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Solar N Plus SP-G12/132HG670W
Solar N Plus Brand review

SP-G12/132HG670W

670 Wp PERC Bifacial 70%
ComparePV verdict

Efficiency leader, weak in heat

Rank 1,999 of 14,005
Compare panels Datasheet PDF
Power (Wp)
670
Strong · top 18%
Efficiency (%)
21.60
Strong · top 13%
Density (Wp/m²)
215.7
Strong · top 18%
Temp (%/°C)
-0.350
Weak · bottom 10%
Weight (kg)
38.7
Typical · median 34.5 kg
Warranty (yrs)
30
Typical · median 30 yrs

The CYGNUS SP-G12/132HG series is a bifacial photovoltaic module built on half-cut PERC cells in the G12 format, arranged in a 6x22 layout that ensures even current distribution and reduces power losses under partial shading. The panel stands out with its bifacial glass-glass construction, allowing reflected irradiance from the surrounding surface to translate into a real gain in energy yield, particularly on light-colored roofs, gravel surfaces, or ground-mounted installations. It's a solid choice for investors looking to maximize output per square meter without expanding the installation footprint. The design is optimized for a low temperature coefficient, limiting power losses on hot days and improving output stability in warmer climates. The robust dual-glass build, combined with resistance to mechanical loads and hail impact, makes the module well suited for both rooftop systems and utility-scale solar farms. A key advantage of the series is its low power degradation over time, backed by a long-term linear performance warranty, which translates into predictable, long-term return on investment and a lower LCOE across the system's lifecycle. The panel is MC4 compatible, simplifying integration with standard BoS components.

Ranking

320 panels in the segment PERC 650-700 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.60% 21.25% Strong · top 13% 7,652
Power density 215.7 212.5 Strong · top 18% 7,644
Temperature coefficient -0.350 -0.340 Weak · bottom 10% 10,419
Weight per kWp 57.8 52.3 Typical 11,399
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

2 positive · 1 caution
Best for

Utility-scale, hot-climate and shaded-installations.

Not ideal for

Hot climates.

Strengths
21.60% module efficiency

Top 13% of the PERC 650-700 W segment, against a median of 21.25%.

215.7 watts per square metre

Top 18% of the PERC 650-700 W segment, against a median of 212.5.

Watch-outs
-0.350 %/°C temperature coefficient

Bottom 10% of the PERC 650-700 W segment, against a median of -0.340.

Notes from the database
  • At 21.6% efficiency, this panel is on par with typical PERC 650-700W modules
  • Power density of 215.7 W/m² packs 3.2 W/m² more into the same footprint vs PERC 650-700W median (212.5 W/m²)
  • Temperature coefficient of -0.35%/°C matches the PERC 650-700W median
  • Weight of 38.7 kg is 4.2 kg above PERC 650-700W median (34.5 kg) - verify structural support
  • 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces

Specifications

Open datasheet PDF
Nominal power (Pmax) 670 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.60 % Strong Segment median 21.25%
Vmpp · Impp 38.40 V · 17.45 A Operating point at max power
Voc · Isc 46.20 V · 18.41 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2384×1303×30 mm · 3.11 m² of roof
Weight 38.7 kg Typical Typical · median 34.5 kg
Cells 132 · PERC Monocrystalline
Bifaciality 70 % Rear output as a share of front
Coefficient Pmax -0.350 %/°C Weak bottom 10% of its segment
Coefficient Voc · Isc -0.280 · 0.050 %/°C
NOCT 45 °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 85.0 % Equals 569 W guaranteed
Degradation 2.00 → 0.45 % First year, then annual

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
-0.350 %/°C against a segment median of -0.340
-
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-G12/132HG670W 670 W 21.60% -0.350 38.7 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Cooler, lighter, +3.6 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, lighter, +3.6 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, lighter, +3.4 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +3.4 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg Cooler, lighter, +3.4 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg Cooler, lighter, +3.3 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +3.2 pp
SP-G12/132HG655W 655 W 21.10% -0.350 38.7 kg -15 W, -0.5 pp
SP-G12/132HG660W 660 W 21.20% -0.350 38.7 kg -10 W, -0.4 pp
SP-G12/132HG665W 665 W 21.40% -0.350 38.7 kg -0.2 pp
SP-G12/132HG675W 675 W 21.70% -0.350 38.7 kg Very close match
SP-N18/132HG-700W 700 W 22.50% -0.300 38.1 kg +30 W, cooler, +0.9 pp
SP-N18/132HG-705W 705 W 22.70% -0.300 38.1 kg +35 W, cooler, +1.1 pp
SP-N18/132HG-710W 710 W 22.90% -0.300 38.1 kg +40 W, cooler, +1.3 pp
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +135 W, cooler, +3.5 pp
AIKO-A800-GRH78Dw 800 W 24.90% -0.260 39.8 kg +130 W, cooler, +3.3 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
Is the CYGNUS SP-G12/132HG series still available for purchase?
No, production of the CYGNUS SP-G12/132HG series has been discontinued and the model is no longer part of the active lineup. Availability is now limited to remaining distributor stock. If you plan to expand an existing installation, act quickly, since matching an identical panel to already installed modules may become difficult, and the manufacturer recommends newer-generation models as replacements.
What does the bifacial design of the CYGNUS SP-G12/132HG panels mean, and is it worth it?
Bifacial design means the module generates energy from both the front and back sides, thanks to a glass rear layer instead of a standard backsheet. Additional light reflected off the ground, especially on light-colored roofs, gravel surfaces, or ground-mount installations, results in a real increase in energy yield without increasing installation area. This makes it especially worthwhile where panels are mounted above a bright surface or on freestanding racking with clearance beneath the module.
What warranty comes with the CYGNUS SP-G12/132HG panels?
Manufacturer Solar N Plus provides a 15-year product warranty and a 30-year linear power warranty. This means guaranteed, gradual power degradation over time instead of a sudden drop in output, supporting a predictable return on investment. Since this model is discontinued, it's worth confirming current service terms directly with your distributor.
What is the maximum power output of the CYGNUS SP-G12/132HG panel, and how many are needed for a typical installation?
The panel reaches a maximum power of 675 Wp thanks to half-cut PERC cells in G12 format arranged in a 6x22 configuration. With this per-unit output, a typical residential 10 kWp installation needs around 15 modules, reducing the total panel count and simplifying installation compared to lower-power modules.
Do the CYGNUS SP-G12/132HG panels perform well in summer heat?
Yes, the series is engineered with a low temperature coefficient of power, which limits output losses on hot days. This matters in summer, when panel surface temperatures can reach 60-70 degrees Celsius and standard modules lose a significant share of their power. This optimization keeps energy production more stable even in warmer climates.
Are the CYGNUS SP-G12/132HG panels suitable for a gravel roof or ground-mount installation?
Yes, these are exactly the setups that make the most of this series' bifacial technology. A light gravel surface or the ground beneath a ground-mount racking system reflects extra sunlight onto the module's glass rear side, boosting real-world energy yield without expanding the installation footprint. The robust dual-glass construction also provides the mechanical durability needed in these conditions.
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