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S-Energy Brand review

SE65-78BGJ-585S

585 Wp Monocrystalline Bifacial 500%
ComparePV verdict

Middle of its segment, short guarantee

Rank 7,222 of 14,005
Compare panels Datasheet PDF
Power (Wp)
585
Typical for its class
Efficiency (%)
20.90
Weak · bottom 13%
Density (Wp/m²)
209.3
Weak · bottom 14%
Temp (%/°C)
-0.350
Weak · bottom 11%
Weight (kg)
31.0
Typical · median 31.0 kg
Warranty (yrs)
25
Weak · bottom 11%

The S-Energy SE65-78BGJ series are bifacial modules with a glass-glass construction, designed to maximize energy generation not only from direct sunlight, but also from reflected light. This allows them to effectively utilize typical Polish conditions - bright facades, substrates with light gravel, or snow in winter - which can realistically support production. The use of monocrystalline cells in a modern, large-format layout promotes stable operation and high surface efficiency, making it easier to design high-power installations in limited spaces.

The SE65-78BGJ also stands out for its weather resistance and durable construction, which is valued in installations exposed to wind loads and intensive use. It is a good choice for PV farms, warehouse roofs, industrial buildings, and carports, where energy yield, reliability, and long-term stability are more important than the module price alone.

Ranking

6,547 panels in the 485-685 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 20.90% 22.26% Weak · bottom 13% 10,072
Power density 209.3 222.6 Weak · bottom 14% 9,998
Temperature coefficient -0.350 -0.300 Weak · bottom 11% 10,419
Weight per kWp 53.0 52.8 Typical 6,697
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 and utility-scale.

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 485-685 W band, against a median of 30 yrs.

-0.350 %/°C temperature coefficient

Bottom 11% of the 485-685 W band, against a median of -0.300.

20.90% module efficiency

Bottom 13% of the 485-685 W band, against a median of 22.26%.

Notes from the database
  • Module efficiency of 20.9% is 0.9pp below average for database panels (median: 21.8%)
  • Power density of 209.3 W/m² is 8.8 W/m² below database median (218.1 W/m²) - needs more roof space
  • Temperature coefficient of -0.35%/°C is 0.05pp worse than database median (-0.30%/°C) - higher losses in summer heat
  • Weight of 31.0 kg is 4.5 kg above database median (26.5 kg) - verify structural support
  • #10072 for efficiency, #10419 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 585 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.90 % Weak Segment median 22.26%
Vmpp · Impp 45.50 V · 12.87 A Operating point at max power
Voc · Isc 53.70 V · 13.63 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2465×1134×40 mm · 2.80 m² of roof
Weight 31.0 kg Typical Typical · median 31.0 kg
Cells 156 Monocrystalline
Bifaciality 500 % Rear output as a share of front
Coefficient Pmax -0.350 %/°C Weak bottom 11% 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 11% · median 30 yrs
End-of-warranty output 85.0 % Equals 482 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 -0.300
-
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 SE65-78BGJ-585S 585 W 20.90% -0.350 31.0 kg You are here
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg Cooler, lighter, +3.9 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, lighter, +3.7 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +50 W, cooler, +3.7 pp
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg Cooler, +3.5 pp, +5 yr warranty
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg Cooler, lighter, +3.5 pp
SE65-78BGJ-575S 575 W 20.50% -0.350 31.0 kg -10 W, -0.4 pp
SL65-78BGJ-580S 580 W 20.70% -0.350 31.0 kg Very close match
SL65-78BGJ-590S 590 W 21.10% -0.350 31.0 kg +0.2 pp
SL65-78BGJ-595S 595 W 21.30% -0.350 31.0 kg +10 W, +0.4 pp
SL65-78BGJ-600S 600 W 21.50% -0.350 31.0 kg +15 W, +0.6 pp
SL65-78TDP-605R 605 W 21.66% -0.300 34.5 kg Cooler, +0.8 pp, +5 yr warranty
SL65-78TDP-610R 610 W 21.84% -0.300 34.5 kg Cooler, +0.9 pp, +5 yr warranty
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +95 W, cooler, +4.3 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +90 W, cooler, +4.1 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +115 W, cooler, +4.1 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +110 W, cooler, +4.0 pp

Found 616 panels of the same or similar size to this one, within ±10 mm. See them here Found 616 panels of the same or similar size to this one, within ±25 mm. See them here Found 616 panels of the same or similar size to this one, within ±50 mm. See them here Found 1813 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Do S-Energy SE65-78BGJ panels generate power only from the front side, or from the rear as well?
The SE65-78BGJ series uses bifacial glass-glass construction, meaning the rear glass is transparent and the back surface of the cells also generates electricity. In practice, on installations with high-albedo surfaces such as white gravel, concrete, or snow, bifacial operation can increase energy yield by several to over ten percent compared to a conventional single-sided module.
What warranty comes with the S-Energy SE65-78BGJ modules?
The manufacturer provides a 12-year product warranty covering workmanship and material defects, plus a 25-year linear power output warranty. The power warranty guarantees the module will retain at least a specified percentage of its rated output after 25 years of operation, giving system owners predictable performance throughout the full project lifetime.
What types of installations are the 585 Wp S-Energy SE65-78BGJ modules designed for?
At a peak power of 585 Wp, the SE65-78BGJ is aimed at commercial and industrial-scale projects: utility and ground-mount solar farms, industrial and warehouse rooftops, and carport structures. The high per-module power rating allows large system capacities to be achieved in limited footprints, which is particularly valuable for systems from several dozen kilowatts upward.
How does the glass-glass construction of the SE65-78BGJ differ from a conventional backsheet module?
Standard modules use a polymer backsheet, whereas the SE65-78BGJ replaces it with a tempered glass layer. This provides greater mechanical strength, superior moisture protection, and higher certified wind and snow load ratings. Glass-glass construction is also more resistant to PID degradation and delivers more stable long-term performance in the variable climate conditions typical of Central Europe.
Is S-Energy a Tier 1 manufacturer, and can its modules be trusted for larger investments?
S-Energy is a South Korean manufacturer with extensive experience in the PV industry, though it is not currently listed on the Bloomberg NEF Tier 1 bankability ranking. This does not imply poor quality — the company holds recognized certifications (IEC, MCS) and supplies modules for commercial installations worldwide. For larger projects, it is advisable to verify the manufacturer's current financial standing and confirm the warranty service process available in your market.
Is the S-Energy SE65-78BGJ series still in production and available to purchase?
Yes, the SE65-78BGJ series is currently in production and has not been discontinued. Modules are available through PV equipment distributors. Before placing a larger order, it is worth confirming stock availability and lead times with your supplier, especially when planning solar farms with extended construction schedules.
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