--- title: "S-Energy SL65-54TEP-425R 425W Solar Panel - Specs & Review | ComparePV" description: "S-Energy SL65-54TEP-425R 425W solar panel. Specs: 21.78% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/s-energy-sl65-54tep-425r" updated: 2026-09-11 --- # S-Energy SL65-54TEP-425R Solid all-round for its segment 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** S-Energy - **Model:** SL65-54TEP-425R - **Series:** SL65-54TEP - **Rated power:** 425 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 425 W | 435 W | Typical | | | 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 (kg) | 23.5 kg | 22.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | 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 | - **Best for:** Residential and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 425 W - **Efficiency:** 21.78 % - **Voltage at Pmax (Vmp):** 32.15 V - **Current at Pmax (Imp):** 13.22 A - **Open-circuit voltage (Voc):** 38.21 V - **Short-circuit current (Isc):** 14.30 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 54 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 1722 mm - **Width:** 1133 mm - **Thickness:** 30 mm - **Weight:** 23.5 kg - **Area:** 1.95 m2 - **Power density:** 217.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 371 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7206 of 14005 | | Power density | 7044 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 9746 of 14005 | | Warranty | 21 of 14005 | ## About this series 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. ## Notable figures - 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 ## Questions ### 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. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/datasheet-sl65-54tep-xxxr-410-430r-231120-2023-en-ver-1-0-ae4dc0b07c72.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | +50 W, +2.2 pp, +10 yr warranty | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +40 W, lighter, +2.0 pp | | [JA Solar JAT54S40-475/LR](https://comparepv.com/panel/ja-solar-jat54s40-475-lr) | 475 W | +50 W, lighter, +2.0 pp | | [Tongwei TWMNH-48HW475](https://comparepv.com/panel/tongwei-solar-twmnh-48hw475) | 475 W | +50 W, cooler, +2.0 pp | | [Astronergy CHSM48RN(DG)/F-BH-475](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm48rn-dg-f-bh-475) | 475 W | +50 W, cooler, +2.0 pp | | [AIKO AIKO-A475-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a475-mce54mw) | 475 W | +50 W, cooler, +2.0 pp | | [AIKO AIKO-A475-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a475-mah54mw) | 475 W | +50 W, cooler, +2.0 pp | | [S-Energy SL65-54TDP-410R](https://comparepv.com/panel/s-energy-sl65-54tdp-410r) | 410 W | -15 W, -0.8 pp | | [S-Energy SL65-54TDP-415R](https://comparepv.com/panel/s-energy-sl65-54tdp-415r) | 415 W | -10 W, -0.5 pp | | [S-Energy SL65-54TDP-420R](https://comparepv.com/panel/s-energy-sl65-54tdp-420r) | 420 W | -0.3 pp | | [S-Energy SL65-54TDP-430R](https://comparepv.com/panel/s-energy-sl65-54tdp-430r) | 430 W | +0.3 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +85 W, cooler, +3.2 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +70 W, cooler, +3.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +80 W, cooler, +2.9 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +65 W, cooler, +2.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +75 W, cooler, +2.7 pp | --- Source: https://comparepv.com/panel/s-energy-sl65-54tep-425r Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.