Skip to main content
Solar N Plus SP-N16/108HG-420
Solar N Plus Brand review

SP-N16/108HG-420

420 Wp TOPCon Bifacial 80%
ComparePV verdict

Middle of its segment, heavy for its output

Rank 10,275 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)
24.0
Weak · 2.0 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The Solar N Plus SP-N16/108HG series is designed for maximum energy yield in situations where every square meter of roof space counts. These modules utilize N-type cells in TOPCon technology, which help minimize losses under real-world operating conditions, especially at higher temperatures and under variable sunlight. In practice, this translates to more predictable energy production and a better return on investment over the course of a year.

The use of a double-glass construction enhances resistance to microcracks and material fatigue, which is important for installations exposed to wind, snow, and frequent thermal cycling. Another key feature is bifaciality - the module can also utilize reflected light from the ground, increasing energy yield in ground-mounted installations, on bright roofs, and on carport structures.

This is a good choice for prosumers and companies that want reduced degradation over time and stable module performance over the long term, without compromising on quality.

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 57.1 51.4 Weak · bottom 13% 11,083
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 · 3 caution
Best for

Residential, commercial and hot-climate.

Not ideal for

Weight-limited structures, tight roof space and roofs where every square metre has to count.

Watch-outs
57.1 kg per kWp

Bottom 13% of the TOPCon 400-450 W segment, against a median of 51.4.

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
  • Efficiency of 21.5% matches the TOPCon 400-450W median
  • At 215.1 W/m², this panel generates 5.1 W/m² less per unit area than TOPCon 400-450W median (220.2 W/m²)
  • At -0.29%/°C, hot weather performance is typical for TOPCon 400-450W panels
  • At 24.0 kg, this panel is 2.0 kg heavier than the TOPCon 400-450W median (22.0 kg) - more demanding for installation crews
  • Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface

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 33.30 V · 12.61 A Operating point at max power
Voc · Isc 38.85 V · 13.46 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 24.0 kg Weak Weak · 2.0 kg above median
Cells 108 · TOPCon Monocrystalline
Bifaciality 80 % 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 42 °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 Solar N Plus 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.

30-Year Linear Power Output Warranty 30-Year Linear Power Output 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
Solar N Plus SP-N16/108HG-420 420 W 21.50% -0.290 24.0 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
SP-M10/108HG-395 395 W 20.20% -0.350 24.1 kg -25 W, hotter, -1.3 pp
SP-M10/108HG-400 400 W 20.50% -0.350 24.1 kg -20 W, hotter, -1.0 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, lighter, +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, lighter, +3.0 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +80 W, cooler, +3.0 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +80 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 warranty does the Solar N Plus SP-N16/108HG series come with?
The SP-N16/108HG series includes a 15-year product warranty covering material and workmanship defects, and a 30-year power output warranty guaranteeing at least 87.4% of rated power after three decades of operation. This is one of the longer power warranty standards available on the market, providing reliable investment planning over a 30-year horizon.
Do the bifacial SP-N16/108HG modules actually produce more energy than standard panels?
Yes. The bifacial design of the SP-N16/108HG captures irradiance from both the front and rear surfaces, harvesting light reflected from the ground, a light-colored roof, or surrounding surfaces. In practice this delivers an additional 5–25% energy yield depending on installation conditions. The gain is greatest in ground-mount systems, on light-colored surfaces, and in carport structures where the rear side of the module receives significant reflected irradiance.
How does the SP-N16/108HG perform on hot summer days at high temperatures?
The TOPCon N-type cell technology features a low temperature coefficient of approximately –0.29%/°C, outperforming conventional PERC modules. A 10°C rise in panel temperature causes only about 2.9% power loss — noticeably less than older technologies. In real-world conditions, where rooftop panel temperatures frequently exceed 60–70°C in summer, this translates into measurably higher actual energy yield.
How does the glass-glass construction of the SP-N16/108HG differ from standard backsheet modules?
Conventional panels use a polymer backsheet that can absorb moisture and develop microcracks over time. The SP-N16/108HG uses tempered glass on both sides, significantly improving mechanical strength, eliminating backsheet degradation risk, and extending module service life. The dual-glass structure handles thermal cycling, snow loads, and high-wind conditions more reliably — especially important for exposed rooftop and ground-mount installations.
Is the SP-N16/108HG series suitable for installation on a standard pitched roof?
Yes. The SP-N16/108HG modules measure 1722×1134×30 mm and weigh approximately 24 kg, compatible with standard rail-and-clamp racking systems used in residential rooftop installations. However, due to the dual-glass construction, these panels are heavier than backsheet modules. For larger systems, it is advisable to verify roof load capacity with your installer and select an appropriately rated mounting structure.
What does the lower degradation rate of the SP-N16/108HG mean for a system owner?
TOPCon N-type cells degrade more slowly than conventional PERC technology, with an annual power loss of approximately 0.35–0.40%. After 25 years the panel retains close to 90% of its initial output, and the manufacturer's warranty guarantees a minimum of 87.4% after 30 years. For the system owner this means more predictable energy production and greater savings over the long term without the need to replace modules prematurely.
Add to compare