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S-Energy Brand review

SL65-54TEP-425R

425 Wp TOPCon Bifacial 70%
ComparePV verdict

Solid all-round for its segment

Rank 10,343 of 14,005
Compare panels Datasheet PDF
Power (Wp)
425
Typical for its class
Efficiency (%)
21.78
Typical · median 22.00%
Density (Wp/m²)
217.8
Typical · median 220.2
Temp (%/°C)
-0.300
Typical · median -0.290
Weight (kg)
23.5
Typical · median 22.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The S-Energy SL65-54TEP series has been designed for high energy production in situations where every square meter of roof space counts. The use of N-type cells in TOPCon technology helps to minimize typical power losses during operation and to better utilize light in challenging conditions, such as cloudy weather or cooler days. An additional advantage is the bifacial design, which can also generate energy from reflected radiation - a real benefit on sunny roofs, gravel substrates, and ground-mounted installations.

In practice, the SL65-54TEP solves a common problem for investors: how to increase energy yield without expanding the mounting surface. The series is suitable for both modern residential and commercial installations, where predictability and resistance to external conditions are important. It stands out from the competition due to its long, comprehensive power warranty and module configuration optimized for stable operation, which simplifies installation design and improves profitability over the long term.

Ranking

1,218 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.78% 22.00% Typical 7,206
Power density 217.8 220.2 Typical 7,044
Temperature coefficient -0.300 -0.290 Typical 6,093
Weight per kWp 55.3 51.4 Typical 9,746
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 · 0 caution
Best for

Residential and commercial.

Notes from the database
  • Efficiency of 21.8% matches the TOPCon 400-450W median
  • Power density of 217.8 W/m² matches the TOPCon 400-450W median
  • Temperature coefficient of -0.30%/°C matches the TOPCon 400-450W median
  • At 23.5 kg, this panel is 1.5 kg heavier than the TOPCon 400-450W median (22.0 kg) - more demanding for installation crews
  • 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces

Specifications

Open datasheet PDF
Nominal power (Pmax) 425 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.78 % Typical Segment median 22.00%
Vmpp · Impp 32.15 V · 13.22 A Operating point at max power
Voc · Isc 38.21 V · 14.30 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1133×30 mm · 1.95 m² of roof
Weight 23.5 kg Typical Typical · median 22.0 kg
Cells 54 · TOPCon Monocrystalline
Bifaciality 70 % Rear output as a share of front
Coefficient Pmax -0.300 %/°C Typical median -0.290 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 371 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 425 Wp appear here. The rest cover the whole series.

30-year Linear Performance Warranty 30-year Linear Performance Warranty 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 SL65-54TEP-425R 425 W 21.78% -0.300 23.5 kg You are here
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg +50 W, +2.2 pp, +10 yr warranty
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +40 W, lighter, +2.0 pp
JAT54S40-475/LR 475 W 23.80% -0.260 19.3 kg +50 W, lighter, +2.0 pp
TWMNH-48HW475 475 W 23.80% -0.280 23.7 kg +50 W, cooler, +2.0 pp
CHSM48RN(DG)/F-BH-475 475 W 23.80% -0.290 24.5 kg +50 W, cooler, +2.0 pp
AIKO-A475-MCE54Mw 475 W 23.80% -0.260 21.0 kg +50 W, cooler, +2.0 pp
AIKO-A475-MAH54Mw 475 W 23.80% -0.260 21.5 kg +50 W, cooler, +2.0 pp
SL65-54TDP-410R 410 W 21.01% -0.300 23.5 kg -15 W, -0.8 pp
SL65-54TDP-415R 415 W 21.27% -0.300 23.5 kg -10 W, -0.5 pp
SL65-54TDP-420R 420 W 21.52% -0.300 23.5 kg -0.3 pp
SL65-54TDP-430R 430 W 22.04% -0.300 23.5 kg +0.3 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +85 W, cooler, +3.2 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +70 W, cooler, +3.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +80 W, cooler, +2.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +65 W, cooler, +2.7 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +75 W, cooler, +2.7 pp

Found 1783 panels of the same or similar size to this one, within ±10 mm. See them here Found 1914 panels of the same or similar size to this one, within ±25 mm. See them here Found 3392 panels of the same or similar size to this one, within ±50 mm. See them here Found 3970 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 SL65-54TEP series come with?
The SL65-54TEP series includes a 12-year product warranty covering manufacturing defects and materials, along with a 30-year power output warranty. This means the manufacturer guarantees a defined performance level over three decades, providing predictable ROI. A 30-year power warranty is among the longer coverage packages available in this panel class.
Does TOPCon technology in the SL65-54TEP actually deliver higher energy yield?
Yes. The N-type TOPCon cells used in the SL65-54TEP have a low power temperature coefficient of -0.30%/°C, resulting in smaller losses on hot days compared to standard PERC modules (-0.34 to -0.36%/°C). The panel also achieves approximately 22% efficiency under STC, allowing more power output from the same roof area.
Will the S-Energy SL65-54TEP perform well in overcast conditions or during winter?
Yes. N-type TOPCon cells demonstrate better spectral response under diffuse light than PERC cells, reducing production losses on cloudy days. The low temperature coefficient (-0.30%/°C) also means that during colder months, when module temperatures stay low, the panel operates close to its rated parameters — a significant advantage in temperate climates.
What does bifacial mean for the SL65-54TEP and when does it pay off?
A bifacial module has active cells on both sides, harvesting energy from direct sunlight and from light reflected off the ground surface. The SL65-54TEP carries a minimum bifaciality of 80%, which on high-albedo surfaces such as gravel, concrete, or light-colored membranes can add several percentage points to annual yield. Ground-mounted systems and flat rooftop installations benefit the most.
What are the dimensions and weight of the S-Energy SL65-54TEP — will it fit on a standard pitched roof?
Each SL65-54TEP module measures 1,722 x 1,134 x 30 mm and weighs approximately 24.7 kg. This is a standard form factor for 430 W class panels, compatible with common racking systems for pitched roofs. The weight is slightly higher than lighter modules on the market, so it's worth checking roof load capacity on older structures before purchase.
Is S-Energy a reputable manufacturer — can I trust the quality of these panels?
S-Energy is a South Korean solar panel manufacturer with a long track record, holding IEC certifications and supplying modules to Australian, European, and Asian markets. The company is not currently listed as Tier 1 by Bloomberg NEF; however, its products including the SL65-54TEP series meet standard quality audit requirements. Before purchasing, verify warranty claim handling terms with your local distributor.
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