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Phono Solar PS705M13GFH-22/WNH
Phono Solar Brand review

PS705M13GFH-22/WNH

705 Wp TOPCon Bifacial 80%
ComparePV verdict

Middle of its segment, needs the roof space

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)
-0.290
Typical · median -0.290
Weight (kg)
37.7
Typical · median 38.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Draco Module Series (N-TOPCON HIGH EFFICIENCY 132-18BB-W-WG) is engineered for maximum energy gain where standard modules lose out - under lower irradiance, high temperatures, and challenging installation locations. The use of N-TOPCon cells enhances performance in suboptimal conditions and minimizes typical efficiency drops seen in older technologies over time, resulting in more predictable energy production throughout the system's lifespan.

Its competitive edge lies in the bifacial construction, enabling the module to utilize reflected light from the ground surface - a tangible benefit for ground-mounted installations, flat roofs, vertical configurations, or environments with high reflectivity (e.g., snow). Furthermore, the double glass increases mechanical and environmental resilience while supporting long-term parameter stability. The additional interconnection density in the 18BB wiring scheme promotes stable operation under partial shading and minimizes current path losses.

This is an excellent choice for utility-scale PV farms, commercial projects, and challenging installations - where long-term reliability and high yield matter just as much as catalog specifications.

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 -0.290 -0.290 Typical 2,165
Weight per kWp 53.5 52.9 Typical 7,434
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 · 4 caution
Best for

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

Not ideal for

Roofs where every square metre has to count and tight roof space.

Watch-outs
227.0 watts per square metre

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

22.70% module efficiency

Bottom 23% of the TOPCon 700-750 W segment, against a median of 23.00%.

What owners get
N-TOPCon technology with zero LID

Draco N-type cells feature zero light-induced degradation (LID), first-year degradation below 1.0%, and a linear power decline of just 0.4% per year over 30 years, delivering more predictable energy yield than older P-type PERC modules.

Bifacial dual-glass construction

Cell bifaciality exceeds 80%, and the module can gain up to an additional 30% energy from the rear side depending on ground albedo. The dual-glass design also improves sealing and PID resistance compared to standard glass-backsheet modules.

Long-standing BNEF Tier 1 listing

Phono Solar (founded in 2004) has been consistently listed on the Bloomberg NEF Tier 1 list for several years thanks to proven bankability strength, easing financing for commercial and utility-scale projects using this series.

30/15-year warranty above market standard

The manufacturer offers a 30-year linear power warranty and a 15-year product warranty, while most TOPCon modules in this segment (including some peer comparables) still offer the standard 25 years of power and 12 years of product coverage.

High power up to 710 Wp, on par with HJT leaders

Modules reach up to 710 Wp at up to 22.86% efficiency, matching the competing Heliene 132HC HJT series (710 Wp/22.86%) despite TOPCon's lower manufacturing cost relative to HJT.

Trade-offs
Efficiency slightly below segment leaders

Maximum efficiency of 22.86% is marginally lower than competing series Suntech Ultra X Pro Plus and Talesun TM8G66M (both 22.9% at the same 710 Wp power), a small but measurable gap on datasheet comparison.

Heavier and thicker dual-glass construction

The dual-glass build typical of bifacial modules in this class increases module weight compared to standard glass-backsheet panels, which may require reinforced mounting structures on roofs with limited load capacity.

Notes from the database
  • At 22.7% efficiency, this panel is on par with typical TOPCon 700-750W modules
  • 226.9 W/m² power density is 3.2 W/m² below TOPCon 700-750W median (230.2 W/m²) - requires larger installation area
  • At -0.29%/°C, hot weather performance is typical for TOPCon 700-750W panels
  • 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 40.58 V · 17.40 A Operating point at max power
Voc · Isc 48.62 V · 18.44 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 37.7 kg Typical Typical · median 38.0 kg
Cells 132 · 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 · 0.048 %/°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 616 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

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 705 Wp appear here. The rest cover the whole series.

30-year Linear Performance Warranty 30-year Linear Performance Warranty Whole series Power-Voltage (P-V) Curves Power-Voltage (P-V) Curves Whole series Current-Voltage (I-V) Curves Current-Voltage (I-V) Curves 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
Phono Solar PS705M13GFH-22/WNH 705 W 22.70% -0.290 37.7 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 -30 W, 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 -35 W, lighter, +2.1 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg -35 W, lighter, +2.1 pp
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg -35 W, lighter, +2.1 pp
NS-650MH-132 650 W 20.92% -0.290 38.7 kg -55 W, heavier, -1.8 pp
NS-655MH-132 655 W 21.08% -0.290 38.7 kg -50 W, heavier, -1.6 pp
NS-660MH-132 660 W 21.24% -0.290 38.7 kg -45 W, heavier, -1.5 pp
NS-665MH-132 665 W 21.40% -0.290 38.7 kg -40 W, heavier, -1.3 pp
NS-670MH-132 670 W 21.56% -0.290 38.7 kg -35 W, heavier, -1.1 pp
PS690M13GFH-22/WNH 690 W 22.21% -0.290 37.7 kg -15 W, -0.5 pp
PS695M13GFH-22/WNH 695 W 22.37% -0.290 37.7 kg -10 W, -0.3 pp
PS700M13GFH-22/WNH 700 W 22.53% -0.290 37.7 kg Very close match
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +100 W, cooler, +2.4 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 Draco 132-18BB-W-WG panel come with?
The Draco series (132-18BB-W-WG) comes with a 15-year product warranty and a 30-year linear power output warranty. Phono Solar guarantees first-year degradation below 1% and no more than 0.4% annual degradation thereafter. After 30 years, the module is warranted to retain at least 80% of its rated power. This ranks among the longer warranty standards available in the high-efficiency module segment on the European market.
What does 18BB mean on the Phono Solar Draco modules, and does it help with partial shading?
18BB refers to 18 busbars per cell. More busbars shorten the current path within each cell, reducing resistive losses and improving performance under partial shading. In practice, the module maintains more stable output when part of its surface is shaded by chimneys, antennas, or adjacent panel rows. This is particularly valuable in rooftop installations where eliminating shading entirely is difficult or impossible.
Does the bifacial design of the Phono Solar Draco module actually increase energy yield, and when does it make sense?
Yes, but the real benefit depends on the installation environment. Phono Solar rates up to 30% additional yield from the rear side under favorable ground albedo conditions. Best results come from ground-mounted systems with light or white surfaces, flat roofs with white membranes, vertical agri-PV setups, or snow-covered terrain. On a dark sloped roof the rear-side gain is negligible and should not be the primary purchasing argument.
Are the Phono Solar Draco 710 Wp panels designed for utility-scale solar farms or residential rooftop installations?
The Draco 132-18BB series, rated up to 710 Wp, is primarily designed for utility-scale and commercial PV projects. The large format (approx. 2384×1303 mm) and high unit power reduce module count and installation labor, lowering the overall system LCOE. Phono Solar holds Tier 1 status on the BloombergNEF list, which simplifies project bankability for lenders and insurers.
How do the Phono Solar Draco N-TOPCon modules perform in high summer temperatures?
N-TOPCon technology delivers a more favorable temperature coefficient than legacy PERC cells. The Draco 132-18BB modules feature a Pmax temperature coefficient of approximately -0.30%/°C or lower, meaning smaller power losses on hot days compared to typical PERC panels at around -0.35%/°C. For installations in warmer climates this translates into measurably higher energy yield during summer months, when temperatures regularly push module operating conditions well above STC.
Is Phono Solar a reputable manufacturer capable of honoring a 30-year power warranty?
Phono Solar is a Chinese manufacturer classified as Tier 1 by BloombergNEF, confirming financial stability and the capacity to honor long-term warranty commitments. The company has an established presence in European commercial markets, supplying modules to projects that require full bankability. The 15-year product warranty and 30-year linear power warranty are consistent with the standards offered by leading high-efficiency module manufacturers globally.
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