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S-Energy Brand review

SL65-60MAJ-435Z

435 Wp PERC
ComparePV verdict

Middle of its segment, needs the roof space

Rank 11,840 of 14,005
Compare panels Datasheet PDF
Power (Wp)
435
Strong · top 22%
Efficiency (%)
20.04
Weak · bottom 15%
Density (Wp/m²)
200.4
Weak · bottom 15%
Temp (%/°C)
-0.350
Typical · median -0.350
Weight (kg)
24.0
Typical · median 22.0 kg
Warranty (yrs)
25
Typical · median 25 yrs

The S-Energy SL65-60MAJ series is designed for installations where high energy production from a limited area and stable operation in varying conditions are crucial. The modules utilize monocrystalline PERC technology, which translates to better utilization of radiation even in less sunny conditions - a significant advantage in the Polish climate. The use of half-cut cells helps minimize internal resistance losses and reduces the risk of power drops due to partial shading, such as from chimneys or trees.

A key feature of the series is positive power tolerance, which ensures that the actual performance more closely matches the investor's expectations. The construction with tempered glass and anodized frame provides durability on the roof and resistance to typical operational loads. This makes it a good choice for single-family homes, small businesses, and projects where reliability and predictable performance over the years are important.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.04% 20.60% Weak · bottom 15% 12,175
Power density 200.4 206.2 Weak · bottom 15% 12,145
Temperature coefficient -0.350 -0.350 Typical 10,419
Weight per kWp 55.2 53.0 Typical 9,588
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 2 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

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

Watch-outs
200.4 watts per square metre

Bottom 15% of the PERC 400-450 W segment, against a median of 206.2.

20.04% module efficiency

Bottom 15% of the PERC 400-450 W segment, against a median of 20.60%.

Notes from the database
  • Module efficiency of 20.0% is 0.6pp below average for PERC 400-450W panels (median: 20.6%)
  • Power density of 200.4 W/m² is 5.8 W/m² below PERC 400-450W median (206.2 W/m²) - needs more roof space
  • Temperature coefficient of -0.35%/°C matches the PERC 400-450W median
  • At 24.0 kg, this panel is 2.0 kg heavier than the PERC 400-450W median (22.0 kg) - more demanding for installation crews
  • #12175 for efficiency, #10419 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 435 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.04 % Weak Segment median 20.60%
Vmpp · Impp 33.90 V · 12.84 A Operating point at max power
Voc · Isc 40.80 V · 13.57 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1914×1134×30 mm · 2.17 m² of roof
Weight 24.0 kg Typical Typical · median 22.0 kg
Cells 60 · PERC Monocrystalline
Coefficient Pmax -0.350 %/°C Typical median -0.350 of its segment
Coefficient Voc · Isc -0.290 · 0.050 %/°C
NOCT 44 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 84.8 % Equals 357 W guaranteed
Degradation 2.00 → 0.55 % 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
-0.350 %/°C against a segment median of -0.350
-

Alternatives

All S-Energy panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
S-Energy SL65-60MAJ-435Z 435 W 20.04% -0.350 24.0 kg You are here
JAT54S40-485/LR 485 W 24.30% -0.260 19.3 kg +50 W, cooler, +4.3 pp
AIKO-A485-MCE54Mw 485 W 24.30% -0.260 21.0 kg +50 W, cooler, +4.3 pp
AIKO-A485-MAH54Mw 485 W 24.30% -0.260 21.5 kg +50 W, cooler, +4.3 pp
GK-5-54HG-485M 485 W 24.30% -0.260 21.0 kg +50 W, cooler, +4.3 pp
ZEUS 3.0+ 108 485WP 485 W 24.30% -0.260 24.2 kg +50 W, cooler, +4.3 pp
SL65-60MAJ-440Z 440 W 20.27% -0.350 24.0 kg +0.2 pp
SL65-60MAJ-445Z 445 W 20.50% -0.350 24.0 kg +10 W, +0.5 pp
SL65-60MAJ-450Z 450 W 20.73% -0.350 24.0 kg +15 W, +0.7 pp
SL65-60MAJ-455Z 455 W 20.96% -0.350 24.0 kg +20 W, +0.9 pp
SL65-60MAJ-460Z 460 W 21.19% -0.350 24.0 kg +25 W, +1.2 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +125 W, cooler, +4.8 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +120 W, cooler, +4.6 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +115 W, cooler, +4.4 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +105 W, cooler, +4.4 pp
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +105 W, cooler, +4.4 pp
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg +110 W, cooler, +4.2 pp

Found 486 panels of the same or similar size to this one, within ±10 mm. See them here Found 762 panels of the same or similar size to this one, within ±25 mm. See them here Found 1277 panels of the same or similar size to this one, within ±50 mm. See them here Found 1469 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty does the S-Energy SL65-60MAJ solar panel series come with?
The SL65-60MAJ series comes with a 12-year product warranty and a 25-year linear power output warranty. The manufacturer guarantees a minimum performance level for a full quarter century. This is the standard warranty scope for residential and small commercial PV installations, allowing investors to plan energy yield well in advance with predictable financial outcomes.
Does PERC technology in the S-Energy SL65-60MAJ series actually improve performance on cloudy days?
Yes. PERC cells feature a passivation layer on the rear cell surface that reflects unabsorbed photons back into the silicon structure, improving conversion efficiency under diffuse or low-irradiance conditions. In climates with a high number of overcast days — such as Poland — this translates into a measurably higher annual energy yield compared to standard mono cells without PERC technology.
How does the half-cut cell design in S-Energy SL65-60MAJ panels reduce shading losses?
In half-cut technology, each cell is split in two, lowering internal resistance and resistive heat losses. The module is also divided into two independent electrical sub-strings — if a shadow from a chimney or tree covers the lower portion of the panel, the upper half continues operating at full power. This is especially valuable for rooftop installations where partial shading from architectural elements is unavoidable.
What does positive power tolerance mean for S-Energy SL65-60MAJ modules and why does it matter?
Positive power tolerance means every panel shipped from the factory meets or exceeds its nameplate rating — in this case up to 460 Wp. Installers and investors are not at risk of receiving an underperforming module. In practice, this enables more accurate annual yield forecasting and ensures the system delivers its designed output from day one, without unpleasant surprises during commissioning.
Are S-Energy SL65-60MAJ panels monofacial — does the lack of bifacial technology matter?
The SL65-60MAJ series is monofacial — it absorbs solar radiation exclusively through the front glass and does not feature bifacial technology. For typical pitched rooftop installations, the rear side of the module is shielded by the roof structure, making bifacial gain negligible. The absence of bifacial capability is therefore not a practical limitation for the most common residential and small commercial use cases.
Is S-Energy a reputable manufacturer — where is it based and is it Tier 1 certified?
S-Energy is a South Korean solar module manufacturer holding IEC certifications for its product lines. The brand does not currently appear on the Bloomberg NEF Tier 1 list, meaning it is a smaller market player compared to top-tier global manufacturers. Before purchasing the SL65-60MAJ series, it is advisable to confirm with the distributor that warranty service coverage is available in your country for the full warranty period.
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