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S-Energy Brand review

SL65-72MAJ-540Z

540 Wp Monocrystalline
ComparePV verdict

Middle of its segment, short guarantee

Rank 8,915 of 14,005
Compare panels Datasheet PDF
Power (Wp)
540
Typical for its class
Efficiency (%)
20.90
Weak · bottom 15%
Density (Wp/m²)
209.0
Weak · bottom 15%
Temp (%/°C)
-0.350
Weak · bottom 12%
Weight (kg)
28.0
Typical · median 27.5 kg
Warranty (yrs)
25
Weak · bottom 11%

The S-Energy SL65-72MAJ series is designed for installations where maximizing energy production from a given area and stable operation under real roof and ground conditions are crucial. The modules utilize monocrystalline cells in a half-cut configuration, which minimizes internal losses and helps maintain performance even with partial shading from chimneys, antennas, or trees. The use of high-current architecture and modern connection solutions makes it easy to build efficient module chains in commercial projects, where simple configurations and predictable operating parameters are key.

In practice, the SL65-72MAJ solves the common problem of decreased production in hot weather - thanks to favorable temperature characteristics, the modules minimize power loss at high temperatures. This makes it a good choice for companies, PV farms, and larger prosumer installations that require robust resistance to weather conditions and long-term profitability, without paying extra for marketing extras offered by competitors.

Ranking

8,019 panels in the 440-640 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 20.90% 22.27% Weak · bottom 15% 10,072
Power density 209.0 222.6 Weak · bottom 15% 10,100
Temperature coefficient -0.350 -0.300 Weak · bottom 12% 10,419
Weight per kWp 51.9 52.7 Typical 5,230
Performance warranty 25 yrs 30 yrs Weak · bottom 11% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Commercial, shaded-installations, utility-scale and hot-climate.

Not ideal for

Owners who want a long output guarantee, hot climates and tight roof space.

Watch-outs
25 year performance warranty

Bottom 11% of the 440-640 W band, against a median of 30 yrs.

-0.350 %/°C temperature coefficient

Bottom 12% of the 440-640 W band, against a median of -0.300.

20.90% module efficiency

Bottom 15% of the 440-640 W band, against a median of 22.27%.

Notes from the database
  • At 20.9% efficiency, this panel is 0.9pp below the database median of 21.8%
  • 209.0 W/m² power density is 9.1 W/m² below database median (218.1 W/m²) - requires larger installation area
  • At -0.35%/°C, loses 0.05pp more power per degree than database median (-0.30%/°C)
  • At 28.0 kg, this panel is 1.5 kg heavier than the database median (26.5 kg) - more demanding for installation crews
  • #10072 for efficiency, #10419 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 540 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.90 % Weak Segment median 22.27%
Vmpp · Impp 41.40 V · 13.05 A Operating point at max power
Voc · Isc 49.70 V · 13.78 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 27.5 kg
Cells 144 Monocrystalline
Coefficient Pmax -0.350 %/°C Weak bottom 12% 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 Weak bottom 11% · median 30 yrs
End-of-warranty output 84.8 % Equals 443 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 -0.300
-

Alternatives

All S-Energy panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
S-Energy SL65-72MAJ-540Z 540 W 20.90% -0.350 28.0 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, +4.1 pp, +5 yr warranty
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, +3.9 pp, +5 yr warranty
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, +3.8 pp, +5 yr warranty
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, +3.7 pp, +5 yr warranty
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, +3.6 pp, +5 yr warranty
SL65-72BDJ-525Z 525 W 20.32% -0.350 31.5 kg Heavier, -0.6 pp, +5 yr warranty
SL65-72BDJ-530R 530 W 20.53% -0.350 32.0 kg Heavier, -0.4 pp, +5 yr warranty
SL65-72BDJ-530Z 530 W 20.52% -0.350 31.5 kg Heavier, -0.4 pp, +5 yr warranty
SE65-72BGJ-535S 535 W 20.70% -0.350 28.5 kg Very close match
SL65-72BDJ-535R 535 W 20.73% -0.350 32.0 kg Heavier, +5 yr warranty
SL65-72BDJ-540R 540 W 20.92% -0.350 32.0 kg Heavier, +5 yr warranty
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

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 2547 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 SL65-72MAJ come with?
S-Energy provides a 12-year product warranty covering manufacturing defects and module integrity, along with a 25-year linear power output warranty. Over that 25-year period, the panel must maintain output within the degradation schedule specified in the datasheet. S-Energy is a South Korean manufacturer with its own production facilities, making warranty claims enforceable through established channels.
How do the half-cut cells in the S-Energy SL65-72MAJ affect performance under partial shading?
Half-cut cell technology splits each cell in two, resulting in 144 smaller cells instead of 72 full-size ones. When shading from a chimney or antenna hits part of the module, only a portion of the electrical circuit is affected while the rest continues generating power. In real-world conditions this means lower production losses during morning and afternoon hours when some shading is unavoidable.
Does the S-Energy SL65-72MAJ lose significant power output on hot days?
The SL65-72MAJ series has a power temperature coefficient of approximately -0.35%/°C, which is a favorable figure for monocrystalline modules in this power class. At a cell temperature of 70°C — typical on a hot summer day — the power loss is around 17.5% rather than the 20–21% seen in older technologies. This results in measurably higher annual yield in warmer climates and during summer peak periods.
How heavy is the S-Energy SL65-72MAJ and can it be installed on a pitched roof?
The module weighs approximately 28 kg with dimensions of 2,278 × 1,134 × 35 mm — standard sizing for commercial-class 550 W modules. Pitched-roof installation is possible, but the weight and size require at least a two-person crew and a prior structural load assessment of the roof. The series performs equally well in ground-mounted systems, where dimensions and weight are less of a constraint.
Is the S-Energy SL65-72MAJ a bifacial solar panel?
No, the SL65-72MAJ series is a monofacial module, meaning energy is generated from the front surface only. Bifacial technology would allow additional harvest from light reflected off the ground, but requires a suitable reflective surface and adequate ground clearance. The SL65-72MAJ is optimized for installations where predictable output parameters and lower BoS costs are the priority, without the additional mounting infrastructure that bifacial modules demand.
Is the S-Energy SL65-72MAJ better suited for residential or commercial and utility-scale projects?
With a peak output of 550 W, a maximum system voltage of 1,500 V, and a high-current architecture designed for efficient string configuration, the SL65-72MAJ is primarily a commercial and utility-scale module. It is best suited for large prosumer systems above roughly 30 kWp, agri-PV projects, and ground-mounted solar farms. For smaller residential rooftops, lower-wattage variants within the same S-Energy family may be a better fit.
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