--- title: "S-Energy SL65-60MAJ-435Z 435W Solar Panel - Specs & Review | ComparePV" description: "S-Energy SL65-60MAJ-435Z 435W solar panel. Specs: 20.04% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/s-energy-sl65-60maj-435z" updated: 2026-09-11 --- # S-Energy SL65-60MAJ-435Z Middle of its segment, needs the roof space 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** S-Energy - **Model:** SL65-60MAJ-435Z - **Series:** SL65-60MAJ - **Rated power:** 435 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 435 W | 410 W | Strong - top 22% | | | Module efficiency | 20.04% | 20.60% | Weak - bottom 15% | 12,175 | | Power density | 200.4 | 206.2 | Weak - bottom 15% | 12,145 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight (kg) | 24.0 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.04% | 20.60% | Weak - bottom 15% | 12,175 | | Power density | 200.4 | 206.2 | Weak - bottom 15% | 12,145 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,419 | | Weight per kWp | 55.2 | 53.0 | Typical | 9,588 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Watch out for - **200.4 watts per square metre** - Bottom 15% of the PERC 400-450 W segment, against a median of 206.2. - **20.04% module efficiency** - Bottom 15% of the PERC 400-450 W segment, against a median of 20.60%. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 435 W - **Efficiency:** 20.04 % - **Voltage at Pmax (Vmp):** 33.90 V - **Current at Pmax (Imp):** 12.84 A - **Open-circuit voltage (Voc):** 40.80 V - **Short-circuit current (Isc):** 13.57 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.290 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 60 ### Physical - **Length:** 1914 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 24.0 kg - **Area:** 2.17 m2 - **Power density:** 200.4 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 357 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12175 of 14005 | | Power density | 12145 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 9588 of 14005 | | Warranty | 9798 of 14005 | ## About this series The S-Energy SL65-60MAJ series is designed for installations where high energy production from a limited area and stable operation in varying conditions are crucial. The modules utilize **monocrystalline PERC technology**, which translates to better utilization of radiation even in less sunny conditions - a significant advantage in the Polish climate. The use of **half-cut cells** helps minimize internal resistance losses and reduces the risk of power drops due to partial shading, such as from chimneys or trees. A key feature of the series is **positive power tolerance**, which ensures that the actual performance more closely matches the investor's expectations. The construction with **tempered glass and anodized frame** provides durability on the roof and resistance to typical operational loads. This makes it a good choice for single-family homes, small businesses, and projects where reliability and predictable performance over the years are important. ## Notable figures - Module efficiency of 20.0% is 0.6pp below average for \*\*PERC 400-450W\*\* panels (median: 20.6%) - Power density of 200.4 W/m² is 5.8 W/m² below \*\*PERC 400-450W\*\* median (206.2 W/m²) - needs more roof space - Temperature coefficient of -0.35%/°C matches the \*\*PERC 400-450W\*\* median - At 24.0 kg, this panel is 2.0 kg heavier than the \*\*PERC 400-450W\*\* median (22.0 kg) - more demanding for installation crews - #12175 for efficiency, #10419 for temperature performance out of 14005 panels ## Questions ### What warranty does the S-Energy SL65-60MAJ solar panel series come with? The SL65-60MAJ series comes with a 12-year product warranty and a 25-year linear power output warranty. The manufacturer guarantees a minimum performance level for a full quarter century. This is the standard warranty scope for residential and small commercial PV installations, allowing investors to plan energy yield well in advance with predictable financial outcomes. ### Does PERC technology in the S-Energy SL65-60MAJ series actually improve performance on cloudy days? Yes. PERC cells feature a passivation layer on the rear cell surface that reflects unabsorbed photons back into the silicon structure, improving conversion efficiency under diffuse or low-irradiance conditions. In climates with a high number of overcast days — such as Poland — this translates into a measurably higher annual energy yield compared to standard mono cells without PERC technology. ### How does the half-cut cell design in S-Energy SL65-60MAJ panels reduce shading losses? In half-cut technology, each cell is split in two, lowering internal resistance and resistive heat losses. The module is also divided into two independent electrical sub-strings — if a shadow from a chimney or tree covers the lower portion of the panel, the upper half continues operating at full power. This is especially valuable for rooftop installations where partial shading from architectural elements is unavoidable. ### What does positive power tolerance mean for S-Energy SL65-60MAJ modules and why does it matter? Positive power tolerance means every panel shipped from the factory meets or exceeds its nameplate rating — in this case up to 460 Wp. Installers and investors are not at risk of receiving an underperforming module. In practice, this enables more accurate annual yield forecasting and ensures the system delivers its designed output from day one, without unpleasant surprises during commissioning. ### Are S-Energy SL65-60MAJ panels monofacial — does the lack of bifacial technology matter? The SL65-60MAJ series is monofacial — it absorbs solar radiation exclusively through the front glass and does not feature bifacial technology. For typical pitched rooftop installations, the rear side of the module is shielded by the roof structure, making bifacial gain negligible. The absence of bifacial capability is therefore not a practical limitation for the most common residential and small commercial use cases. ### Is S-Energy a reputable manufacturer — where is it based and is it Tier 1 certified? S-Energy is a South Korean solar module manufacturer holding IEC certifications for its product lines. The brand does not currently appear on the Bloomberg NEF Tier 1 list, meaning it is a smaller market player compared to top-tier global manufacturers. Before purchasing the SL65-60MAJ series, it is advisable to confirm with the distributor that warranty service coverage is available in your country for the full warranty period. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/half-sl65-60maj-435-460z-220412-2022-en-ver-1-0-c109cf4fbc4c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +50 W, cooler, +4.3 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +50 W, cooler, +4.3 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +50 W, cooler, +4.3 pp | | [Gokin GK-5-54HG-485M](https://comparepv.com/panel/gokin-gk-5-54hg-485m) | 485 W | +50 W, cooler, +4.3 pp | | [Heckert Solar ZEUS 3.0+ 108 485WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-485wp) | 485 W | +50 W, cooler, +4.3 pp | | [S-Energy SL65-60MAJ-440Z](https://comparepv.com/panel/s-energy-sl65-60maj-440z) | 440 W | +0.2 pp | | [S-Energy SL65-60MAJ-445Z](https://comparepv.com/panel/s-energy-sl65-60maj-445z) | 445 W | +10 W, +0.5 pp | | [S-Energy SL65-60MAJ-450Z](https://comparepv.com/panel/s-energy-sl65-60maj-450z) | 450 W | +15 W, +0.7 pp | | [S-Energy SL65-60MAJ-455Z](https://comparepv.com/panel/s-energy-sl65-60maj-455z) | 455 W | +20 W, +0.9 pp | | [S-Energy SL65-60MAJ-460Z](https://comparepv.com/panel/s-energy-sl65-60maj-460z) | 460 W | +25 W, +1.2 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +125 W, cooler, +4.8 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +120 W, cooler, +4.6 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +115 W, cooler, +4.4 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +105 W, cooler, +4.4 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +105 W, cooler, +4.4 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +110 W, cooler, +4.2 pp | --- Source: https://comparepv.com/panel/s-energy-sl65-60maj-435z Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.