--- title: "Jetion JT440SYK(B) 440W Solar Panel - Specs & Review | ComparePV" description: "Jetion JT440SYK(B) 440W solar panel. Specs: 22.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/jetion-jt440syk-b" updated: 2026-09-11 --- # Jetion JT440SYK(B) Space saver, no clear weak spot 113 panels in the segment HJT 400-450 W ## Identity - **Manufacturer:** Jetion - **Model:** JT440SYK(B) - **Series:** JT SYK(B) Dual-glass Monocrystalline Solar Module - **Rated power:** 440 W - **Cell technology:** HJT - **Bifacial:** yes ## How it compares Compared against segment HJT 400-450 W (113 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 440 W | 435 W | Typical | | | Module efficiency | 22.90% | 22.20% | Strong - top 3% | 2,359 | | Power density | 229.4 | 221.6 | Strong - top 1% | 2,333 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight (kg) | 23.0 kg | 23.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.90% | 22.20% | Strong - top 3% | 2,359 | | Power density | 229.4 | 221.6 | Strong - top 1% | 2,333 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight per kWp | 52.3 | 52.4 | Typical | 5,732 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **229.4 watts per square metre** - Top 1% of the HJT 400-450 W segment, against a median of 221.6. Ranked 2,333rd in the whole database. - **22.90% module efficiency** - Top 3% of the HJT 400-450 W segment, against a median of 22.20%. Ranked 2,359th in the whole database. - **Best for:** Commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 440 W - **Efficiency:** 22.90 % - **Voltage at Pmax (Vmp):** 25.80 V - **Current at Pmax (Imp):** 17.06 A - **Open-circuit voltage (Voc):** 30.70 V - **Short-circuit current (Isc):** 17.92 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:** 80 - **Bifacial:** yes ### Physical - **Length:** 1750 mm - **Width:** 1096 mm - **Thickness:** 30 mm - **Weight:** 23.0 kg - **Area:** 1.92 m2 - **Power density:** 229.4 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:** 397 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2359 of 14005 | | Power density | 2333 of 14005 | | Temperature coefficient | 13 of 14005 | | Weight | 5732 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Best-in-class temperature coefficient** - HJT cells deliver a temperature coefficient of approx. -0.26%/°C, compared to -0.30–0.32%/°C for TOPCon and -0.35%/°C for PERC. At a cell temperature of 70°C on a summer afternoon, this translates to roughly 3–4% higher real-world output versus comparable TOPCon peers such as the Luxor ECO LINE (22.86% efficiency) or Seraphim Nebula. - **30-year power warranty, ≤0.3%/yr degradation** - Jetion guarantees annual degradation ≤0.3% and first-year attenuation ≤1%, implying ~91.5% power retention after 30 years. By comparison, standard Tier-1 PERC modules (e.g., Jinko Tiger Pro) guarantee ~84.8% retention after 25 years — the JT SYK(B) series clearly outperforms this benchmark over a longer investment horizon. - **Bifacial ratio >90% from HJT cell symmetry** - The HJT heterojunction architecture, free of the highly absorptive BSF layer, enables a bifacial ratio exceeding 90%, some 5–8 percentage points higher than bifacial PERC modules (~82–85%). In ground-mount installations with reflective surfaces (gravel, concrete) or reflective roofs, this yields measurable energy gain at zero additional BoS cost. - **Structural PID immunity and corrosion resistance** - The TCO layer in HJT cells contains no insulating sub-layer, which structurally prevents PID without requiring anti-PID inverter settings. The dual-glass encapsulation — replacing the backsheet — also provides certified resistance to ammonia and salt mist corrosion, making the series suitable for agricultural, port, and coastal installations. - **BNEF Tier-1 bankable status (since Q2 2024)** - Jetion Solar re-entered the BNEF Tier-1 PV Module Maker list in Q2 2024 as one of the few HJT-focused manufacturers meeting full bankability criteria (non-recourse financing of six ≥10 MW projects by six different banks). This eliminates manufacturer-risk premiums in project finance structures and broadens eligibility for institutional lending in commercial and utility-scale projects. ## Cons - **Product warranty limited to 15 years** - The JT SYK(B) series carries a 15-year product (materials and workmanship) warranty, while leading Tier-1 manufacturers in the same performance class — Jinko Solar Tiger Neo, LONGi Hi-MO 6, Canadian Solar HiHero — standardly provide 25-year product warranties. The shorter coverage may be a constraint when securing bank financing for projects with a >20-year asset life or meeting procurement specifications in public tenders. - **Higher module cost driven by HJT manufacturing** - HJT cell production requires dedicated low-temperature deposition lines and consumes approximately 15–20% more silver than TOPCon processes, resulting in a module price premium typically 10–15% above equivalent-wattage TOPCon alternatives (e.g., Luxor ECO LINE N-TYPE TOPCon 440W). In residential prosumer and small commercial projects, the higher yield may not fully offset the increased LCOE contribution. ## About this series The Jetion JT SYK(B) Dual-glass Monocrystalline Solar Module series introduces a new level of quality in the area of photovoltaic system durability thanks to the use of **double-glass technology**. The elimination of the traditional backsheet in favor of a tempered glass pane significantly increases the modules' resistance to micro-cracks and extreme weather conditions, which directly translates into the extended lifespan of the entire installation. These modules utilize **monocrystalline half-cut cells**, which allows for the minimization of energy losses resulting from shading and the reduction of internal resistance. A key distinguishing feature of the JT SYK(B) series is its **exceptional fire resistance class**, making it an ideal solution for facilities with increased safety requirements, such as warehouses or public buildings. The applied design effectively addresses the problem of potential-induced degradation (PID) and corrosion in environments with high salinity or high ammonia concentration. By choosing these panels, investors receive **higher long-term yield stability**, which distinguishes them from standard single-sided solutions. This product is dedicated to demanding commercial projects and ground-mounted installations, where the priority is maximum return on investment with minimal equipment maintenance costs. This series guarantees **excellent tightness and mechanical resistance**, setting standards in the premium segment. ## Notable figures - Efficiency of 22.9% is 0.7pp above the \*\*HJT 400-450W\*\* median (22.2%) - 229.4 W/m² power density - 7.8 W/m² more than \*\*HJT 400-450W\*\* median (221.6 W/m²), more power per roof area - At -0.24%/°C, hot weather performance is typical for \*\*HJT 400-450W\*\* panels - Bifaciality factor of 85% can add 4-13% extra yield with reflective mounting surface - Ranked #2359 out of 14005 panels for efficiency in the database ## Questions ### What warranty does the Jetion JT SYK(B) Dual-glass series come with? The Jetion JT SYK(B) series includes a 15-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. This means the manufacturer guarantees a defined minimum performance level for three decades — a premium benchmark in the dual-glass module segment. The power warranty protects the investor against excessive degradation of energy yield over the long term. ### What is HJT cell technology used in the JT SYK(B) series and how does it compare to standard PERC? HJT (Heterojunction Technology) cells combine a monocrystalline silicon wafer with amorphous silicon layers, delivering higher conversion efficiency and a significantly lower temperature coefficient than PERC cells. In practice, this means better output on hot days and excellent performance under diffuse light. Combined with a half-cut cell layout, the JT SYK(B) series minimizes shading losses and reduces internal resistance, boosting total annual energy yield. ### Will the bifacial Jetion JT SYK(B) 440 Wp panel work well in a ground-mounted system? Yes. The bifacial architecture of the JT SYK(B) series is especially well-suited for ground-mounted installations, where the rear glass can collect irradiance reflected from the ground surface. With a bright albedo surface (gravel, grass, or snow), rear-side gain can add several to over 20% on top of the rated 440 Wp front-side output. The dual-glass construction also provides the mechanical strength and ingress protection required for near-ground mounting. ### Are the Jetion JT SYK(B) panels suitable for warehouses and public buildings from a fire safety perspective? Yes. The dual-glass design — tempered glass replacing a conventional polymer backsheet — gives the JT SYK(B) series an outstanding fire resistance rating equivalent to Fire Class A. This makes them a preferred choice for facilities with strict fire safety requirements, such as industrial warehouses, logistics centers, and public buildings, where standard backsheet-based panels may not comply with local building codes. ### Can the Jetion JT SYK(B) panels handle aggressive environments such as coastal or livestock farm locations? Yes. The JT SYK(B) series is engineered for harsh environments: eliminating the polymer backsheet removes the primary corrosion ingress point in salt-heavy coastal air, while the materials are certified for ammonia resistance, which is critical near animal farming operations. The modules also carry PID (Potential Induced Degradation) resistance certification, particularly important in long string configurations typical of large commercial PV plants. ### Is Jetion a reliable manufacturer, and where is the JT SYK(B) series produced? Jetion Solar is a Chinese manufacturer ranked as Tier 1 by BloombergNEF, confirming bankable financial stability — a key requirement when evaluating 30-year power warranties. The company has shipped over 20 GW of modules globally. The JT SYK(B) series is manufactured in China and meets European certification standards, including IEC safety and performance norms required for grid-connected installations across the EU. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/a60e4e7144dd4e09a5f8353af15d5068-f754fa800a2d.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +50 W, hotter, +1.6 pp | | [Suntech STP-NT11/48QGSF-490](https://comparepv.com/panel/suntech-stp-nt11-48qgsf-490) | 490 W | +50 W, hotter, +1.6 pp | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +45 W, lighter, +1.4 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +45 W, hotter, +1.4 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +45 W, hotter, +1.4 pp | | [Gokin GK-5-54HG-485M](https://comparepv.com/panel/gokin-gk-5-54hg-485m) | 485 W | +45 W, hotter, +1.4 pp | | [Heckert Solar ZEUS 3.0+ 108 485WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-485wp) | 485 W | +45 W, hotter, +1.4 pp | | [Jetion JT420SYk(B)](https://comparepv.com/panel/jetion-jt420syk-b) | 420 W | -20 W, -1.0 pp | | [Jetion JT425SYk(B)](https://comparepv.com/panel/jetion-jt425syk-b) | 425 W | -15 W, -0.8 pp | | [Jetion JT430SYk(B)](https://comparepv.com/panel/jetion-jt430syk-b) | 430 W | -10 W, -0.5 pp | | [Jetion JT435SYk(B)](https://comparepv.com/panel/jetion-jt435syk-b) | 435 W | Very close match | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +70 W, +2.1 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +55 W, hotter, +1.9 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +65 W, +1.8 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +60 W, +1.6 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +60 W, hotter, +1.6 pp | --- Source: https://comparepv.com/panel/jetion-jt440syk-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.