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Solar N Plus Brand review

SP-N18/132HG-705W

705 Wp TOPCon Bifacial 80%
ComparePV verdict

Middle of its segment, heavy for its output

Rank 747 of 14,005
Compare panels Datasheet PDF
Power (Wp)
705
Weak · bottom 22%
Efficiency (%)
22.70
Weak · bottom 23%
Density (Wp/m²)
227.0
Weak · bottom 21%
Temp (%/°C)
-0.300
Weak · bottom 22%
Weight (kg)
38.1
Weak · bottom 19%
Warranty (yrs)
30
Typical · median 30 yrs

The Solar N Plus SP-N18/132HG series is designed for maximum energy production in locations where every square meter and long-term stability are crucial. The use of N-type cells and TOPCon architecture results in high efficiency and better performance in hot conditions - this means the installation loses less power on hot days, which is particularly important during the summer season. The panel is bifacial, meaning it can also utilize reflected light from the ground - this is especially beneficial on light roofs, with ballast, on membranes, and in PV farms with adequate spacing between rows.

In practice, SP-N18/132HG solves common problems associated with large-scale projects: limited mounting area, the need for predictable energy yields, and the risk of rapid degradation. The manufacturer also highlights the anti-LID and anti-PID properties, which helps maintain the stable operation of the modules in more challenging operating conditions. This is a good choice for photovoltaic farms, warehouse roofs, and commercial installations, where the long-term cost of energy is the primary concern, rather than short-term gains.

Ranking

420 panels in the segment TOPCon 700-750 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.70% 23.00% Weak · bottom 23% 3,307
Power density 227.0 230.2 Weak · bottom 21% 3,361
Temperature coefficient -0.300 -0.290 Weak · bottom 22% 6,093
Weight per kWp 54.0 52.9 Weak · bottom 19% 8,262
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

Commercial, utility-scale and hot-climate.

Not ideal for

Weight-limited structures, roofs where every square metre has to count and hot climates.

Watch-outs
54.0 kg per kWp

Bottom 19% of the TOPCon 700-750 W segment, against a median of 52.9.

227.0 watts per square metre

Bottom 21% of the TOPCon 700-750 W segment, against a median of 230.2.

-0.300 %/°C temperature coefficient

Bottom 22% of the TOPCon 700-750 W segment, against a median of -0.290.

Notes from the database
  • At 22.7% efficiency, this panel is on par with typical TOPCon 700-750W modules
  • Power density of 226.9 W/m² is 3.2 W/m² below TOPCon 700-750W median (230.2 W/m²) - needs more roof space
  • Temperature coefficient of -0.30%/°C matches the TOPCon 700-750W median
  • Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
  • In the top 24% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 705 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.70 % Weak Segment median 23.00%
Vmpp · Impp 40.70 V · 17.32 A Operating point at max power
Voc · Isc 48.50 V · 18.36 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2384×1303×33 mm · 3.11 m² of roof
Weight 38.1 kg Weak Weak · bottom 19%
Cells 132 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.300 %/°C Weak bottom 22% of its segment
Coefficient Voc · Isc -0.240 · 0.040 %/°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 616 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 705 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
-0.300 %/°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-N18/132HG-705W 705 W 22.70% -0.300 38.1 kg You are here
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, lighter, +2.5 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, lighter, +2.3 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg Cooler, lighter, +2.3 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg Cooler, lighter, +2.2 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +2.1 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg Cooler, lighter, +2.1 pp
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg Cooler, lighter, +2.1 pp
SP-G12/132HG655W 655 W 21.10% -0.350 38.7 kg -50 W, hotter, -1.6 pp
SP-G12/132HG660W 660 W 21.20% -0.350 38.7 kg -45 W, hotter, -1.5 pp
SP-G12/132HG665W 665 W 21.40% -0.350 38.7 kg -40 W, hotter, -1.3 pp
SP-G12/132HG670W 670 W 21.60% -0.350 38.7 kg -35 W, hotter, -1.1 pp
SP-G12/132HG675W 675 W 21.70% -0.350 38.7 kg -30 W, hotter, -1.0 pp
SP-N18/132HG-700W 700 W 22.50% -0.300 38.1 kg Very close match
SP-N18/132HG-710W 710 W 22.90% -0.300 38.1 kg Very close match
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +100 W, cooler, +2.4 pp
AIKO-A800-GRH78Dw 800 W 24.90% -0.260 39.8 kg +95 W, cooler, +2.2 pp

Found 1390 panels of the same or similar size to this one, within ±10 mm. See them here Found 1400 panels of the same or similar size to this one, within ±25 mm. See them here Found 1400 panels of the same or similar size to this one, within ±50 mm. See them here Found 1432 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-N18/132HG come with?
The manufacturer offers a 15-year product warranty and a 30-year power output warranty. After 30 years of operation, the panel is guaranteed to retain at least 87.4% of its rated power. This is one of the longer linear power warranty schedules available in the market for this module class, providing predictable LCOE across the full operational lifetime of the installation.
Is the SP-N18/132HG a good fit for a commercial or industrial rooftop?
Yes, commercial and industrial rooftops are a primary application for this series. At 720 Wp and up to 23.2% efficiency, it maximizes power output from limited roof space. The dual-glass bifacial construction weighs approximately 38 kg and requires an adequate racking system, but TOPCon technology ensures stable, long-term yields with low degradation — a critical factor when calculating LCOE for commercial solar projects.
What is the bifacial gain on the SP-N18/132HG and when does it pay off the most?
Bifacial means the panel generates power from both sides — the rear face captures albedo (reflected light) from the surface below. Bifacial gain is most valuable on rooftops with light-colored membranes or white ballast, in ground-mount PV farms with adequate row clearance from the ground, and on white gravel substrates. With favorable albedo conditions, rear-side contribution can add 5–15% of additional annual energy yield.
How does the SP-N18/132HG perform in hot weather — does it lose much power?
The N-type TOPCon cell technology has a temperature coefficient of approximately -0.30%/°C, which outperforms conventional PERC panels at -0.35%/°C. In practice, this means the module loses proportionally less power on hot summer days. For installations exposed to prolonged high temperatures, this translates into measurably higher annual energy yield compared to older cell technologies.
Is the SP-N18/132HG protected against PID and LID degradation?
Yes, the manufacturer declares anti-PID and anti-LID compliance. N-type cells are inherently far less susceptible to LID than the P-type cells used in PERC modules, meaning the panel does not experience a notable power drop immediately after installation. Annual degradation beyond year one should not exceed 0.4%, ensuring stable output throughout the full 30-year power warranty period.
How many SP-N18/132HG panels do I need to build a 1 MWp solar farm?
At 720 Wp per module, you need exactly 1,389 panels to reach 1 MWp peak capacity (1,000,000 Wp ÷ 720 Wp ≈ 1,389 units). In utility-scale PV projects, it is advisable to add a 1–2% reserve for system losses. The high per-unit wattage of the SP-N18/132HG reduces the total panel count, shortens installation time, and lowers BoS costs compared to lower-wattage modules.
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