--- title: "Jetion JT415SJt(B) Solar Panel: Specs & Datasheet | ComparePV" description: "Jetion JT415SJt(B) solar panel. Specs: 21.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/jetion-jt415sjt-b" image: "https://comparepv.com/og/panel/jetion-jt415sjt-b.png" updated: 2026-09-11 --- # Jetion JT415SJt(B) Middle of its segment, heavy for its output 1,220 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Jetion - **Model:** JT415SJt(B) - **Series:** JT SJt(B) - **Rated power:** 415 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 400-450 W (1220 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 415 W | 435 W | Weak - bottom 9% | | | Module efficiency | 21.30% | 22.00% | Weak - bottom 13% | 8,585 | | Power density | 212.5 | 220.2 | Weak - bottom 10% | 8,858 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight (kg) | 25.8 kg | 22.0 kg | Weak - bottom 4% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.30% | 22.00% | Weak - bottom 13% | 8,585 | | Power density | 212.5 | 220.2 | Weak - bottom 10% | 8,858 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight per kWp | 62.2 | 51.5 | Weak - bottom 4% | 12,847 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **62.2 kg per kWp** - Bottom 4% of the TOPCon 400-450 W segment, against a median of 51.5. Ranked 12,847th in the whole database. - **212.5 watts per square metre** - Bottom 10% of the TOPCon 400-450 W segment, against a median of 220.2. - **21.30% module efficiency** - Bottom 13% of the TOPCon 400-450 W segment, against a median of 22.00%. - **Best for:** Residential, commercial and cold-climate. - **Not ideal for:** Weight-limited structures, roofs where every square metre has to count and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 415 W - **Efficiency:** 21.30 % - **Voltage at Pmax (Vmp):** 31.35 V - **Current at Pmax (Imp):** 13.24 A - **Open-circuit voltage (Voc):** 37.85 V - **Short-circuit current (Isc):** 14.01 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 - **Bifacial:** yes - **Bifacial gain:** 22.00 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 25.8 kg - **Area:** 1.95 m2 - **Power density:** 212.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 363 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8585 of 14129 | | Power density | 8858 of 14129 | | Temperature coefficient | 2220 of 14129 | | Weight | 12847 of 14129 | | Warranty | 21 of 14129 | ## Pros - **N-type TOPCon technology, low degradation** - Multi-busbar N-type TOPCon cells deliver 21-22% efficiency with a very low degradation profile: ≤1% first-year and ≤0.4% annual thereafter. This is a clear improvement over legacy PERC degradation rates, translating into higher real-world lifetime energy yield. - **Bifacial dual-glass construction** - The dual-glass design and high bifaciality factor enable additional rear-side energy harvest from ground-reflected light, lowering the LCOE compared to monofacial modules of similar power class, e.g. Boviet GAMMA (430 Wp, 19.8% efficiency) at the same peak power. - **Confirmed Tier-1 status (BNEF Q1 2026)** - Jetion Solar, in operation since 2004, appears on the current BloombergNEF Tier 1 list (Q1 2026 update), confirming manufacturer bankability and easing project financing through banking institutions. - **30-year linear power warranty** - The manufacturer backs the modules with a 30-year linear power output warranty, aligning with best-in-class practice for premium TOPCon lines and giving investors predictable long-term energy production. - **Resistance to harsh conditions and PID** - Double EL inspection during manufacturing keeps PID risk near zero, and the modules pass rigorous snow, wind, and hail load testing, making the series suitable for both rooftop installations and utility-scale PV farms in variable climates. ## Cons - **Shorter 12-year product warranty** - The materials and workmanship warranty is set at 12 years, whereas several competing Tier-1 TOPCon lines now standardly offer 15-25 years of product coverage alongside the same 30-year linear power warranty. This can be a differentiating factor when comparing bankable manufacturer offers. ## About this series The JT SJt(B) series consists of dual-glass photovoltaic modules built on monocrystalline **N-type TOPCon** cells with multi-busbar technology, engineered to maximize energy yield while minimizing degradation risk. The defining feature of this series is its **bifacial energy generation** - thanks to a high bifaciality factor, the module captures additional energy reflected from the ground surface, meaningfully reducing the levelized cost of energy (LCOE) over the system's lifetime. The dual-glass construction eliminates the **LID/LETID degradation** issues typical of older technologies, while strict manufacturing quality control, including double EL inspection, reduces the risk of PID effect to near zero. These panels are **built to withstand harsh weather conditions** - rated for high snow and wind loads and tested against rigorous hail resistance standards, making them a solid choice for installations in climates with variable weather patterns. The JT SJt(B) series works well both in rooftop projects and ground-mounted PV farms where **long-term reliability** and stable output matter most. The manufacturer backs the modules with a multi-year warranty covering materials as well as linear power output degradation, adding further security to the investment. ## Notable figures - Efficiency of 21.3% is 0.7pp below the \*\*TOPCon 400-450W\*\* median (22.0%) - 212.5 W/m² power density is 7.7 W/m² below \*\*TOPCon 400-450W\*\* median (220.2 W/m²) - requires larger installation area - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 400-450W\*\* median - At 25.8 kg, this panel is 3.8 kg heavier than the \*\*TOPCon 400-450W\*\* median (22.0 kg) - more demanding for installation crews - Bifaciality factor of 85% can add 4-13% extra yield with reflective mounting surface ## Questions ### How does the N-type TOPCon technology in Jetion JT SJt(B) panels differ from older PERC cells? N-type TOPCon cells offer lower light-induced degradation (LID) and higher conversion efficiency than classic P-type PERC cells. In practice this means higher output in the early years of operation and a slower power decline over time, resulting in a better return on investment across the system's entire lifecycle. ### Do Jetion JT SJt(B) bifacial modules really generate more energy? Yes, thanks to the dual-glass design, the rear side of the module captures light reflected off the ground, roof, or surroundings. The actual gain depends on the albedo of the surface and mounting height, but with a bright surface (e.g., gravel, white roofing membrane) you can expect several to over ten percent more energy than from a monofacial panel of the same nominal power. ### What warranty applies to the 430 Wp JT SJt(B) series modules? The manufacturer provides a 12-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. This level of coverage is typical for tier 1 manufacturers and means the panel should still perform at the guaranteed level even after 30 years of operation. ### Are JT SJt(B) panels suitable for roofs exposed to heavy snow loads? Yes, the JT SJt(B) series undergoes rigorous mechanical load testing, including high snow and wind load resistance, and the dual-glass construction further increases module rigidity. This makes the panels suitable both for rooftop installations in regions with heavy snowfall and for ground-mount PV farms exposed to strong wind. ### Does the dual-glass construction in JT SJt(B) modules increase the risk of PID effect? No, the dual-glass construction combined with strict production quality control, including double EL (electroluminescence) inspection, significantly reduces the risk of PID effect. This design also eliminates the LID and LETID degradation issues typical of older technologies, resulting in more stable energy production throughout the module's lifespan. ### Are Jetion JT SJt(B) panels a good choice for a ground-mount solar farm or better for rooftop use? The series performs well in both applications. High resistance to hail, wind, and snow along with bifacial energy generation make it attractive for ground-mount PV farms, where modules can be mounted to fully exploit the bifacial effect. At the same time, its long-term reliability and extended warranty make it well suited for rooftop projects focused on stable productivity. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/36e51acb0afa48d590641f0f0fcd18ff-fa4e84c1a5a7.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +50 W, lighter, +2.5 pp | | [Luxor Solar LX-465M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-465m-182r-96-gg) | 465 W | +50 W, cooler, +2.5 pp | | [AIKO AIKO-A460-MAH54Mb](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a460-mah54mb-1) | 460 W | +45 W, lighter, +2.3 pp | | [Luxor Solar LX-465M/182R188-108+ GG](https://comparepv.com/panel/luxor-solar-lx-465m-182r188-108-gg) | 465 W | +50 W, lighter, +2.3 pp | | [Just Solar JST-EDMH-(445-465)W-TD (460W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-460w-class) | 460 W | +45 W, lighter, +2.3 pp | | [Luxor Solar LX-460M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-460m-182r-96-gg) | 460 W | +45 W, cooler, +2.2 pp | | [Philadelphia Solar PS-MNB108(HCBF)-460W](https://comparepv.com/panel/philadelphia-solar-ps-mnb108-hcbf-460w) | 460 W | +45 W, lighter, +2.2 pp | | [JA Solar JAT54S40-460/LR](https://comparepv.com/panel/ja-solar-jat54s40-460-lr) | 460 W | +45 W, lighter, +2.2 pp | | [Jetion JT410SJt(B)](https://comparepv.com/panel/jetion-jt410sjt-b) | 410 W | -0.3 pp | | [Jetion JT420SEt(L)](https://comparepv.com/panel/jetion-jt420set-l) | 420 W | Hotter, lighter, -10 yr warranty | | [Jetion JT420SJt(B)](https://comparepv.com/panel/jetion-jt420sjt-b) | 420 W | Very close match | | [Jetion JT425SJt(B)](https://comparepv.com/panel/jetion-jt425sjt-b) | 425 W | +10 W, +0.5 pp | | [Jetion JT425SEt(L)](https://comparepv.com/panel/jetion-jt425set-l) | 425 W | Lighter, +0.5 pp, -10 yr warranty | | [Jetion JT430SEt(L)](https://comparepv.com/panel/jetion-jt430set-l) | 430 W | Lighter, +0.7 pp, -10 yr warranty | | [Jetion JT430SJt(B)](https://comparepv.com/panel/jetion-jt430sjt-b) | 430 W | +15 W, +0.7 pp | | [Jetion JT435SEt(L)](https://comparepv.com/panel/jetion-jt435set-l) | 435 W | Lighter, +1.0 pp, -10 yr warranty | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +95 W, cooler, +3.7 pp | --- Source: https://comparepv.com/panel/jetion-jt415sjt-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.