--- title: "S-Energy SL65-72MAJ-525Z 525W Solar Panel - Specs & Review | ComparePV" description: "S-Energy SL65-72MAJ-525Z 525W solar panel. Specs: 20.32% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/s-energy-sl65-72maj-525z" updated: 2026-09-11 --- # S-Energy SL65-72MAJ-525Z Middle of its segment, needs the roof space 8,358 panels in the 425-625 W band, all technologies ## Identity - **Manufacturer:** S-Energy - **Model:** SL65-72MAJ-525Z - **Series:** SL65-72MAJ - **Rated power:** 525 W - **Cell technology:** Monocrystalline ## How it compares Compared against 425-625 W band, all technologies (8358 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 525 W | 505 W | Typical | | | Module efficiency | 20.32% | 22.07% | Weak - bottom 5% | 11,739 | | Power density | 203.2 | 220.7 | Weak - bottom 4% | 11,731 | | Temperature coefficient | -0.350 | -0.300 | Weak - bottom 12% | 10,419 | | Weight (kg) | 28.0 kg | 26.9 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 11% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.32% | 22.07% | Weak - bottom 5% | 11,739 | | Power density | 203.2 | 220.7 | Weak - bottom 4% | 11,731 | | Temperature coefficient | -0.350 | -0.300 | Weak - bottom 12% | 10,419 | | Weight per kWp | 53.3 | 52.7 | Typical | 7,178 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 11% | 9,798 | ### Watch out for - **203.2 watts per square metre** - Bottom 4% of the 425-625 W band, against a median of 220.7. Ranked 11,731st in the whole database. - **20.32% module efficiency** - Bottom 5% of the 425-625 W band, against a median of 22.07%. Ranked 11,739th in the whole database. - **25 year performance warranty** - Bottom 11% of the 425-625 W band, against a median of 30 yrs. - **Best for:** Commercial, shaded-installations, utility-scale and hot-climate. - **Not ideal for:** Roofs where every square metre has to count, tight roof space and owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 525 W - **Efficiency:** 20.32 % - **Voltage at Pmax (Vmp):** 40.80 V - **Current at Pmax (Imp):** 12.88 A - **Open-circuit voltage (Voc):** 49.10 V - **Short-circuit current (Isc):** 13.60 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 count:** 144 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 28.0 kg - **Area:** 2.58 m2 - **Power density:** 203.2 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:** 431 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11739 of 14005 | | Power density | 11731 of 14005 | | Temperature coefficient | 10419 of 14005 | | Weight | 7178 of 14005 | | Warranty | 9798 of 14005 | ## About this series The S-Energy SL65-72MAJ series is designed for installations where maximizing energy production from a given area and stable operation under real roof and ground conditions are crucial. The modules utilize **monocrystalline cells in a half-cut configuration**, which minimizes internal losses and helps maintain performance even with partial shading from chimneys, antennas, or trees. The use of **high-current architecture and modern connection solutions** makes it easy to build efficient module chains in commercial projects, where simple configurations and predictable operating parameters are key. In practice, the SL65-72MAJ solves the common problem of decreased production in hot weather - thanks to **favorable temperature characteristics**, the modules minimize power loss at high temperatures. This makes it a good choice for companies, PV farms, and larger prosumer installations that require **robust resistance to weather conditions** and long-term profitability, without paying extra for marketing extras offered by competitors. ## Notable figures - At 20.3% efficiency, this panel is 1.5pp below the \*\*database\*\* median of 21.8% - 203.2 W/m² power density is 14.9 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - At -0.35%/°C, loses 0.05pp more power per degree than \*\*database\*\* median (-0.30%/°C) - Weight of 28.0 kg is 1.5 kg above \*\*database\*\* median (26.5 kg) - verify structural support - #11739 for efficiency, #10419 for temperature performance out of 14005 panels ## Questions ### What warranty does the S-Energy SL65-72MAJ come with? S-Energy provides a 12-year product warranty covering manufacturing defects and module integrity, along with a 25-year linear power output warranty. Over that 25-year period, the panel must maintain output within the degradation schedule specified in the datasheet. S-Energy is a South Korean manufacturer with its own production facilities, making warranty claims enforceable through established channels. ### How do the half-cut cells in the S-Energy SL65-72MAJ affect performance under partial shading? Half-cut cell technology splits each cell in two, resulting in 144 smaller cells instead of 72 full-size ones. When shading from a chimney or antenna hits part of the module, only a portion of the electrical circuit is affected while the rest continues generating power. In real-world conditions this means lower production losses during morning and afternoon hours when some shading is unavoidable. ### Does the S-Energy SL65-72MAJ lose significant power output on hot days? The SL65-72MAJ series has a power temperature coefficient of approximately -0.35%/°C, which is a favorable figure for monocrystalline modules in this power class. At a cell temperature of 70°C — typical on a hot summer day — the power loss is around 17.5% rather than the 20–21% seen in older technologies. This results in measurably higher annual yield in warmer climates and during summer peak periods. ### How heavy is the S-Energy SL65-72MAJ and can it be installed on a pitched roof? The module weighs approximately 28 kg with dimensions of 2,278 × 1,134 × 35 mm — standard sizing for commercial-class 550 W modules. Pitched-roof installation is possible, but the weight and size require at least a two-person crew and a prior structural load assessment of the roof. The series performs equally well in ground-mounted systems, where dimensions and weight are less of a constraint. ### Is the S-Energy SL65-72MAJ a bifacial solar panel? No, the SL65-72MAJ series is a monofacial module, meaning energy is generated from the front surface only. Bifacial technology would allow additional harvest from light reflected off the ground, but requires a suitable reflective surface and adequate ground clearance. The SL65-72MAJ is optimized for installations where predictable output parameters and lower BoS costs are the priority, without the additional mounting infrastructure that bifacial modules demand. ### Is the S-Energy SL65-72MAJ better suited for residential or commercial and utility-scale projects? With a peak output of 550 W, a maximum system voltage of 1,500 V, and a high-current architecture designed for efficient string configuration, the SL65-72MAJ is primarily a commercial and utility-scale module. It is best suited for large prosumer systems above roughly 30 kWp, agri-PV projects, and ground-mounted solar farms. For smaller residential rooftops, lower-wattage variants within the same S-Energy family may be a better fit. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/half-sl65-72maj-525-550z-220412-2022-en-ver-1-0-54c0115754da.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, +4.7 pp, +5 yr warranty | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +4.5 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, +4.5 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, +4.4 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, +4.3 pp, +5 yr warranty | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +4.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, +4.2 pp, +5 yr warranty | | [S-Energy SL65-72BDJ-530R](https://comparepv.com/panel/s-energy-sl65-72bdj-530r) | 530 W | Heavier, +0.2 pp, +5 yr warranty | | [S-Energy SL65-72BDJ-530Z](https://comparepv.com/panel/s-energy-sl65-72bdj-530z) | 530 W | Heavier, +5 yr warranty | | [S-Energy SE65-72BGJ-535S](https://comparepv.com/panel/s-energy-se65-72bgj-535s) | 535 W | +10 W, +0.4 pp | | [S-Energy SL65-72BDJ-535R](https://comparepv.com/panel/s-energy-sl65-72bdj-535r) | 535 W | Heavier, +0.4 pp, +5 yr warranty | | [S-Energy SL65-72BDJ-540R](https://comparepv.com/panel/s-energy-sl65-72bdj-540r) | 540 W | Heavier, +0.6 pp, +5 yr warranty | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +125 W, cooler, +4.9 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +120 W, cooler, +4.7 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +115 W, cooler, +4.5 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +110 W, cooler, +4.3 pp | --- Source: https://comparepv.com/panel/s-energy-sl65-72maj-525z Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.