--- title: "S-Energy SL65-72BDJ-535R 535W Solar Panel - Specs & Review | ComparePV" description: "S-Energy SL65-72BDJ-535R 535W solar panel. Specs: 20.73% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/s-energy-sl65-72bdj-535r" updated: 2026-09-11 --- # S-Energy SL65-72BDJ-535R Middle of its segment, heavy for its output 706 panels in the segment PERC 500-550 W ## Identity - **Manufacturer:** S-Energy - **Model:** SL65-72BDJ-535R - **Series:** SL65-72BDJ - **Rated power:** 535 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 500-550 W (706 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 535 W | 535 W | Typical | | | Module efficiency | 20.73% | 20.90% | Typical | 10,701 | | Power density | 207.3 | 209.0 | Typical | 10,731 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 32.0 kg | 28.4 kg | Weak - bottom 13% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.73% | 20.90% | Typical | 10,701 | | Power density | 207.3 | 209.0 | Typical | 10,731 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 59.8 | 53.0 | Weak - bottom 13% | 12,279 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **59.8 kg per kWp** - Bottom 13% of the PERC 500-550 W segment, against a median of 53.0. - **Best for:** Commercial and utility-scale. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 535 W - **Efficiency:** 20.73 % - **Voltage at Pmax (Vmp):** 41.50 V - **Current at Pmax (Imp):** 12.90 A - **Open-circuit voltage (Voc):** 49.35 V - **Short-circuit current (Isc):** 13.78 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.280 %/degC - **Temperature coefficient of Isc:** 0.048 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2278 mm - **Width:** 1133 mm - **Thickness:** 30 mm - **Weight:** 32.0 kg - **Area:** 2.58 m2 - **Power density:** 207.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 85.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.45 % - **Output after 30 years:** 454 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10701 of 14005 | | Power density | 10731 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 12279 of 14005 | | Warranty | 21 of 14005 | ## About this series The S-Energy SL65-72BDJ series consists of advanced **bifacial dual-glass** modules that redefine performance standards in demanding environmental conditions. Thanks to the glass-glass construction, these panels effectively eliminate the problem of potential-induced degradation and provide **exceptional fire resistance**, making them an optimal choice for projects with increased fire safety requirements. The use of bifacial technology allows for efficient energy harvesting not only from direct solar radiation but also from light reflected from the ground, which realistically increases the total yield of the installation. This solution is designed for large-scale farms and commercial ground-mounted systems, where the priority is **maximizing the profitability of the investment** in the long term. The robust construction of the modules guarantees their high mechanical strength, which translates into a **minimized risk of micro-cracks** in the cells during many years of operation. Compared to the competition, this series stands out for its precise matching of components, which ensures stable operation even at high ambient temperatures. By choosing these panels, investors gain technological certainty and **excellent performance in low-light conditions**, which is key to optimizing the energy production profile in the Polish climate. ## Notable figures - At 20.7% efficiency, this panel is on par with typical \*\*PERC 500-550W\*\* modules - Power density of 207.3 W/m² matches the \*\*PERC 500-550W\*\* median - Temperature coefficient of -0.35%/°C matches the \*\*PERC 500-550W\*\* median - At 32.0 kg, this panel is 3.6 kg heavier than the \*\*PERC 500-550W\*\* median (28.4 kg) - more demanding for installation crews - 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces ## Questions ### What warranty comes with the S-Energy SL65-72BDJ solar panels? The SL65-72BDJ series carries a 12-year product warranty and a 30-year linear power warranty. S-Energy guarantees at least 84.95% of rated output power after 30 years of operation. This is one of the more generous power warranty schedules available in the commercial module segment, providing reliable energy yield forecasting across the full investment horizon. ### What does bifacial dual-glass technology mean in the SL65-72BDJ series, and does it actually increase energy yield? Bifacial dual-glass refers to a glass-glass construction with double-sided PERC cells. The front glass captures direct solar irradiance; the rear glass harvests light reflected from the ground surface (albedo effect). On ground-mount installations with a light-colored or snow-covered surface, the rear side can contribute 5–25% additional energy. The glass-glass build also eliminates PID degradation and significantly improves the module's fire resistance rating. ### How much does an S-Energy SL65-72BDJ panel weigh, and can it be installed on a rooftop? A single SL65-72BDJ module weighs 31.5 kg and measures 2278×1134×30 mm. The weight is higher than a standard framed monofacial module due to the dual-glass construction. The series is primarily designed for ground-mount systems and utility-scale PV plants where structural load is not a constraint. Rooftop installation is possible but requires a prior structural assessment by a licensed engineer. ### How do S-Energy SL65-72BDJ panels perform under low-light or overcast conditions? PERC technology combined with 144 half-cut cells and a low temperature coefficient of -0.35%/°C enables the SL65-72BDJ to perform well under overcast skies and diffuse irradiance. The half-cut cell layout also reduces internal resistive losses within the module. In practice, these panels deliver a favorable annual energy yield even under the intermittent sunshine typical of Central European climates. ### Do the S-Energy SL65-72BDJ panels have an elevated fire safety rating? Yes. The dual-glass construction removes the plastic backsheet, which is the primary combustible component in conventional framed modules. Glass-glass modules achieve a higher fire safety class, making them the preferred choice for projects with strict fire safety requirements, such as installations on public buildings or ground-mount farms located near forested areas. ### Is S-Energy a Tier 1 manufacturer, and how long has the company been on the market? S-Energy is a South Korean PV cell and module manufacturer headquartered in Seoul, operating since 2004. The company is not listed as Tier 1 by Bloomberg NEF, but it maintains its own production lines and R&D facilities in South Korea. The SL65-72BDJ series sits at the upper end of S-Energy's product portfolio and is targeted at commercial and utility-scale PV projects rather than the mass residential prosumer market. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/datasheet-sl65-72bdj-xxxr-530-550-231120-2023-en-ver-1-0-46a74bf2c472.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +4.3 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +4.1 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +4.1 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +4.0 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.9 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +3.8 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +3.8 pp | | [S-Energy SL65-72BDJ-525Z](https://comparepv.com/panel/s-energy-sl65-72bdj-525z) | 525 W | -10 W, -0.4 pp | | [S-Energy SL65-72BDJ-530R](https://comparepv.com/panel/s-energy-sl65-72bdj-530r) | 530 W | Very close match | | [S-Energy SL65-72BDJ-530Z](https://comparepv.com/panel/s-energy-sl65-72bdj-530z) | 530 W | -0.2 pp | | [S-Energy SE65-72BGJ-535S](https://comparepv.com/panel/s-energy-se65-72bgj-535s) | 535 W | Lighter, -5 yr warranty | | [S-Energy SL65-72BDJ-540R](https://comparepv.com/panel/s-energy-sl65-72bdj-540r) | 540 W | Very close match | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +115 W, cooler, +4.5 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +110 W, cooler, +4.3 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +105 W, cooler, +4.1 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +100 W, cooler, +3.9 pp | --- Source: https://comparepv.com/panel/s-energy-sl65-72bdj-535r Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.