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S-Energy Brand review

SL65-72BGJ-550S

550 Wp PERC Bifacial 500%
ComparePV verdict

Middle of its segment, short guarantee

Rank 8,069 of 14,005
Compare panels Datasheet PDF
Power (Wp)
550
Weak · bottom 15%
Efficiency (%)
21.30
Typical · median 21.29%
Density (Wp/m²)
212.9
Typical · median 212.9
Temp (%/°C)
-0.350
Typical · median -0.350
Weight (kg)
28.5
Typical · median 30.8 kg
Warranty (yrs)
25
Weak · bottom 24%

The S-Energy SL65-72BGJ series is designed for installations where high energy production is crucial, even under less-than-ideal conditions. The use of a bifacial construction allows for better utilization of light reflected from the ground, which effectively supports energy generation on flat roofs, ground-mounted structures, and PV farms. The monocrystalline modules with half-cut cell technology minimize losses at connections and improve performance in partially shaded conditions, such as those caused by chimneys, trees, or railings.

Compared to many competing panels, the SL65-72BGJ stands out due to its rigid glass-glass construction, which better withstands mechanical loads and material aging over the long term. An additional advantage is low temperature dependence on power output, which ensures stable performance during the summer months. This makes it a sensible choice for investors seeking durability, predictable energy yields, and modules for both prosumer and commercial projects.

Ranking

589 panels in the segment PERC 550-600 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.30% 21.29% Typical 8,519
Power density 212.9 212.9 Typical 8,497
Temperature coefficient -0.350 -0.350 Typical 10,419
Weight per kWp 51.8 52.7 Typical 5,204
Performance warranty 25 yrs 27 yrs Weak · bottom 24% 9,798
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

Owners who want a long output guarantee.

Watch-outs
25 year performance warranty

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

Notes from the database
  • At 21.3% efficiency, this panel is on par with typical PERC 550-600W modules
  • At 212.9 W/m² power density, roof space requirements are typical for PERC 550-600W panels
  • At -0.35%/°C, hot weather performance is typical for PERC 550-600W panels
  • Weight of 28.5 kg (2.3 kg below PERC 550-600W median of 30.8 kg) allows easier transport and roof mounting
  • #8519 for efficiency, #10419 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 550 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.30 % Typical Segment median 21.29%
Vmpp · Impp 41.90 V · 13.14 A Operating point at max power
Voc · Isc 50.00 V · 13.91 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 28.5 kg Typical Typical · median 30.8 kg
Cells 144 · PERC Monocrystalline
Bifaciality 500 % Rear output as a share of front
Coefficient Pmax -0.350 %/°C Typical median -0.350 of its segment
Coefficient Voc · Isc -0.270 · 0.040 %/°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 85.0 % Equals 453 W guaranteed
Degradation 2.00 → 0.54 % 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
-
With bifacial gain
-

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
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Alternatives

All S-Energy panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
S-Energy SL65-72BGJ-550S 550 W 21.30% -0.350 28.5 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, lighter, +3.7 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg Cooler, +3.5 pp, +5 yr warranty
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, lighter, +3.4 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, +3.3 pp, +5 yr warranty
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg -50 W, cooler, +3.2 pp
SL65-72BDJ-525Z 525 W 20.32% -0.350 31.5 kg Heavier, -1.0 pp, +5 yr warranty
SL65-72BDJ-530R 530 W 20.53% -0.350 32.0 kg Heavier, -0.8 pp, +5 yr warranty
SL65-72BDJ-530Z 530 W 20.52% -0.350 31.5 kg Heavier, -0.8 pp, +5 yr warranty
SE65-72BGJ-535S 535 W 20.70% -0.350 28.5 kg -15 W, -0.6 pp
SL65-72BDJ-535R 535 W 20.73% -0.350 32.0 kg Heavier, -0.6 pp, +5 yr warranty
SL65-72BDJ-540R 540 W 20.92% -0.350 32.0 kg Heavier, -0.4 pp, +5 yr warranty
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +100 W, cooler, +3.9 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +95 W, cooler, +3.7 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +90 W, cooler, +3.5 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +85 W, cooler, +3.3 pp
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg +80 W, cooler, +3.1 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
Are S-Energy SL65-72BGJ panels suitable for ground-mounted systems and utility-scale PV farms?
Yes, the SL65-72BGJ series is well-suited for ground-mounted systems and solar farms. The bifacial construction captures light reflected from the ground surface, which under optimal conditions — bright albedo surface and correct tilt angle — can boost real-world yield by several percentage points compared to a monofacial module. With a peak power of up to 550 Wp, the series also allows higher installed capacity on the same footprint.
What warranty does the S-Energy SL65-72BGJ solar panel come with?
S-Energy provides a 12-year product warranty covering material and workmanship defects, plus a 25-year linear power warranty guaranteeing at least 80.7% of nominal output after 25 years. It is worth noting that S-Energy is not currently listed on the BNEF Tier-1 index, which is a relevant factor when assessing the manufacturer's ability to honor a long-term power warranty over a 25-year period.
What does bifacial mean on the SL65-72BGJ, and is it worth it on a standard pitched roof?
Bifacial means the panel generates electricity from both the front and rear sides. On a pitched roof where the back of the module sits close to the roof surface, rear-side gain is minimal — typically below 5%. The bifacial benefit is most significant on flat roofs with a light-colored membrane, ground-mounted systems with high-albedo ground cover, or elevated tracker installations. On a conventional pitched roof, the primary advantage of this model is the durability of the glass-glass construction rather than the bifacial effect itself.
How do the half-cut PERC cells in the SL65-72BGJ help with partial shading from chimneys or trees?
Half-cut cells reduce internal resistance and electrically isolate shaded cell segments from the rest of the module. In practice, shading from a chimney, railing, or tree branches causes a smaller power drop across the entire panel compared to full-size cells. PERC technology further improves minority carrier collection efficiency. Together, these features deliver better performance under partial shading conditions typical of urban and residential rooftop installations.
Does the glass-glass design of the S-Energy SL65-72BGJ translate to a longer service life?
Yes. Replacing the rear backsheet with tempered glass significantly increases the module's mechanical resistance to snow loads, wind, and hail, while also limiting moisture ingress and laminate degradation. The result is slower power degradation and a more predictable output curve over the full 25-year warranty period. The panel weighs approximately 31.5 kg — heavier than a backsheet equivalent — so mounting structures must be engineered accordingly.
Is S-Energy a reputable manufacturer and is its 25-year power warranty reliable?
S-Energy is a South Korean manufacturer headquartered in Seongnam, Gyeonggi-do, operating since 2001 with roots in Samsung's PV division. The company runs its own factory in South Korea with an annual production capacity of approximately 500 MW. It is not currently listed on the BNEF Tier-1 index, so buyers should apply additional due diligence when evaluating the long-term enforceability of its 25-year power warranty. For mid-scale residential and commercial projects it represents a competitive price-to-quality option.
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