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MY Solar MYM3144-405

405 Wp PERC
ComparePV verdict

Middle of its segment, needs the roof space

Rank 12,433 of 14,129
Compare panels Datasheet PDF
Power (Wp)
405
Typical for its class
Efficiency (%)
20.13
Weak · bottom 17%
Density (Wp/m²)
201.3
Weak · bottom 16%
Temp (%/°C)
-0.350
Typical · median -0.350
Weight (kg)
22.5
Typical · median 22.0 kg
Warranty (yrs)
25
Typical · median 25 yrs

MY Solar M3 series photovoltaic panels focus on maximizing energy yields through the use of Half-Cut cell technology, which effectively reduces resistance losses and improves module performance in partial shading conditions. This design addresses the problem of sudden performance drops in densely built-up areas, making this series an excellent choice for prosumer installations mounted on the roofs of single-family houses. The use of a reinforced anodized aluminum frame guarantees high resistance to snow and wind loads, which is crucial in the variable Polish climate. What sets them apart from the competition is primarily the low temperature power coefficient, thanks to which the modules lose significantly less energy during intense sunlight on hot days. The innovative cell surface structure allows for better capturing of diffused light, which extends the actual operating time of the system on cloudy days. The M3 series combines high efficiency with modern aesthetics, offering a durable and safe solution. It is an option for demanding investors who expect a quick return on investment while maintaining the highest standards of resistance to the PID degradation phenomenon and other negative external factors. These modules constitute a solid foundation for a modern micro-installation, guaranteeing predictable electricity production for many years.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.13% 20.60% Weak · bottom 17% 12,174
Power density 201.3 206.2 Weak · bottom 16% 12,165
Temperature coefficient -0.350 -0.350 Typical 10,489
Weight per kWp 55.6 53.0 Typical 9,982
Performance warranty 25 yrs 25 yrs Typical 9,912
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

4 positive · 5 caution
Best for

Residential, shaded-installations and hot-climate.

Not ideal for

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

Watch-outs
201.3 watts per square metre

Bottom 16% of the PERC 400-450 W segment, against a median of 206.2.

20.13% module efficiency

Bottom 17% of the PERC 400-450 W segment, against a median of 20.60%.

What owners get
Half-Cut cell technology

Half-cut cells reduce resistive losses and improve module performance under partial shading, which is relevant for dense single-family rooftop layouts and non-standard mounting angles.

Wide power range: 185-520 Wp

30 variants within a single series allow matching a module to small balcony installations as well as larger pitched or commercial roofs, without switching suppliers during design.

Reinforced anodized aluminum frame

The frame construction increases resistance to snow and wind loads, which matters for system design in Poland's variable climate with periodic heavy snowfall.

Low power temperature coefficient

Modules lose less power as cell temperature rises on hot days, translating into higher real-world energy yield during summer months compared to older-generation standard PERC panels.

Trade-offs
Lower efficiency than N-type peers

Maximum efficiency of 20.45% (PERC technology) is clearly below N-type TOPCon peer comparables at the same 520 Wp max power - Jinko Tiger Neo III reaches 24.06%, DAH Solar 23%, and Silfab Commercial NTC 21.9%. This means a larger installed area is required for comparable generated power.

Manufacturer not on the BNEF Tier 1 list

MY Solar is not listed as a BloombergNEF Tier 1 bankable manufacturer, which can complicate project financing where banks and insurers require this status as a lending condition.

Shorter product warranty than flagship lines

The M3 series carries a 10-12 year product warranty, while the same manufacturer's own N-type/HJT lines (e.g. MySolar GOLD HJT) offer 30-year product and power warranties as standard. This positions M3 as an entry-level, older-generation offering within the manufacturer's own portfolio.

Notes from the database
  • Efficiency of 20.1% matches the PERC 400-450W median
  • At 201.3 W/m², this panel generates 4.9 W/m² less per unit area than PERC 400-450W median (206.2 W/m²)
  • Temperature coefficient of -0.35%/°C matches the PERC 400-450W median
  • In the top 86% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 405 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.13 % Weak Segment median 20.60%
Vmpp · Impp 42.00 V · 9.65 A Operating point at max power
Voc · Isc 50.10 V · 10.48 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2008×1002×40 mm · 2.01 m² of roof
Weight 22.5 kg Typical Typical · median 22.0 kg
Cells 144 · PERC Monocrystalline
Coefficient Pmax -0.350 %/°C Typical median -0.350 of its segment
Coefficient Voc · Isc -0.290 · 0.048 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 10 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
Degradation 3.00 % First year

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
-0.350 %/°C against a segment median of -0.350
-

Alternatives

All MY Solar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
MY Solar MYM3144-405 405 W 20.13% -0.350 22.5 kg You are here
AIKO-455-MAH54Db 455 W 23.30% -0.260 24.0 kg +50 W, cooler, +3.2 pp
LR5-54HTH-455M 455 W 23.30% -0.290 20.8 kg +50 W, cooler, +3.2 pp
YL455CF54 e/2 455 W 23.30% -0.290 20.3 kg +50 W, cooler, +3.2 pp
ESM-455T 455 W 23.30% -0.310 21.0 kg +50 W, +3.2 pp, +5 yr warranty
SE5-54HBC-455W 455 W 23.30% -0.290 20.8 kg +50 W, cooler, +3.2 pp
JST-EDMH-(445-465)W-TD (455W class) 455 W 23.30% -0.300 20.5 kg +50 W, +3.2 pp, +5 yr warranty
LX-455M/182R-96+ GG 455 W 23.30% -0.260 23.5 kg +50 W, cooler, +3.2 pp
MYM3144-390 390 W 19.38% -0.350 22.5 kg -15 W, -0.8 pp
MYM3144-395 395 W 19.63% -0.350 22.5 kg -10 W, -0.5 pp
MYM3144-400 400 W 19.88% -0.350 22.5 kg -0.2 pp
MYM3144-410 410 W 20.38% -0.350 22.5 kg +0.2 pp
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg Cooler, +3.9 pp, +15 yr warranty
SPR-MAX7-470 470 W 23.70% -0.270 21.1 kg Cooler, +3.6 pp, +15 yr warranty
SPR-MAX7-465 465 W 23.50% -0.270 21.1 kg Cooler, +3.4 pp, +15 yr warranty
MS480NC-HJTPBFT 480 W 22.10% -0.260 23.0 kg +75 W, cooler, +2.0 pp
LG440QAC-A6 440 W 22.10% -0.290 20.5 kg +35 W, cooler, +2.0 pp

Found 141 panels of the same or similar size to this one, within ±10 mm. See them here Found 212 panels of the same or similar size to this one, within ±25 mm. See them here Found 329 panels of the same or similar size to this one, within ±50 mm. See them here Found 806 panels of the same or similar size to this one, within ±100 mm. See them here

About the M3 series series

6 answered

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

What warranty does the MY Solar M3 series come with?
The M3 series includes a 12-year product warranty covering material and manufacturing defects, plus a 25-year linear power output warranty. This means the manufacturer guarantees predictable module degradation over a quarter century, protecting your investment against sudden drops in energy yield and ensuring stable power production throughout the full system lifecycle.
What is Half-Cut PERC technology and why does it matter in the MY Solar M3 series?
Half-Cut technology splits each PERC cell into two halves, reducing internal resistance and minimizing heat losses. In practice, this delivers higher module efficiency and better resilience to partial shading from chimneys or dormers. MY Solar M3 modules rated up to 520 Wp leverage this technology to maximize annual energy yield even in densely built residential environments.
How do MY Solar M3 panels perform on hot, sunny days?
Thanks to a low temperature coefficient of power, the M3 series loses significantly less energy at high temperatures compared to standard modules. This is a key advantage in summer when intense irradiance causes cell overheating. M3 panels maintain higher efficiency on hot days, which meaningfully improves the overall annual energy yield of the entire prosumer installation.
Can MY Solar M3 panels handle Polish winters - snow loads and strong winds?
Yes. The reinforced anodized aluminum frame provides high mechanical resistance to snow loads and wind pressure, which is especially important in Poland's variable climate. The modules meet standard structural load ratings and operate reliably across many winter seasons without compromising their sealing integrity or frame structure.
Does the MY Solar M3 series generate energy on cloudy days and in diffuse light?
Yes. The innovative cell surface structure of the M3 series is optimized to capture diffuse light. The system operates effectively even under overcast conditions, extending real production hours compared to standard modules. This is particularly valuable in Poland, where the number of fully sunny days per year is relatively limited.
Are MY Solar M3 panels resistant to PID degradation, and does it matter when choosing an inverter?
Yes, the M3 series is engineered for high resistance to Potential Induced Degradation (PID). This is an important characteristic when pairing with transformerless inverters, where PID risk is elevated. PID resistance ensures stable, predictable energy production throughout the full 25-year power warranty period, regardless of the inverter model selected.
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