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S-Energy Brand review

SL65-78TDP-605R

605 Wp TOPCon Bifacial 70%
ComparePV verdict

Middle of its segment, needs the roof space

Rank 4,607 of 14,005
Compare panels Datasheet PDF
Power (Wp)
605
Weak · bottom 15%
Efficiency (%)
21.66
Weak · bottom 3%
Density (Wp/m²)
216.6
Weak · bottom 2%
Temp (%/°C)
-0.300
Weak · bottom 19%
Weight (kg)
34.5
Weak · 1.8 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The S-Energy SL65-78TDP solar panel series is an advanced solution designed for maximum efficiency in demanding industrial installations and large-scale solar farms. The cell technology used in them allows for stable energy yields even under lower sunlight conditions, which is crucial in variable climates. These modules stand out with high resistance to the PID effect, which guarantees long-term protection against power degradation and full investment stability for decades. Thanks to a reinforced frame construction, this series offers above-average mechanical strength against snow and strong wind loads, effectively eliminating the risk of micro-cracks in harsh weather conditions. It is an ideal choice for investors seeking components with an excellent price-to-quality ratio, which perform best where reliability and low unit cost of produced energy are what matters most. Unlike many standard market solutions, S-Energy SL65-78TDP is characterized by optimized operation at high temperatures, which significantly minimizes transmission losses on the hottest days of the year. This is a solid foundation for demanding commercial projects, providing a predictable return on investment thanks to precise craftsmanship and rigorous quality tests conducted at every production stage. The applied multi-busbar technology additionally improves electron flow, increasing the overall module efficiency and ensuring its longevity.

Ranking

1,086 panels in the segment TOPCon 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.66% 22.80% Weak · bottom 3% 7,615
Power density 216.6 227.7 Weak · bottom 2% 7,580
Temperature coefficient -0.300 -0.290 Weak · bottom 19% 6,093
Weight per kWp 57.0 53.1 Weak · bottom 3% 11,021
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 · 3 caution
Best for

Utility-scale, commercial and hot-climate.

Not ideal for

Roofs where every square metre has to count, tight roof space and weight-limited structures.

Watch-outs
216.6 watts per square metre

Bottom 2% of the TOPCon 600-650 W segment, against a median of 227.7. Ranked 7,580th in the whole database.

21.66% module efficiency

Bottom 3% of the TOPCon 600-650 W segment, against a median of 22.80%. Ranked 7,615th in the whole database.

57.0 kg per kWp

Bottom 3% of the TOPCon 600-650 W segment, against a median of 53.1. Ranked 11,021st in the whole database.

Notes from the database
  • Efficiency of 21.7% is 1.1pp below the TOPCon 600-650W median (22.8%)
  • Power density of 216.6 W/m² is 11.1 W/m² below TOPCon 600-650W median (227.7 W/m²) - needs more roof space
  • At -0.30%/°C, hot weather performance is typical for TOPCon 600-650W panels
  • At 34.5 kg, this panel is 1.8 kg heavier than the TOPCon 600-650W median (32.7 kg) - more demanding for installation crews
  • Bifacial design (70% factor) captures reflected light - adds 4-10% yield on ground-mount or white roof

Specifications

Open datasheet PDF
Nominal power (Pmax) 605 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.66 % Weak Segment median 22.80%
Vmpp · Impp 45.80 V · 13.22 A Operating point at max power
Voc · Isc 54.80 V · 13.97 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2465×1133×30 mm · 2.79 m² of roof
Weight 34.5 kg Weak Weak · 1.8 kg above median
Cells 78 · TOPCon Monocrystalline
Bifaciality 70 % Rear output as a share of front
Coefficient Pmax -0.300 %/°C Weak bottom 19% of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 529 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by S-Energy in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 605 Wp appear here. The rest cover the whole series.

Standard Module Linear Power Warranty Standard Module Linear Power Warranty Whole series Irradiance coefficient Irradiance coefficient Whole series Temperature coefficient Temperature coefficient Whole series

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
-0.300 %/°C against a segment median of -0.290
-
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 SL65-78TDP-605R 605 W 21.66% -0.300 34.5 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +45 W, lighter, +3.5 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +40 W, lighter, +3.3 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg -45 W, lighter, +3.1 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg Cooler, lighter, +3.1 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg -50 W, lighter, +2.9 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg Cooler, lighter, +2.9 pp
SE65-78BGJ-575S 575 W 20.50% -0.350 31.0 kg Hotter, -1.2 pp, -5 yr warranty
SL65-78BGJ-580S 580 W 20.70% -0.350 31.0 kg Hotter, -1.0 pp, -5 yr warranty
SL65-78BGJ-585S 585 W 20.90% -0.350 31.0 kg Hotter, -0.8 pp, -5 yr warranty
SL65-78BGJ-590S 590 W 21.10% -0.350 31.0 kg Hotter, lighter, -5 yr warranty
SL65-78BGJ-595S 595 W 21.30% -0.350 31.0 kg Hotter, lighter, -5 yr warranty
SL65-78BGJ-600S 600 W 21.50% -0.350 31.0 kg Hotter, lighter, -5 yr warranty
SL65-78TDP-610R 610 W 21.84% -0.300 34.5 kg Very close match
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +75 W, lighter, +3.5 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +70 W, lighter, +3.3 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +95 W, cooler, +3.3 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

5 answered
What cell technology does the S-Energy SL65-78TDP series use and why does it matter?
The SL65-78TDP series is built on TOPCon (Tunnel Oxide Passivated Contact) technology combined with a bifacial design. The passivating tunnel oxide layer minimizes carrier recombination, pushing module efficiency to approximately 22.4%. In practice this means a lower temperature coefficient of Pmax (-0.30%/°C) and higher energy yields both under full irradiance and in diffuse light conditions common in Central European climates.
What warranty does the S-Energy SL65-78TDP solar panel come with?
S-Energy provides a 12-year product warranty covering material and workmanship defects, plus a 30-year linear power warranty guaranteeing at least 87.4% of rated power after three decades. For investors this translates into predictable energy yields and a stable return on investment over the full financing horizon, which is especially critical in utility-scale projects where bankability depends on long-term performance guarantees.
Is the S-Energy SL65-78TDP a bifacial panel and how much extra energy can I expect?
Yes, the SL65-78TDP series features a bifacial design that captures irradiance from both the front and rear surfaces. The rear glass collects diffuse and ground-reflected light, delivering a 5–15% bifacial gain depending on the ground albedo — white roofing membrane, light gravel, or snow coverage produce the highest gains. Ground-mounted utility farms with elevated racking systems benefit the most from this effect.
Are the S-Energy SL65-78TDP 625 W panels suitable for large-scale solar farms?
Yes, this series was engineered for industrial and utility-scale applications. At 625 Wp per module, fewer panels, cables, and mounting points are needed to reach a target farm capacity, directly reducing BoS costs and improving LCOE. Strong PID resistance, a reinforced frame rated for high snow and wind loads, and a 30-year linear power warranty make this series an attractive choice for project developers seeking long-term bankability.
How do the S-Energy SL65-78TDP panels perform during summer heat?
The TOPCon cell architecture delivers a temperature coefficient of Pmax of -0.30%/°C, meaning the panel loses only 3% of its rated output for every 10°C rise in cell temperature. Standard PERC modules typically rate at -0.35%/°C, so the SL65-78TDP holds a clear advantage on the hottest days of the year. The practical result is higher daily energy production during peak summer, which directly improves the seasonal economics of a solar farm.
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