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Phono Solar PS400M8GF-18/VH
Phono Solar Brand review

PS400M8GF-18/VH

400 Wp PERC Bifacial 70%
ComparePV verdict

Strong in heat, no clear weak spot

Rank 11,683 of 14,129
Compare panels Datasheet PDF
Power (Wp)
400
Weak · bottom 9%
Efficiency (%)
20.48
Typical · median 20.60%
Density (Wp/m²)
204.8
Typical · median 206.2
Temp (%/°C)
-0.330
Strong · top 10%
Weight (kg)
21.0
Typical · median 22.0 kg
Warranty (yrs)
30
Strong · top 17%

The Phono Solar Bifacial Twinplus / HIGH EFFICIENCY MONO-PERC BM6-10B-G (400-420W) series was designed with the goal of maximizing energy gains anywhere square meterage matters. Its key advantage is the bifacial construction, which allows utilizing reflected light from the ground-truly supporting higher energy production compared to traditional monofacial panels, especially on light-colored roofs, ground, membranes, and east-west installations.

The application of mono PERC cells combined with half-cut technology helps minimize module losses and improves performance under partial shading. This is an excellent choice for rooftops with obstructions (chimneys, vents) and for installations operating under variable lighting conditions.

Against many competitive solutions, the series also stands out for its PID resistance and dual glass, translating to stable parameters and greater operational certainty in the long term. Ideal for homes, businesses, and commercial projects where high energy output from the same surface area is a priority.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.48% 20.60% Typical 11,548
Power density 204.8 206.2 Typical 11,450
Temperature coefficient -0.330 -0.350 Strong · top 10% 8,613
Weight per kWp 52.5 53.0 Typical 6,090
Performance warranty 30 yrs 25 yrs Strong · top 17% 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

7 positive · 2 caution
Best for

Residential, commercial and shaded-installations.

Strengths
-0.330 %/°C temperature coefficient

Top 10% of the PERC 400-450 W segment, against a median of -0.350.

30 year performance warranty

Top 17% of the PERC 400-450 W segment, against a median of 25 yrs.

What owners get
Bifacial design with dual-glass build

Bifacial PERC cells in a dual-glass housing capture reflected albedo light, delivering a real yield gain over monofacial modules on light-colored roofs, membranes, or ground-mount systems. The dual-glass construction also improves mechanical rigidity and long-term degradation resistance.

Half-cut PERC reduces losses

Half-cut cell technology combined with mono PERC lowers resistive losses and improves shading tolerance, which matters on roofs with obstructions such as chimneys or vents and in installations with irregular geometry.

Tier-1 BNEF status and PVEL top ranking

Phono Solar has held Tier 1 status on the Bloomberg NEF list continuously since 2014, and in 2025 its modules were named a Top Performer in Kiwa PVEL's PV Module Reliability Scorecard. The manufacturer is backed by the Sumec/Sinomach group, a Fortune Global 500 company, supporting strong project bankability.

30-year linear power warranty

The linear power warranty covers 30 years, exceeding the typical 25-year industry standard for PERC modules. This extra 5-year horizon gives investors longer certainty on energy yield without added cost.

Efficiency at the top of the PERC segment

Efficiency up to 21.51% is on par with competing mono PERC series such as GCL-M10/54H (21.5%) and RedSolar P series M10-PERC Ultralight (21.52%), placing the series among the leaders of this cell generation.

Trade-offs
Production discontinued (2025)

The series launched in 2021 and was discontinued in 2025. This limits the availability of replacement units for damaged panels within an installation and may complicate servicing over the 30-year power warranty period.

PERC trails newer N-type cells

Efficiency up to 21.51% is lower than the competing Jinko JS-PERC SERIES (21.7%) and noticeably behind next-generation TOPCon/HJT modules reaching 22-23%+. PERC technology is approaching its physical efficiency ceiling, making this series a less future-proof choice where roof area is constrained.

Notes from the database
  • At 20.5% efficiency, this panel is on par with typical PERC 400-450W modules
  • At 204.8 W/m² power density, roof space requirements are typical for PERC 400-450W panels
  • Temperature coefficient of -0.33%/°C matches the PERC 400-450W median
  • At 21.0 kg, weight matches the PERC 400-450W median
  • 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces

Specifications

Open datasheet PDF
Nominal power (Pmax) 400 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.48 % Typical Segment median 20.60%
Vmpp · Impp 30.51 V · 13.11 A Operating point at max power
Voc · Isc 36.63 V · 13.78 A Sizes the string length
Dimensions 1722×1134×30 mm · 1.95 m² of roof
Weight 21.0 kg Typical Typical · median 22.0 kg
Cells 108 · PERC Monocrystalline
Bifaciality 70 % Rear output as a share of front
Coefficient Pmax -0.330 %/°C Strong top 10% of its segment
Coefficient Voc · Isc -0.260 · 0.042 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Strong top 17% · median 25 yrs
End-of-warranty output 85.0 % Equals 340 W guaranteed
Degradation 2.00 → 0.45 % 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 400 Wp appear here. The rest cover the whole series.

30-year Linear Performance Warranty (Guaranteed Power vs Year) 30-year Linear Performance Warranty (Guaranteed Power vs Year) Whole series P-V Curves (Power vs Voltage at Various Irradiance Levels) P-V Curves (Power vs Voltage at Various Irradiance Levels) 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
-0.330 %/°C against a segment median of -0.350
-
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 PS400M8GF-18/VH 400 W 20.48% -0.330 21.0 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg +40 W, cooler, +2.6 pp
JST-EDMH-(445-465)W-TD (450W class) 450 W 23.05% -0.300 20.5 kg +50 W, cooler, +2.6 pp
QNN182-HG450-54 450 W 23.04% -0.290 24.0 kg +50 W, cooler, +2.6 pp
HY440-N108BDD 450 W 23.04% -0.300 23.5 kg +50 W, cooler, +2.6 pp
NLBK-27-450 450 W 23.04% -0.300 22.9 kg +50 W, cooler, +2.6 pp
RS41-450NBG-E3 450 W 23.04% -0.290 24.5 kg +50 W, cooler, +2.6 pp
PS405M8GF-18/VH 405 W 20.74% -0.330 21.0 kg +0.3 pp
PS410M8GF-18/VH 410 W 21.00% -0.330 21.0 kg +10 W, +0.5 pp
PS415M8GF-18/VH 415 W 21.25% -0.330 21.0 kg +15 W, +0.8 pp
PS420M8GF-18/VH 420 W 21.51% -0.330 21.0 kg +20 W, +1.0 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +110 W, cooler, +4.5 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +95 W, cooler, +4.3 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +105 W, cooler, +4.2 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg +105 W, cooler, +4.2 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +90 W, cooler, +4.0 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +100 W, cooler, +4.0 pp

Found 1797 panels of the same or similar size to this one, within ±10 mm. See them here Found 1928 panels of the same or similar size to this one, within ±25 mm. See them here Found 3413 panels of the same or similar size to this one, within ±50 mm. See them here Found 4007 panels of the same or similar size to this one, within ±100 mm. See them here

About the Bifacial Twinplus / HIGH EFFICIENCY MONO-PERC BM6-10B-G (400–420W) series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

Is the Phono Solar Bifacial Twinplus BM6-10B-G series still available for purchase?
The BM6-10B-G series has been discontinued and is no longer actively offered by Phono Solar. The manufacturer has transitioned to updated TwinPlus lines such as the TwinPlus X. Some distributors may still carry stock, but for new installations a currently produced replacement model is generally recommended.
What warranty does Phono Solar offer on the BM6-10B-G panels?
Phono Solar provides a 12-year product warranty covering manufacturing defects and mechanical damage, plus a 30-year linear power warranty. After 30 years, the module is guaranteed to retain at least approximately 84.95% of its rated output. This is one of the longer power warranty periods available for PERC-based modules.
What real-world benefit does bifacial technology provide in the BM6-10B-G series?
Bifacial modules harvest light on both the front and rear surfaces, capturing albedo - radiation reflected from the ground or roof substrate. On bright surfaces such as white TPO membranes, gravel, or light-colored concrete, the rear-side energy gain typically ranges from a few percent to over 20%. The effect is maximized with adequate clearance beneath the modules and a highly reflective background.
Are Phono Solar BM6-10B-G panels suitable for roofs with chimneys or vents?
Yes. The half-cut cell layout (108 cells) splits the module into two independent electrical circuits, so partial shading from a chimney or vent causes a smaller power drop than in a standard 60-cell panel. Mono PERC cell technology also improves performance under diffuse light conditions, which are common on partially shaded rooftops or overcast days.
Why does the BM6-10B-G series use dual glass instead of a standard backsheet?
The glass-glass construction offers superior resistance to moisture ingress, UV exposure, and mechanical stress compared to conventional polymer backsheets. Dual-glass modules also exhibit lower LID and PID-related degradation, resulting in more stable output over the full system lifetime. They are particularly well-suited for ground-mount systems, commercial installations, and high-humidity climates.
What is the actual efficiency of the Phono Solar BM6-10B-G modules and how much energy can I expect?
The BM6-10B-G series is rated at 400 to 420 W under Standard Test Conditions (STC). The 420 W variant typically delivers module efficiency in the 20-21% range, which is above average for PERC modules of this generation. Real-world output depends on tilt angle, azimuth orientation, shading, and module operating temperature.
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