--- title: "Jetion JT585SSt(B) Solar Panel: Specs & Datasheet | ComparePV" description: "Jetion JT585SSt(B) solar panel. Specs: 22.60% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/jetion-jt585sst-b" image: "https://comparepv.com/og/panel/jetion-jt585sst-b.png" updated: 2026-09-11 --- # Jetion JT585SSt(B) Solid all-round for its segment 1,022 panels in the segment TOPCon 550-600 W ## Identity - **Manufacturer:** Jetion - **Model:** JT585SSt(B) - **Series:** JT SSt(B) - **Rated power:** 585 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 550-600 W (1022 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 585 W | 580 W | Typical | | | Module efficiency | 22.60% | 22.44% | Typical | 3,716 | | Power density | 226.5 | 224.4 | Typical | 3,557 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight (kg) | 31.0 kg | 31.2 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.60% | 22.44% | Typical | 3,716 | | Power density | 226.5 | 224.4 | Typical | 3,557 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight per kWp | 53.0 | 53.8 | Typical | 6,755 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | - **Best for:** Utility-scale and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 585 W - **Efficiency:** 22.60 % - **Voltage at Pmax (Vmp):** 42.77 V - **Current at Pmax (Imp):** 13.68 A - **Open-circuit voltage (Voc):** 51.67 V - **Short-circuit current (Isc):** 14.43 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:** 144 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 31.0 kg - **Area:** 2.58 m2 - **Power density:** 226.5 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:** 511 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 3716 of 14129 | | Power density | 3557 of 14129 | | Temperature coefficient | 2220 of 14129 | | Weight | 6755 of 14129 | | Warranty | 21 of 14129 | ## Pros - **N-type TOPCon with multi-busbar** - Multi-busbar N-type TOPCon cells deliver up to 22.8% efficiency and significantly lower LID/LETID degradation compared to classic PERC cells, translating into higher and more stable energy yield over a 25-30 year horizon. - **Dual-glass bifacial construction** - Bifacial cells in a double-glass housing capture light reflected from the ground and generate additional rear-side energy, lowering LCOE across the full lifecycle of the installation - a key advantage for commercial projects and utility-scale PV farms. - **30-year linear power warranty** - The manufacturer guarantees 30 years of linear power degradation with a 12-year product warranty, matching the best comparable series on the market (Talesun TM7G72M, Horay HS 182-144 TC-D Ocean, AE Solar HORIZON CMD-144BDS) and giving investors predictable long-term returns. - **Top-tier segment specifications** - Power output up to 590Wp and efficiency up to 22.8% place the JT SSt(B) series on par with leading competitors in the bifacial TOPCon 144-cell segment, showing no meaningful gap versus the best solutions available in the 2026 market. - **Mechanical durability and quality control** - The module design is optimized for high wind and snow loads and hail impact resistance, backed by dual EL inspection, minimizing PID risk and failure rates in demanding operating environments - important for installations in variable climates. ## Cons - **Non-continuous Tier-1 status history** - Jetion Solar held BNEF Tier 1 status in Q4 2020, was subsequently dropped from the list, and only returned in Q2 2024 after BNEF tightened its criteria. This is a less continuous bankability track record than manufacturers with uninterrupted Tier-1 status spanning over a decade (e.g., Trina Solar, JA Solar), which may matter during project financing due diligence. - **Lack of long-term field data** - The JT SSt(B) series launched in 2025, so no multi-year real-world operational data yet confirms the claimed 30-year linear power degradation - unlike competing TOPCon series that have been on the market since 2021-2022. ## About this series The JT SSt(B) series from Jetion Solar consists of dual-glass monocrystalline modules engineered for installations where maximizing energy yield under demanding operating conditions is the priority. The panels use **N-type TOPCon technology with multiple busbars**, delivering higher conversion efficiency and lower resistive losses compared to conventional PERC cells. The bifacial cell design, housed in a glass-glass construction, captures light reflected from the ground surface, allowing the rear side of the module to generate additional power and significantly reducing the levelized cost of electricity (LCOE) over the system's lifetime. The series stands out for its **low LID/LETID degradation**, ensuring more stable energy output over decades of operation, while strict quality control and double EL inspection minimize the risk of PID effects. The module construction has been optimized for **resistance to extreme weather conditions** - high wind and snow loads as well as hail impacts are not an issue, making it a solid choice for installations in regions with variable climates. The manufacturer backs the series with a **30-year linear power output warranty**, giving investors confidence in the long-term profitability of their projects. The JT SSt(B) is a solution dedicated to commercial installations and solar farms, where predictable performance and low operating costs over the entire service life matter most. ## Notable figures - At 22.6% efficiency, this panel is on par with typical \*\*TOPCon 550-600W\*\* modules - Power density of 226.5 W/m² matches the \*\*TOPCon 550-600W\*\* median - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 550-600W\*\* median - Bifaciality factor of 85% can add 4-13% extra yield with reflective mounting surface - #3716 for efficiency, #2220 for temperature performance out of 14129 panels ## Questions ### How does TOPCon technology in Jetion JT SSt(B) panels differ from classic PERC cells? The N-type TOPCon cells used in the JT SSt(B) series feature an additional passivating oxide layer that reduces electron recombination at the cell surface. This results in higher conversion efficiency than classic P-type PERC cells and lower current losses. TOPCon also handles high temperatures better and shows lower LID/LETID degradation, leading to more stable energy yield throughout the panel's lifetime. ### How much extra energy do bifacial JT SSt(B) panels generate compared to a standard module? Thanks to the glass-glass construction, JT SSt(B) panels also capture light reflected from the ground, roof, or bright surfaces beneath the array. Depending on ground albedo, mounting height, and installation type, the additional rear-side energy gain can range from a few to over ten percent, effectively lowering the levelized cost of energy (LCOE) over the system's lifetime. ### What warranty does the Jetion JT SSt(B) series offer on power output and the product itself? JT SSt(B) panels come with a 30-year linear power output warranty and a 12-year product warranty covering material and manufacturing defects. The long power warranty is possible thanks to TOPCon's low degradation rate and strict quality control, including double EL inspection that minimizes the risk of PID effect. ### Are Jetion JT SSt(B) panels suitable for regions with heavy snow and wind loads? Yes, the JT SSt(B) series is engineered for resistance to extreme weather conditions, including high wind and snow loads as well as hail impact. This makes the panels a solid choice for installations in regions with variable and demanding climates, suitable for both commercial projects and utility-scale solar farms. ### What type of installations is the JT SSt(B) series designed for - is it suitable for residential rooftops? The JT SSt(B) series is primarily designed for commercial installations and utility-scale solar farms, where predictable performance and low operating costs at scale matter most. With power output up to 590 Wp and bifacial technology, it performs best in ground-mount systems or large rooftop arrays where the rear-side energy gain can be fully utilized. ### Is Jetion a Tier 1 manufacturer, and where are JT SSt(B) panels produced? Yes, Jetion Solar holds Tier 1 manufacturer status, reflecting financial stability, long-standing industry experience, and bankability for credit-financed projects. The company is headquartered in China, where its main production facilities are located, and JT SSt(B) panels undergo multi-stage quality control before shipping to customers worldwide. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/e0a7fc4ae25148929302550cfa54174c-a051afc9461d.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +2.2 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | -30 W, lighter, +2.0 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +50 W, lighter, +2.0 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +45 W, cooler, +1.8 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | -35 W, lighter, +1.8 pp | | [Jetion JT540SGh](https://comparepv.com/panel/jetion-jt540sgh) | 540 W | Hotter, -1.7 pp, -5 yr warranty | | [Jetion JT545SGh](https://comparepv.com/panel/jetion-jt545sgh) | 545 W | Hotter, -1.5 pp, -5 yr warranty | | [Jetion JT550SGh](https://comparepv.com/panel/jetion-jt550sgh) | 550 W | Hotter, -1.3 pp, -5 yr warranty | | [Jetion JT570SSt(B)](https://comparepv.com/panel/jetion-jt570sst-b) | 570 W | -15 W, -0.5 pp | | [Jetion JT575SSt(B)](https://comparepv.com/panel/jetion-jt575sst-b) | 575 W | -10 W, -0.4 pp | | [Jetion JT580SSt(B)](https://comparepv.com/panel/jetion-jt580sst-b) | 580 W | -0.2 pp | | [Jetion JT590SSt(B)](https://comparepv.com/panel/jetion-jt590sst-b) | 590 W | Very close match | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +65 W, lighter, +2.6 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +60 W, lighter, +2.4 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +55 W, lighter, +2.2 pp | --- Source: https://comparepv.com/panel/jetion-jt585sst-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.