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Solar N Plus Brand review

SP-N16/108H425W

425 Wp N-type
ComparePV verdict

Light for its output, weak in heat

Rank 9,023 of 14,005
Compare panels Datasheet PDF
Power (Wp)
425
Typical for its class
Efficiency (%)
21.80
Typical · median 21.91%
Density (Wp/m²)
218.3
Typical · median 218.3
Temp (%/°C)
-0.350
Weak · bottom 4%
Weight (kg)
10.8
Strong · 11.2 kg below median
Warranty (yrs)
30
Typical · median 30 yrs

The Solar N Plus SP-N16/108H series consists of monocrystalline modules with a 108-cell array, designed for high efficiency and stable operation under real-world conditions. They are distinguished by TOPCon technology, which helps to minimize energy losses and maintain good performance even when the installation operates at higher temperatures or with reduced sunlight. This is a solution for investors who want to maximize the output from the same roof or ground area.

In practice, SP-N16/108H solves common installation problems such as reduced yield in hot weather, uncertainty about parameters, and the risk of faster degradation. This is made possible by positive power tolerance, which makes it easier to plan the project without unexpected issues after installation, and long linear warranty, which is essential for long-term profitability.

The series is suitable for both single-family homes and small businesses, as well as commercial projects, where high power density and compatibility with modern inverters are important. In addition, the IP68 sealed junction box provides reliability in Polish weather conditions.

Ranking

321 panels in the segment N-type 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.80% 21.91% Typical 7,022
Power density 218.3 218.3 Typical 6,966
Temperature coefficient -0.350 -0.290 Weak · bottom 4% 10,419
Weight per kWp 25.4 51.2 Strong · top 2% 116
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

1 positive · 1 caution
Best for

Residential, commercial, shaded-installations and hot-climate.

Not ideal for

Hot climates.

Strengths
25.4 kg per kWp

Top 2% of the N-type 400-450 W segment, against a median of 51.2. Ranked 116th in the whole database.

Watch-outs
-0.350 %/°C temperature coefficient

Bottom 4% of the N-type 400-450 W segment, against a median of -0.290. Ranked 10,419th in the whole database.

Notes from the database
  • At 21.8% efficiency, this panel is on par with typical N-type 400-450W modules
  • At 218.3 W/m² power density, roof space requirements are typical for N-type 400-450W panels
  • -0.35%/°C temperature coefficient - 0.06pp worse than N-type 400-450W median (-0.29%/°C), expect higher hot weather losses
  • Weight of 10.8 kg (11.2 kg below N-type 400-450W median of 22.0 kg) allows easier transport and roof mounting
  • In the top 50% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 425 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.80 % Typical Segment median 21.91%
Vmpp · Impp 32.15 V · 13.22 A Operating point at max power
Voc · Isc 38.59 V · 14.17 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1720×1132×30 mm · 1.95 m² of roof
Weight 10.8 kg Strong Strong · 11.2 kg below median
Cells 108 · N-type Monocrystalline
Coefficient Pmax -0.350 %/°C Weak bottom 4% of its segment
Coefficient Voc · Isc -0.260 · 0.048 %/°C
NOCT 43 °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 371 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

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 425 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
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.350 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Solar N Plus SP-N16/108H425W 425 W 21.80% -0.350 10.8 kg You are here
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg Heavier, +2.2 pp, +10 yr warranty
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg Cooler, heavier, +2.0 pp
JAT54S40-475/LR 475 W 23.80% -0.260 19.3 kg Cooler, heavier, +2.0 pp
TWMNH-48HW475 475 W 23.80% -0.280 23.7 kg Cooler, heavier, +2.0 pp
CHSM48RN(DG)/F-BH-475 475 W 23.80% -0.290 24.5 kg Cooler, heavier, +2.0 pp
AIKO-A475-MCE54Mw 475 W 23.80% -0.260 21.0 kg Cooler, heavier, +2.0 pp
AIKO-A475-MAH54Mw 475 W 23.80% -0.260 21.5 kg Cooler, heavier, +2.0 pp
SP-M10/108HG-395 395 W 20.20% -0.350 24.1 kg -30 W, heavier, -1.6 pp
SP-M10/108HG-400 400 W 20.50% -0.350 24.1 kg -25 W, heavier, -1.3 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, heavier, +3.2 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, heavier, +3.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, heavier, +2.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, heavier, +2.7 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, heavier, +2.7 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg Cooler, heavier, +2.7 pp

Found 1785 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 3978 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 Solar N Plus SP-N16/108H panels?
The SP-N16/108H series includes a 15-year product warranty and a 30-year linear power warranty. A linear warranty means degradation is spread evenly over the entire operating period without sharp early drops. This is a key factor when assessing the long-term return on investment for residential rooftop or commercial installations.
What is TOPCon technology in the SP-N16/108H panels and is it worth the premium?
TOPCon (Tunnel Oxide Passivated Contact) is a monocrystalline cell technology that uses a thin tunnel oxide layer to reduce carrier recombination. In practice, SP-N16/108H modules produce more energy under high temperatures and low irradiance conditions compared to legacy PERC modules of the same rated wattage. For a typical installation, this translates to better yield in spring, autumn, and overcast summer days.
How do Solar N Plus SP-N16/108H panels perform in hot weather and partial shading?
TOPCon technology delivers a lower temperature coefficient than standard PERC modules, meaning smaller power losses when cell temperature exceeds 25°C. The 108-cell layout also reduces the impact of partial shading on the entire string. The SP-N16/108H series maintains stable output under real-world operating conditions, which matters in climates with prolonged hot summer periods.
Do the SP-N16/108H panels have a positive power tolerance and what does it mean for my system?
Yes, the SP-N16/108H series features a positive power tolerance. This means a module rated at 440 Wp will never underperform its nameplate value — it may actually exceed it. When sizing a system, this makes it easier to select the right inverter and accurately estimate annual energy yield without the risk of discovering lower-than-expected output after installation.
Are Solar N Plus SP-N16/108H panels compatible with modern hybrid inverters?
Yes, SP-N16/108H modules are compatible with modern hybrid inverters featuring MPPT inputs designed for high-voltage strings. Their high power density and stable electrical parameters simplify inverter selection from leading manufacturers. Before purchasing, always verify that the inverter's maximum input voltage exceeds the string's open-circuit voltage (Voc) at minimum winter temperatures.
Is the Solar N Plus SP-N16/108H series still available for purchase?
The SP-N16/108H series has been discontinued and is no longer actively distributed by the manufacturer. Limited stock may still exist at some distributors, but availability is restricted and a full supply for larger projects cannot be guaranteed. If you are planning a new installation, consider current Solar N Plus series or alternative TOPCon-based modules offering comparable or improved specifications.
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