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Phono Solar PS555M6H-24/TH
Phono Solar Brand review

PS555M6H-24/TH

555 Wp PERC
ComparePV verdict

Strong in heat, short guarantee

Rank 7,695 of 14,129
Compare panels Datasheet PDF
Power (Wp)
555
Typical for its class
Efficiency (%)
21.48
Typical · median 21.29%
Density (Wp/m²)
214.8
Strong · top 20%
Temp (%/°C)
-0.330
Strong · top 7%
Weight (kg)
28.0
Typical · median 30.8 kg
Warranty (yrs)
25
Weak · bottom 24%

The Phono Solar Twinplus module series (HIGH EFFICIENCY MONO-PERC M6-10B-R) was designed to maximize energy yield where every square meter of roof space counts and ensure stable performance in varying conditions. The use of mono-PERC cells supports high efficiency in daily operation, while half-cut technology minimizes connection losses and improves tolerance to partial shading, which is often critical near chimneys, window frames, or installations on multiple rafters. In practice, this translates to more predictable energy production and a better self-consumption balance.

Additionally, multi-busbar technology aids in more efficient current collection from the cells and enhances reliability over the long term. The manufacturer also highlights PID resistance and an optimized electrical layout, which reduces the risk of hot-spot formation, a common issue under uneven sunlight exposure. This makes it an excellent choice for both residential and commercial installations where high yield, safe operation, and worry-free long-term performance are priorities.

Ranking

589 panels in the segment PERC 550-600 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.48% 21.29% Typical 8,217
Power density 214.8 212.9 Strong · top 20% 8,099
Temperature coefficient -0.330 -0.350 Strong · top 7% 8,613
Weight per kWp 50.5 52.7 Typical 3,834
Performance warranty 25 yrs 27 yrs Weak · bottom 24% 9,912
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

7 positive · 3 caution
Best for

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

Not ideal for

Owners who want a long output guarantee.

Strengths
-0.330 %/°C temperature coefficient

Top 7% of the PERC 550-600 W segment, against a median of -0.350. Ranked 8,613th in the whole database.

214.8 watts per square metre

Top 20% of the PERC 550-600 W segment, against a median of 212.9.

Watch-outs
25 year performance warranty

Bottom 24% of the PERC 550-600 W segment, against a median of 27 yrs.

What owners get
Tier-1 BNEF status since 2014

Phono Solar (founded 2004) has held Tier-1 status on the Bloomberg New Energy Finance list continuously since 2014, confirming financial stability and bankability - a key factor for projects financed by lending institutions.

High unit power up to 555 Wp

The series spans 400-555 Wp with up to 21.51% efficiency, placing it near the top of the M6 PERC segment - comparable to Boviet Solar VEGA (555 Wp, 21.3%) and Shinson S-Max (555 Wp, 21.48%).

Half-cut cells with multi-busbar

Half-cut cell technology reduces resistive losses at cell interconnections and improves partial-shading tolerance (e.g., near chimneys or dormers), while the multi-busbar layout improves current collection efficiency and long-term reliability.

PID resistance and reduced hot-spot risk

An optimized electrical layout combined with PID (potential-induced degradation) resistance lowers the risk of hot spots under uneven irradiance, contributing to more stable performance over the module's operating life.

25-year power warranty

A standard-for-PERC-generation 25-year linear power warranty and 12-year product warranty give investors a predictable return horizon, in line with typical market terms for Tier-1 panels of this vintage.

Trade-offs
Discontinued in 2024

The Twinplus M6-10B-R series was discontinued (released 2021, end of production 2024), meaning limited availability of warranty service, matching replacement modules, and constrained options for expanding an existing installation with identical specs.

PERC technology trails N-type generation

The 21.51% peak efficiency lags behind Jinko Solar's JS-PERC (21.7% at the same 555 Wp), and by 2026 the market is dominated by N-type TOPCon/HJT modules with better temperature coefficients and lower LID degradation, making this series technologically dated relative to current offerings.

Notes from the database
  • Efficiency of 21.5% matches the PERC 550-600W median
  • At 214.8 W/m² power density, roof space requirements are typical for PERC 550-600W panels
  • At -0.33%/°C, hot weather performance is typical for PERC 550-600W panels
  • At 28.0 kg, this panel is 2.8 kg lighter than PERC 550-600W median (30.8 kg) - easier handling during installation
  • In the top 58% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 555 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.48 % Typical Segment median 21.29%
Vmpp · Impp 41.64 V · 13.33 A Operating point at max power
Voc · Isc 49.69 V · 13.92 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2278×1134×35 mm · 2.58 m² of roof
Weight 28.0 kg Typical Typical · median 30.8 kg
Cells 144 · PERC Monocrystalline
Coefficient Pmax -0.330 %/°C Strong top 7% 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 25 years Weak bottom 24% · median 27 yrs
End-of-warranty output 84.8 % Equals 455 W guaranteed
Degradation 2.00 → 0.55 % 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 555 Wp appear here. The rest cover the whole series.

25-year Linear Performance Warranty 25-year Linear Performance Warranty 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
-

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
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Phono Solar PS555M6H-24/TH 555 W 21.48% -0.330 28.0 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, +3.5 pp, +5 yr warranty
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg Cooler, +3.3 pp, +5 yr warranty
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg -50 W, cooler, +3.2 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg -50 W, cooler, +3.2 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, +3.1 pp, +5 yr warranty
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg Cooler, lighter, +2.9 pp
PS535M8GF-24/TH 535 W 20.71% -0.330 32.0 kg Heavier, -0.8 pp, +5 yr warranty
PS540M8-24/TH 540 W 20.90% -0.350 28.0 kg -15 W, hotter, -0.6 pp
PS545M8-24/TH 545 W 21.10% -0.350 28.0 kg -10 W, hotter, -0.4 pp
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +95 W, cooler, +3.7 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +90 W, cooler, +3.5 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +85 W, cooler, +3.3 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +80 W, cooler, +3.1 pp
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg +75 W, cooler, +2.9 pp

Found 2327 panels of the same or similar size to this one, within ±10 mm. See them here Found 2369 panels of the same or similar size to this one, within ±25 mm. See them here Found 2383 panels of the same or similar size to this one, within ±50 mm. See them here Found 2548 panels of the same or similar size to this one, within ±100 mm. See them here

About the Twinplus Module Series (HIGH EFFICIENCY MONO-PERC M6-10B-R) 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 Twinplus (MONO-PERC M6-10B-R) series still available for purchase?
The Phono Solar Twinplus High Efficiency MONO-PERC M6-10B-R series has been discontinued and is no longer an actively produced product. Limited availability may still exist through secondary markets or distributors with remaining stock. If you need similar specifications, current Phono Solar lineups offer comparable mono-PERC modules with similar or higher output.
What warranties come with the Phono Solar Twinplus MONO-PERC M6-10B-R panels?
Phono Solar backed this series with a 12-year product warranty covering materials and workmanship, and a 25-year linear power output warranty guaranteeing the module retains a defined percentage of its rated wattage over time. As a BloombergNEF Tier 1 manufacturer, Phono Solar's warranty commitments carry stronger long-term credibility than non-rated brands.
What does half-cut cell technology do in the Twinplus MONO-PERC M6-10B-R and does it help with shading?
Half-cut technology splits each PERC cell into two smaller halves, reducing resistive losses and splitting the module into two independent electrical circuits. When a chimney, dormer, or antenna shades part of the module, the unshaded half continues generating power normally. This translates to measurably better daily energy yield on rooftops with obstructions or suboptimal orientation.
What is the maximum power output of the Twinplus MONO-PERC M6-10B-R and what installations is it suited for?
The top power variant in this series reaches 555 Wp under standard test conditions (STC). The module suits both residential pitched-roof installs and commercial flat-roof systems. Higher per-panel wattage means fewer modules are needed to hit a target system size, which lowers BoS costs and reduces the required roof area.
How do the Phono Solar Twinplus MONO-PERC M6-10B-R panels perform in cold weather and on overcast days?
Mono-PERC cells outperform older polycrystalline technology in diffuse light conditions. The power temperature coefficient for this series is approximately -0.35%/°C, meaning output can exceed the nameplate rating on cold, sunny days. The multi-busbar design also improves current collection at low irradiance angles, benefiting energy harvest during early morning and late afternoon hours.
Are the Phono Solar Twinplus MONO-PERC M6-10B-R panels resistant to PID degradation?
Yes, Phono Solar declared PID (Potential Induced Degradation) resistance for this series, which is important in high-voltage DC systems operating in humid climates where PID can accelerate long-term power loss. The module's optimized cell circuit design also aimed to minimize hot-spot risk caused by uneven irradiance or partial shading across cells.
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