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Selfa Brand review

SV144M.5.1-540

540 Wp PERC
ComparePV verdict

Middle of its segment, weak in heat

Rank 7,131 of 14,005
Compare panels Datasheet PDF
Power (Wp)
540
Typical for its class
Efficiency (%)
20.90
Typical · median 20.90%
Density (Wp/m²)
208.9
Typical · median 209.0
Temp (%/°C)
-0.360
Weak · bottom 9%
Weight (kg)
29.1
Typical · median 28.4 kg
Warranty (yrs)
30
Typical · median 30 yrs

The SV144M.5.1 series consists of monocrystalline PREMIUM modules designed and tested at the Polish R&D center of Selfa GE S.A. in Szczecin, giving the manufacturer tight quality control at every production stage. The panel is built on PERC cells with half-cut technology, reducing resistive losses and handling partial shading better than modules with full-size cells. The 10 busbar structure improves the reliability of electrical connections and lowers the risk of cell microcracks. The module stands out with its SELF-C self-cleaning coating, which helps dirt and rainwater run off the surface, keeping performance high even with limited access for maintenance. The design is PID free, meaning it resists potential-induced degradation, and the reinforced frame delivers strong resistance to wind, snow, and hail loads. Thanks to an exclusively positive power tolerance, installers can be confident that real-world output will never fall short of the rated values. The series works equally well on residential rooftop installations and larger commercial systems, where long-term reliability and nationwide service support matter most, backed by a 30-year linear power warranty and a 15-year product warranty.

Ranking

706 panels in the segment PERC 500-550 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.90% 20.90% Typical 10,072
Power density 208.9 209.0 Typical 10,202
Temperature coefficient -0.360 -0.350 Weak · bottom 9% 12,345
Weight per kWp 53.9 53.0 Typical 8,017
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 1 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

Hot climates.

Watch-outs
-0.360 %/°C temperature coefficient

Bottom 9% of the PERC 500-550 W segment, against a median of -0.350. Ranked 12,345th in the whole database.

Notes from the database
  • Efficiency of 20.9% matches the PERC 500-550W median
  • At 208.9 W/m² power density, roof space requirements are typical for PERC 500-550W panels
  • Temperature coefficient of -0.36%/°C matches the PERC 500-550W median
  • Ranked #10072 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 540 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.90 % Typical Segment median 20.90%
Vmpp · Impp 41.75 V · 12.94 A Operating point at max power
Voc · Isc 49.54 V · 13.89 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2279×1134×35 mm · 2.58 m² of roof
Weight 29.1 kg Typical Typical · median 28.4 kg
Cells 144 · PERC Monocrystalline
Coefficient Pmax -0.360 %/°C Weak bottom 9% of its segment
Coefficient Voc · Isc -0.300 · 0.060 %/°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 91.8 % Equals 496 W guaranteed
Degradation 0.00 → 0.28 % First year, then annual

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
-0.360 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Selfa SV144M.5.1-540 540 W 20.90% -0.360 29.1 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, lighter, +4.1 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +3.9 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg Cooler, lighter, +3.9 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, lighter, +3.8 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, lighter, +3.7 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, lighter, +3.6 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, lighter, +3.6 pp
SV144M.5.3-545 545 W 21.10% -0.360 29.0 kg +0.2 pp
SV144M.5.3-550 550 W 21.30% -0.360 29.0 kg +10 W, +0.4 pp
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +110 W, cooler, +4.3 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +105 W, cooler, +4.1 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +100 W, cooler, +3.9 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +95 W, cooler, +3.7 pp
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg +90 W, cooler, +3.5 pp

Found 2326 panels of the same or similar size to this one, within ±10 mm. See them here Found 2368 panels of the same or similar size to this one, within ±25 mm. See them here Found 2382 panels of the same or similar size to this one, within ±50 mm. See them here Found 2542 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the Selfa SV144M.5.1 series still available for purchase?
The SV144M.5.1 series has been discontinued from Selfa's current production lineup and replaced by newer models. Panels may still be available from distributors as remaining stock, so it's worth checking current availability with a local dealer. The manufacturer's warranties (30 years on power, 15 years on product) remain valid for modules already purchased and installed.
What is the maximum power output of the Selfa SV144M.5.1 panel and how many panels does a typical installation need?
Modules in the SV144M.5.1 series reach a maximum power output of up to 540 Wp. For a typical residential system of 5-6 kWp, around 9-11 panels are usually needed, depending on the specific power variant within the series. Thanks to a positive-only power tolerance, actual system performance will not fall below the values assumed in the design.
How do the PERC half-cut cells in the Selfa SV144M.5.1 differ from standard full-size cells?
Half-cut PERC cells are cut in half, which reduces resistive losses and improves heat dissipation compared to full-size cells. This design makes the panel more resilient to partial shading, for example from chimneys or antennas, since shading on one half of a cell has a smaller impact on the overall module output.
Are Selfa SV144M.5.1 panels suitable for roofs with limited access for cleaning?
Yes, these modules feature a SELF-C self-cleaning coating that helps rainwater carry away dust and dirt from the panel surface. This keeps the installation running at high efficiency even without regular maintenance, which is especially useful for hard-to-reach pitched roofs or low-slope roof sections.
What warranty comes with Selfa SV144M.5.1 panels and what does it cover?
The manufacturer provides a 15-year product warranty covering material and workmanship defects, plus a 30-year linear power warranty guaranteeing sustained module performance over time. The panels are designed and tested at Selfa GE S.A.'s R&D center in Szczecin, Poland, with warranty service available throughout the country.
Is the Selfa SV144M.5.1 construction resistant to PID degradation and harsh weather conditions?
Yes, the modules are fully PID free, meaning they resist potential-induced degradation, which causes efficiency loss over time in some panels. A reinforced frame additionally provides high mechanical resistance to wind, snow, and hail loads, making the series suitable for both residential rooftops and larger commercial installations.
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