--- title: "Jetion JT570SJk(B) 570W Solar Panel - Specs & Review | ComparePV" description: "Jetion JT570SJk(B) 570W solar panel. Specs: 22.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/jetion-jt570sjk-b" updated: 2026-09-11 --- # Jetion JT570SJk(B) Solid all-round for its segment 32 panels in the segment HJT 550-600 W ## Identity - **Manufacturer:** Jetion - **Model:** JT570SJk(B) - **Series:** JT SJk(B) - **Rated power:** 570 W - **Cell technology:** HJT - **Bifacial:** yes ## How it compares Compared against segment HJT 550-600 W (32 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 570 W | 585 W | Weak - bottom 16% | | | Module efficiency | 22.30% | 22.48% | Typical | 5,100 | | Power density | 223.1 | 224.8 | Typical | 5,085 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight (kg) | 30.7 kg | 32.6 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.30% | 22.48% | Typical | 5,100 | | Power density | 223.1 | 224.8 | Typical | 5,085 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight per kWp | 53.9 | 55.2 | Typical | 8,007 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | - **Best for:** Utility-scale, commercial, hot-climate and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 570 W - **Efficiency:** 22.30 % - **Voltage at Pmax (Vmp):** 34.20 V - **Current at Pmax (Imp):** 16.67 A - **Open-circuit voltage (Voc):** 40.70 V - **Short-circuit current (Isc):** 17.53 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.240 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** HJT - **Cell count:** 108 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 1961 mm - **Width:** 1303 mm - **Thickness:** 35 mm - **Weight:** 30.7 kg - **Area:** 2.56 m2 - **Power density:** 223.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 90.3 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.30 % - **Output after 30 years:** 515 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5100 of 14005 | | Power density | 5085 of 14005 | | Temperature coefficient | 13 of 14005 | | Weight | 8007 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type HJT cells with very high efficiency** - Efficiency of 22.3-23.1% places the series at the top of the segment, above comparable modules such as Talesun TM7G72M (22.8%), Horay Solar HS 182-144 (22.8%) and AE Solar HORIZON CMD-144BDS (22.86%). N-type HJT technology also offers a lower temperature coefficient than conventional PERC, translating into higher energy yield on hot days. - **Bifaciality ratio above 90%** - The dual-glass bifacial design recovers over 90% of power from the rear side, 2-4 percentage points higher than typical bifacial PERC modules. This delivers a real energy gain in ground-mount installations and on light-colored, high-albedo rooftop surfaces. - **30-year linear power warranty** - A 15-year product warranty combined with a 30-year linear power warranty matches the current premium standard for N-type bifacial modules and supports predictable LCOE modeling over a long investment horizon. - **Resistance to LID and PID degradation** - The dual-glass construction combined with N-type HJT technology significantly reduces light-induced (LID) and potential-induced (PID) degradation, resulting in a more stable annual degradation curve compared to standard single-glass PERC modules. - **Established Tier-1 manufacturer** - Jetion Solar has operated since 2004 and holds Tier-1 bankable status, reducing financial and service risk for long-term PPA agreements and project financing. ## About this series The JT SJk(B) series combines N-type heterojunction (HJT) mono cell technology with a dual-glass, bifacial module design, making it one of the more advanced solutions currently available on the photovoltaic market. The use of **N-type HJT cells** together with **half-cut and multi-busbar cell technology** reduces resistive losses and increases energy yield even under unfavorable morning, evening, or overcast lighting conditions. Thanks to its **bifacial dual-glass construction**, these panels capture additional energy reflected from the ground surface, which is particularly beneficial for ground-mount installations, light-colored rooftops, and systems with elevated albedo. The series also stands out for its **very low temperature coefficient** of power, allowing it to maintain high performance even on hot days, when conventional modules lose efficiency. The dual-glass construction additionally provides **resistance to LID and PID degradation**, translating into stable operation and long service life for the installation. The reinforced frame and tempered glass withstand extreme snow and wind loads, making this series suitable for both commercial installations and solar power plants in demanding climatic conditions. This is a solution for investors seeking maximum long-term return on investment. ## Notable figures - At 22.3% efficiency, this panel is on par with typical \*\*HJT 550-600W\*\* modules - Power density of 223.1 W/m² matches the \*\*HJT 550-600W\*\* median - At -0.24%/°C, hot weather performance is typical for \*\*HJT 550-600W\*\* panels - At 30.7 kg, this panel is 1.9 kg lighter than \*\*HJT 550-600W\*\* median (32.6 kg) - easier handling during installation - 85% bifaciality enables rear-side power generation, boosting yield by 4-13% on reflective surfaces ## Questions ### How does Jetion JT SJk(B) HJT cell technology differ from classic PERC or TOPCon cells? HJT (heterojunction) N-type cells combine crystalline silicon with amorphous silicon layers, resulting in lower resistive losses and higher efficiency than PERC, plus better high-temperature performance than TOPCon. This gives the JT SJk(B) series higher energy yield in low light, cloudy conditions, and hot weather, translating into greater annual energy production. ### Does the bifacial design of JT SJk(B) panels actually increase energy production? Yes, the dual-glass construction allows these panels to capture additional reflected light from the rear side. The gain is highest over bright surfaces, such as white roofing, gravel, or snow, where output can increase by several percent to over ten percent compared to a standard monofacial panel with the same front-side rated power. ### What warranty comes with Jetion JT SJk(B) panels and what does it cover? The manufacturer provides a 15-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. This means that even after 30 years of operation, the panel is guaranteed to still produce a specified percentage of its initial rated power, one of the longer warranty periods currently offered in the PV market. ### Are 590 Wp JT SJk(B) panels suitable for ground-mount installations and solar farms? Yes, the high unit power of up to 590 Wp combined with bifaciality makes the JT SJk(B) series especially effective in large ground-mount installations and solar farms, where modules are raised on racking above high-albedo ground surfaces. Fewer panels needed to reach a given target power also reduces mounting structure and wiring costs. ### How do Jetion HJT panels perform on hot days compared to standard modules? The JT SJk(B) series has a very low power temperature coefficient, characteristic of HJT technology, meaning a smaller drop in output as module temperature rises. In practice, on hot, sunny days these panels lose noticeably less power than classic PERC modules, which matters for roofs that heat up significantly in summer. ### Does the dual-glass construction of JT SJk(B) panels improve durability and resistance to degradation? Yes, the dual-glass build with tempered glass on both sides reduces LID and PID degradation, so the panel loses power more slowly over its service life. This construction also offers better mechanical resistance to snow and wind loads and microcracking, resulting in longer and more stable system performance. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/ffaf0540f7cf4630b9a32951a88f5ba8-23081edf901a.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Hotter, lighter, +2.5 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Hotter, lighter, +2.3 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Hotter, lighter, +2.1 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | -30 W, lighter, +2.1 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | -30 W, lighter, +2.1 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | -25 W, lighter, +2.0 pp | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | -25 W, lighter, +1.9 pp | | [Jetion JT575SJk(B)](https://comparepv.com/panel/jetion-jt575sjk-b) | 575 W | Very close match | | [Jetion JT580SJk(B)](https://comparepv.com/panel/jetion-jt580sjk-b) | 580 W | +10 W, +0.4 pp | | [Jetion JT585SJk(B)](https://comparepv.com/panel/jetion-jt585sjk-b) | 585 W | +15 W, +0.6 pp | | [Jetion JT590SJk(B)](https://comparepv.com/panel/jetion-jt590sjk-b) | 590 W | +20 W, +0.8 pp | | [Resun Solar RS9V-M-DG-590](https://comparepv.com/panel/resun-solar-rs9v-m-dg-590) | 590 W | +20 W, hotter, +0.8 pp | | [Resun Solar RS9V-M-DG-585](https://comparepv.com/panel/resun-solar-rs9v-m-dg-585) | 585 W | +15 W, hotter, +0.6 pp | | [Gamko New Energy GKA210N108-580W](https://comparepv.com/panel/gamko-new-energy-gka210n108-580w) | 580 W | Hotter, lighter, +0.4 pp | | [Resun Solar RS9V-M-DG-580](https://comparepv.com/panel/resun-solar-rs9v-m-dg-580) | 580 W | +10 W, hotter, +0.4 pp | | [Gamko New Energy GKA210N108-575W](https://comparepv.com/panel/gamko-new-energy-gka210n108-575w) | 575 W | Hotter, lighter, +0.2 pp | --- Source: https://comparepv.com/panel/jetion-jt570sjk-b 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.