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Sunket New Energy SKT425M10-108S1
Sunket New Energy Brand review

SKT425M10-108S1

425 Wp TOPCon
ComparePV verdict

Light for its output, short guarantee

Rank 10,856 of 14,005
Compare panels Datasheet PDF
Power (Wp)
425
Typical for its class
Efficiency (%)
21.80
Typical · median 22.00%
Density (Wp/m²)
217.6
Typical · median 220.2
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
20.5
Strong · 1.5 kg below median
Warranty (yrs)
25
Weak · bottom 7%

The Sunket New Energy SKT415-435M10-108S1 series features advanced monocrystalline modules that optimize the performance of rooftop installations while maintaining compact dimensions. Thanks to the use of Half-Cut cells and modern M10 format silicon wafers, these panels effectively minimize energy losses resulting from periodic shading and internal resistance. This solution is dedicated primarily to prosumers seeking maximum power from a limited roof area, where every square meter is crucial. The applied Multi-busbar technology shortens the current flow path and significantly reduces the risk of micro-cracks, which directly translates into longevity and yield stability in the demanding Polish climate. The series is characterized by high energy conversion efficiency, allowing for a faster return on investment compared to older generation modules. These products solve the problem of installation on complex roof surfaces, offering an excellent weight-to-power output ratio. Exceptional resistance to potential-induced degradation and increased mechanical strength against snow and wind loads make these panels a solid, reliable alternative to more expensive premium segment solutions. This is a conscious choice for installers who focus on modern cell architecture and reliable technical parameters, ensuring peace of mind for many years of operation.

Ranking

1,218 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.80% 22.00% Typical 7,022
Power density 217.6 220.2 Typical 7,172
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 48.2 51.4 Strong · top 21% 2,123
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

1 positive · 1 caution
Best for

Residential and shaded-installations.

Not ideal for

Owners who want a long output guarantee.

Strengths
48.2 kg per kWp

Top 21% of the TOPCon 400-450 W segment, against a median of 51.4.

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.

Notes from the database
  • Efficiency of 21.8% matches the TOPCon 400-450W median
  • At 217.6 W/m² power density, roof space requirements are typical for TOPCon 400-450W panels
  • 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 50% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 425 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.80 % Typical Segment median 22.00%
Vmpp · Impp 31.71 V · 13.41 A Operating point at max power
Voc · Isc 38.30 V · 14.15 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 Strong Strong · 1.5 kg below median
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 371 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 425 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
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Sunket New Energy SKT425M10-108S1 425 W 21.80% -0.290 20.5 kg You are here
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg +50 W, +2.2 pp, +15 yr warranty
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +40 W, +2.0 pp, +5 yr warranty
JAT54S40-475/LR 475 W 23.80% -0.260 19.3 kg +50 W, +2.0 pp, +5 yr warranty
TWMNH-48HW475 475 W 23.80% -0.280 23.7 kg +50 W, +2.0 pp, +5 yr warranty
CHSM48RN(DG)/F-BH-475 475 W 23.80% -0.290 24.5 kg +50 W, +2.0 pp, +5 yr warranty
AIKO-A475-MCE54Mw 475 W 23.80% -0.260 21.0 kg +50 W, +2.0 pp, +5 yr warranty
AIKO-A475-MAH54Mw 475 W 23.80% -0.260 21.5 kg +50 W, +2.0 pp, +5 yr warranty
SKT345M10 345 W 17.70% -0.290 20.5 kg -80 W, -4.1 pp
SKT350M10 350 W 17.90% -0.290 20.5 kg -75 W, -3.9 pp
SKT355M10 355 W 18.20% -0.290 20.5 kg -70 W, -3.6 pp
SKT360M10 360 W 18.40% -0.290 20.5 kg -65 W, -3.4 pp
SKT365M10 365 W 18.70% -0.290 20.5 kg -60 W, -3.1 pp
SKT385M10 385 W 19.80% -0.350 23.4 kg Hotter, -2.0 pp, +5 yr warranty
SKT390M10 390 W 20.00% -0.350 23.4 kg Hotter, -1.8 pp, +5 yr warranty
SKT395M10 395 W 20.20% -0.350 23.4 kg Hotter, -1.6 pp, +5 yr warranty
SKT400M10 400 W 20.50% -0.350 23.4 kg Hotter, -1.3 pp, +5 yr warranty
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +85 W, +3.2 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 is included with the Sunket SKT415~435M10-108S1 solar panels?
The manufacturer provides a 12-year product warranty covering workmanship and materials, along with a 25-year linear power output warranty. The panel must maintain its declared efficiency according to the degradation curve specified in the warranty documentation throughout that period. For a prosumer, this represents solid investment protection over a typical 15-year payback horizon.
What is TOPCon technology and why does the SKT415~435M10-108S1 series use it?
TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that reduces carrier recombination through a thin silicon oxide passivation layer. In practice, this delivers conversion efficiency up to approximately 22% and a low temperature coefficient of power at -0.29%/°C, resulting in better energy yield during hot summer days compared to the widely used PERC technology.
Are the Sunket SKT415~435M10-108S1 panels suitable for installation on a small roof?
Yes, the SKT415~435M10-108S1 series is a strong choice when roof space is limited. Each module measures 1722×1134×30 mm and weighs approximately 20.5 kg. With up to 435 Wp per module, a 10 kWp system requires only around 56 m² of active roof area, making this series particularly efficient for residential and urban installations.
How do the SKT415~435M10-108S1 panels perform in winter and overcast conditions in Poland?
TOPCon technology features a temperature coefficient of power of -0.29%/°C, meaning that on cold, sunny winter days the panels can actually outperform their STC-rated output compared to hot summer conditions. The 108-cell half-cut layout and 16BB multi-busbar design also improve shade tolerance, which is important during winter months when the sun angle is low and partial shading from chimneys or dormers is more frequent.
How does the SKT415~435M10-108S1 series differ from older PERC modules?
N-type TOPCon cells in the SKT415~435M10-108S1 series achieve efficiency up to approximately 22%, compared to the typical 20–21% for P-type PERC. The key differences are a lower temperature coefficient and significantly slower long-term degradation due to reduced LID and LeTID effects. This translates into higher annual energy yield from the same roof area and better durability over a multi-decade service life.
Is the Sunket SKT415~435M10-108S1 panel difficult to install on a pitched roof?
No, the module weighs approximately 20.5 kg and measures 1722×1134 mm, which falls within the standard range for modules in this power class. MC4-compatible connectors enable fast and reliable string wiring, and the junction box carries an IP68 ingress protection rating. The module is compatible with standard racking systems available on the Polish market, including hook-mounted solutions designed for tile and metal roofing.
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