° with south-facing orientation are recommended.
Which inverters are compatible with the Sunlike Solar SKT410-430M10-108D4 panels?
The SKT410-430M10-108D4 series delivers up to 430 Wp with an open-circuit voltage (Voc) typical of 108-cell M10 modules, making it compatible with any inverter supporting a wide MPPT input voltage window. It works well with popular string inverters available in Poland (Fronius, SMA, Huawei, Solis) as well as systems using microinverters or power optimizers.
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