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VSUN420N-108MH

420 Wp TOPCon
ComparePV verdict

Middle of its segment, needs the roof space

Rank 10,547 of 14,005
Compare panels Datasheet PDF
Power (Wp)
420
Weak · bottom 16%
Efficiency (%)
21.51
Weak · bottom 20%
Density (Wp/m²)
215.1
Weak · bottom 19%
Temp (%/°C)
-0.300
Typical · median -0.290
Weight (kg)
21.4
Typical · median 22.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The VSUN N-108MH panel series introduces a new quality to rooftop installations thanks to the use of N-type TOPCon cell technology, which effectively eliminates the problem of LID degradation and ensures excellent performance even in diffused light. Choosing this series is primarily a guarantee of stable energy production for decades, which clearly distinguishes it from standard older-generation modules. Thanks to the use of 108 Half-Cut cell construction, the panels are characterized by optimal dimensions and lower weight, making them an ideal solution for prosumers looking for maximum power on a limited roof area. A key technological differentiator is the exceptionally low temperature coefficient, effectively limiting energy losses during summer heatwaves, which is becoming an increasingly important economic asset in the Polish climate. This series effectively solves the problem of power drops caused by partial shading and ensures long-term investment security thanks to increased resistance to mechanical loads. This equipment is dedicated to demanding home users and companies that focus on reliability and maximizing yields from every square meter of the installation. Solid workmanship and modern cell architecture place the VSUN N-108MH at the forefront of premium segment solutions, offering significantly better parameter stability than traditional solutions available on the market.

Ranking

1,218 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.51% 22.00% Weak · bottom 20% 7,894
Power density 215.1 220.2 Weak · bottom 19% 7,882
Temperature coefficient -0.300 -0.290 Typical 6,093
Weight per kWp 51.0 51.4 Typical 4,321
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

Roofs where every square metre has to count and tight roof space.

Watch-outs
215.1 watts per square metre

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

21.51% module efficiency

Bottom 20% of the TOPCon 400-450 W segment, against a median of 22.00%.

Notes from the database
  • Efficiency of 21.5% matches the TOPCon 400-450W median
  • 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
  • Temperature coefficient of -0.30%/°C matches the TOPCon 400-450W median
  • Ranked #7894 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 21.51 % Weak Segment median 22.00%
Vmpp · Impp 31.52 V · 13.32 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 21.4 kg Typical Typical · median 22.0 kg
Cells 108 · TOPCon Monocrystalline
Coefficient Pmax -0.300 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.260 · 0.046 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 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 VSUN 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.

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
-0.300 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
VSUN VSUN420N-108MH 420 W 21.51% -0.300 21.4 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
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, cooler, +2.1 pp
HSM-BD54-LA470 470 W 23.60% -0.260 21.5 kg +50 W, cooler, +2.1 pp
VSUN390-108BMH-DG 390 W 19.97% -0.320 24.7 kg -30 W, heavier, -1.5 pp
VSUN395-108BMH-DG 395 W 20.23% -0.320 24.7 kg -25 W, heavier, -1.3 pp
VSUN400-108BMH-DG 400 W 20.48% -0.320 24.7 kg Hotter, heavier, -1.0 pp
VSUN405-108BMH-DG 405 W 20.74% -0.320 24.7 kg Hotter, heavier, -0.8 pp
VSUN410-108BMH 410 W 21.00% -0.320 21.4 kg -10 W, hotter, -0.5 pp
VSUN415N-108MH 415 W 21.25% -0.300 21.4 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
How does N-type TOPCon technology in the VSUN N-108MH differ from older PERC panels?
Unlike P-type cells, N-type TOPCon cells are not subject to LID degradation, the initial power loss seen in the first hours of sun exposure. Thanks to an additional passivation layer, the panel achieves higher efficiency (over 21%) and better utilizes diffuse light on cloudy days. In practice, this means higher and more stable energy yields over the panel's lifetime compared to classic PERC modules.
What warranty comes with VSUN N-108MH panels, and what does it cover?
The manufacturer provides a 25-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. This means the panel should still deliver a high percentage of its initial power after that period. Such an extended warranty reflects the manufacturer's confidence in the durability of TOPCon cells and is an important factor when comparing offers from different brands.
Are VSUN N-108MH panels suitable for a small pitched roof?
Yes, thanks to the 108-cell half-cut design, the panel has compact dimensions of roughly 1722x1134 mm and weighs about 21.4 kg, making it easier to carry and install on typical pitched roof structures. With up to 435 Wp per module, this lets you fit more capacity onto a limited roof area, which matters for single-family homes with small roof surfaces.
How does the VSUN N-108MH perform on hot roofs in summer?
The panel has a very low temperature coefficient of -0.3%/°C, notably better than the -0.35 to -0.4%/°C typical of PERC modules. This means a smaller power drop as cell temperature rises above the standard 25°C test condition, which matters in summer when roof surfaces in Poland can reach 60-70°C. This translates into higher real-world energy output during the hottest months.
Is the VSUN N-108MH a bifacial solar panel?
No, this specific version of the N-108MH series is a mono-facial (single-sided) panel using TOPCon technology and 108 half-cut cells. The manufacturer also offers a bifacial variant (marked with a BB suffix) that uses a transparent backsheet and additionally generates energy from reflected light on the rear side. When choosing between versions, consider your mounting structure type and the space available beneath the modules.
What is half-cut cell construction in the VSUN N-108MH and what are its benefits?
Half-cut means a standard silicon cell is laser-cut in half, resulting in 108 smaller cells wired into two independent electrical sections. This reduces resistive losses and improves the panel's tolerance to partial shading, e.g. from a chimney or antenna - shading one section lowers output only in that section instead of disabling the entire module.
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