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Phono Solar Brand review

NS-665MH-132

665 Wp TOPCon
ComparePV verdict

Middle of its segment, heavy for its output

Rank 2,270 of 14,005
Compare panels Datasheet PDF
Power (Wp)
665
Typical for its class
Efficiency (%)
21.40
Weak · bottom 8%
Density (Wp/m²)
214.1
Weak · bottom 9%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
38.7
Weak · 4.1 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The Phono Solar Monocrystalline 132 series consists of modules based on a 132 half-cut cell configuration, designed for high performance in real-world conditions, even when partial shading or uneven sunlight exposure occurs on the roof. The use of half-cut technology reduces resistive losses and improves the stability of the entire string, resulting in more predictable annual energy yields. Many variants also feature multi-busbar connection, which improves current collection from the cell surface and helps minimize the impact of micro-cracks on module performance.

The modules also stand out for their resistance to environmental conditions - the robust construction and sealed junction box make them easy to install on pitched and flat roofs, as well as in ground-mounted systems. This makes them a good choice for customers who prioritize consistent aesthetics (e.g., in full black versions) and a solution that is easy to integrate with popular inverters and optimizers. The series is suitable for both residential and commercial projects, where consistent quality and reliability are essential.

Ranking

249 panels in the segment TOPCon 650-700 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.40% 22.40% Weak · bottom 8% 8,323
Power density 214.1 223.7 Weak · bottom 9% 8,250
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 58.2 53.2 Weak · bottom 5% 11,622
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 5 caution
Best for

Residential, commercial, utility-scale and shaded-installations.

Not ideal for

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

Watch-outs
58.2 kg per kWp

Bottom 5% of the TOPCon 650-700 W segment, against a median of 53.2. Ranked 11,622nd in the whole database.

21.40% module efficiency

Bottom 8% of the TOPCon 650-700 W segment, against a median of 22.40%. Ranked 8,323rd in the whole database.

214.1 watts per square metre

Bottom 9% of the TOPCon 650-700 W segment, against a median of 223.7. Ranked 8,250th in the whole database.

What owners get
N-type TOPCon + half-cut (132 cells)

N-type TOPCon cells in a 132 half-cut layout reduce resistive losses and improve partial-shading tolerance compared to older PERC modules. Many variants also feature multi-busbar interconnection, which lowers the impact of microcracks on the performance of the whole string.

Up to 23.5% efficiency, matching segment leaders

The 730 Wp variant reaches 23.5% efficiency - identical to the best comparable series from the same period (Huasun Himalaya V-ocean, Recom Lynx Series, Hiwatt Solar HW-M12/132G), meaning no performance gap versus the top of the market.

Tier-1 manufacturer with a 20-year track record

Phono Solar has operated since 2004 and has been continuously listed on BloombergNEF's Tier-1 list since 2014 based on 'bankability strength', which supports project financing by banks and leasing institutions.

Broad power range of 500-730 Wp

16 power variants from 500 to 730 Wp allow the module to be matched to space-constrained residential roofs as well as large commercial or ground-mount projects without switching technology platforms.

Structural durability and full black aesthetics

A robust frame and sealed junction box ease installation on sloped roofs, flat roofs, and ground-mount systems, while full black variants meet demand for a consistent building aesthetic.

Trade-offs
Production ended in 2023

The series was manufactured between 2021 and 2023 and has since been discontinued by the manufacturer. This means limited availability (only existing distributor stock) and potential difficulty with warranty service and matching replacement parts going forward.

15-year product warranty below current standard

The product (workmanship) warranty is 15 years, while newer N-type TOPCon series launched from 2024 onward increasingly align the product warranty with the 25-year performance warranty. The power warranty itself (25-30 years, depending on variant) remains competitive.

Notes from the database
  • Module efficiency of 21.4% is 1.0pp below average for TOPCon 650-700W panels (median: 22.4%)
  • At 214.1 W/m², this panel generates 9.6 W/m² less per unit area than TOPCon 650-700W median (223.7 W/m²)
  • At -0.29%/°C, hot weather performance is typical for TOPCon 650-700W panels
  • Weight of 38.7 kg is 4.1 kg above TOPCon 650-700W median (34.6 kg) - verify structural support
  • Ranked #8323 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 665 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.40 % Weak Segment median 22.40%
Vmpp · Impp 38.50 V · 17.28 A Operating point at max power
Voc · Isc 45.60 V · 18.69 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 Weak Weak · 4.1 kg above median
Cells 132 · TOPCon Monocrystalline
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°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

Datasheet charts

Open datasheet PDF

Measured curves published by Phono Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 665 Wp appear here. The rest cover the whole series.

Additional value from Polycrown Solar's linear warranty Additional value from Polycrown Solar's linear warranty Whole series Current-Voltage Curver Current-Voltage Curver Whole series Power-Voltage Curver Power-Voltage Curver Whole series Voltage current curve at different temperatures Voltage current curve at different temperatures 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
-0.290 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Phono Solar NS-665MH-132 665 W 21.40% -0.290 38.7 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Cooler, lighter, +3.8 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, lighter, +3.8 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, lighter, +3.6 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +3.6 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +35 W, lighter, +3.6 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +30 W, lighter, +3.5 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +3.4 pp
NS-650MH-132 650 W 20.92% -0.290 38.7 kg -15 W, -0.5 pp
NS-655MH-132 655 W 21.08% -0.290 38.7 kg -10 W, -0.3 pp
NS-660MH-132 660 W 21.24% -0.290 38.7 kg Very close match
NS-670MH-132 670 W 21.56% -0.290 38.7 kg Very close match
PS690M13GFH-22/WNH 690 W 22.21% -0.290 37.7 kg +25 W, lighter, +0.8 pp
PS695M13GFH-22/WNH 695 W 22.37% -0.290 37.7 kg +30 W, lighter, +1.0 pp
PS700M13GFH-22/WNH 700 W 22.53% -0.290 37.7 kg +35 W, lighter, +1.1 pp
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +140 W, cooler, +3.7 pp
AIKO-A800-GRH78Dw 800 W 24.90% -0.260 39.8 kg +135 W, cooler, +3.5 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 Phono Solar Monocrystalline132 series come with?
Phono Solar provides a 15-year product warranty and a 30-year linear power output warranty for the Monocrystalline132 series. This means the manufacturer guarantees that module efficiency will remain above a defined threshold for three decades, which is the standard among leading Tier 1 suppliers and provides a solid basis for calculating return on investment.
Do Phono Solar Monocrystalline132 panels perform well under partial shading?
Yes. The Monocrystalline132 series uses a 132 half-cut cell layout that physically splits each cell in two. This means shading on part of the panel — for example from a chimney or dormer — limits losses only to that section while the rest of the module continues operating normally. In variants with multi-busbar cell interconnection, this effect is even more pronounced.
What is TOPCon technology and is it worth choosing in the Phono Solar Monocrystalline132 series?
TOPCon (Tunnel Oxide Passivated Contact) is a next-generation monocrystalline cell featuring a thin tunnel oxide layer that reduces charge carrier recombination and raises conversion efficiency beyond what standard PERC cells can achieve. In practice, this translates to higher energy yields from the same roof area and better performance at elevated temperatures and under diffuse light conditions.
What is the maximum panel power in the Phono Solar Monocrystalline132 series?
The highest power variant in the Monocrystalline132 series reaches 730 Wp. This figure is typical for large-format modules intended for high-capacity residential rooftop systems as well as commercial projects and solar farms, where a high per-panel wattage reduces balance-of-system (BoS) costs per kilowatt-peak installed.
Is the Phono Solar Monocrystalline132 series compatible with popular inverters available in Europe?
Yes. The Monocrystalline132 modules are designed to work with standard string and hybrid inverters as well as power optimizers available on the European market. The series' electrical parameters fall within the input ranges of devices from brands such as SMA, Fronius, Huawei, and SolarEdge, so selecting compatible BoS components is generally straightforward.
Is the Phono Solar Monocrystalline132 series still available for purchase?
The Monocrystalline132 series has been discontinued and is no longer in active production. This means new orders directly from the manufacturer are no longer fulfilled, and availability through distributors is limited to existing stock. If you are planning a new installation, it is worth considering current Phono Solar TOPCon series modules, which offer comparable or superior specifications.
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