--- title: "Jetion JT790SXt(B) 790W Solar Panel - Specs & Review | ComparePV" description: "Jetion JT790SXt(B) 790W solar panel. Specs: 23.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/jetion-jt790sxt-b" updated: 2026-09-11 --- # Jetion JT790SXt(B) Efficiency leader, no clear weak spot 499 panels in the segment TOPCon 690-890 W ## Identity - **Manufacturer:** Jetion - **Model:** JT790SXt(B) - **Series:** JT SXt(B) - **Rated power:** 790 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 690-890 W (499 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 790 W | 710 W | Strong - top 1% | | | Module efficiency | 23.40% | 22.90% | Strong - top 13% | 882 | | Power density | 233.6 | 228.6 | Strong - top 14% | 928 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 40.0 kg | 38.0 kg | Strong - top 21% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.40% | 22.90% | Strong - top 13% | 882 | | Power density | 233.6 | 228.6 | Strong - top 14% | 928 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 50.6 | 53.1 | Strong - top 21% | 4,073 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **23.40% module efficiency** - Top 13% of the TOPCon 690-890 W segment, against a median of 22.90%. - **233.6 watts per square metre** - Top 14% of the TOPCon 690-890 W segment, against a median of 228.6. - **50.6 kg per kWp** - Top 21% of the TOPCon 690-890 W segment, against a median of 53.1. - **Best for:** Utility-scale, commercial and cold-climate. ## Specification ### Electrical - **Rated power (Pmax):** 790 W - **Efficiency:** 23.40 % - **Voltage at Pmax (Vmp):** 45.39 V - **Current at Pmax (Imp):** 17.41 A - **Open-circuit voltage (Voc):** 53.98 V - **Short-circuit current (Isc):** 18.61 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:** 25.00 ### Physical - **Length:** 2595 mm - **Width:** 1303 mm - **Thickness:** 33 mm - **Weight:** 40.0 kg - **Area:** 3.38 m2 - **Power density:** 233.6 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:** 690 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 882 of 14005 | | Power density | 928 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 4073 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon cells with multi-busbar** - N-type TOPCon cells reduce resistive losses and LID degradation compared to older P-type PERC technology, delivering module efficiency up to 23.7% and more stable output at elevated operating temperatures. - **Dual-glass bifacial construction** - Bifacial dual-glass design eliminates PID degradation risk and can boost total energy yield by roughly 10-25% versus monofacial backsheet panels, directly lowering the project's LCOE. - **30-year linear power warranty** - The manufacturer offers a 30-year power warranty alongside a 12-year product warranty, matching premium-segment standards for utility-scale plants and commercial installations where predictable power degradation is critical. - **Double EL inspection and Tier-1 status** - Modules undergo double full EL inspection to minimize hidden micro-crack risk, and Jetion is a Tier-1 (bankable) manufacturer founded in 2004, adding supplier credibility for large-scale project financing. - **High mechanical load resistance** - The dual-glass build provides greater resistance to snow, wind, and hail loads compared to conventional backsheet panels, suiting the series for harsh climate conditions. ## Cons - **Efficiency trails top competitors** - Maximum efficiency of 23.7% lags comparable Tier-1 models: AIKO Stellar 2N+78 reaches 25.1%, Gokin GK-4-78HGBD 24.3%, and Gamko GKA210N132 24.14% - a gap of 0.4-1.4 percentage points that can translate into lower installed capacity for the same roof area. - **Series discontinued** - The JT SXt(B) series has been discontinued, meaning limited availability of service support, spare/matching modules, and difficulty sourcing identical panels for future system expansion or warranty claims. ## About this series The JT SXt(B) series consists of dual-glass monocrystalline modules engineered for installations that demand maximum durability and stable energy yield over decades of operation. The use of **N-type TOPCon cells with multi-busbar technology** delivers high conversion efficiency while reducing resistive losses, translating into genuinely higher energy production under partial shading or elevated operating temperatures. Thanks to **bifacial energy harvesting**, the panels also capture light reflected from the ground, boosting total yield by up to roughly twenty percent compared to monofacial designs, which directly lowers the project's LCOE. The dual-glass construction eliminates the risk of PID degradation and provides better mechanical resistance and longer service life than conventional backsheet panels. The modules undergo **double full EL inspection**, minimizing the risk of hidden cell microcracks. The series also stands out for its **high resistance to snow, wind loads, and hail impact**, making it well suited to demanding climatic conditions. This is a solution built for solar farms and large commercial installations, where low failure rates, predictable long-term power degradation, and maximizing revenue per square meter of roof or ground space are essential. ## Notable figures - At 23.4% efficiency, this panel is 0.7pp below the \*\*TOPCon 750-800W\*\* median of 24.1% - Power density of 233.6 W/m² is 7.8 W/m² below \*\*TOPCon 750-800W\*\* median (241.4 W/m²) - needs more roof space - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 750-800W\*\* panels - At 40.0 kg (1.7 kg above \*\*TOPCon 750-800W\*\* median of 38.3 kg), requires checking roof load capacity - Bifaciality factor of 85% can add 4-13% extra yield with reflective mounting surface ## Questions ### Is the Jetion JT SXt(B) series still available for purchase? The JT SXt(B) series has been discontinued from current production and replaced by newer models in Jetion's lineup. Panels may still be available from distributors as remaining stock, but it's worth confirming current availability and production date with the seller, since stock of specific power ratings and batches is limited. ### How does the TOPCon technology used in JT SXt(B) differ from classic PERC cells? N-type TOPCon cells feature an additional passivation layer that reduces carrier recombination, delivering higher conversion efficiency than standard P-type PERC cells. In practice, this means higher energy yield per roof area, lower losses at elevated operating temperatures, and slower power degradation over time. ### How much extra energy does the bifacial design of JT SXt(B) actually deliver? Thanks to the dual-glass construction and bifacial technology, JT SXt(B) panels also capture light reflected from the mounting surface. Depending on ground albedo and installation height, this can boost total energy yield by roughly ten to over twenty percent compared to monofacial panels of the same nominal power. ### What warranty comes with Jetion JT SXt(B) panels? Jetion provides a 12-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty guaranteeing a minimum production level throughout that period. This is one of the longer warranty terms available among dual-glass modules on the market. ### Are JT SXt(B) panels suitable for large-scale solar farm installations? Yes, the JT SXt(B) series, with power ratings up to 800 Wp, was designed primarily for large commercial installations and solar farms. The dual-glass construction eliminates PID degradation risk, and high resistance to snow, wind, and hail loads makes these panels well-suited to demanding utility-scale conditions. ### Are JT SXt(B) modules resistant to cell microcracks and manufacturing defects? Every panel in the JT SXt(B) series undergoes double full EL (electroluminescence) inspection, allowing cells with hidden microcracks to be detected and rejected before shipping. The dual-glass construction also provides greater mechanical rigidity and better cell protection than back-sheet panels. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/2c8692bb31964e09a793e95f0569da69-793815cbc2b7.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +15 W, cooler, +1.7 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +10 W, cooler, +1.5 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | Cooler, +1.4 pp | | [AIKO AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 W | Cooler, +1.2 pp | | [Trina Solar TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 W | -30 W, cooler, +1.1 pp | | [AIKO AIKO-A785-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a785-grh78dw) | 785 W | Cooler, +1.0 pp | | [Gokin GK-4-78HGBD-780M](https://comparepv.com/panel/gokin-gk-4-78hgbd-780m) | 780 W | Cooler, lighter, +0.9 pp | | [AIKO AIKO-A780-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a780-grh78dw) | 780 W | -10 W, cooler, +0.9 pp | | [Jetion JT755SLk(B)](https://comparepv.com/panel/jetion-jt755slk-b) | 755 W | Cooler, lighter, +0.9 pp | | [Trina Solar TSM-NEG21C.20Q-755](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-755) | 755 W | -35 W, cooler, +0.9 pp | | [Jetion JT775SXt(B)](https://comparepv.com/panel/jetion-jt775sxt-b) | 775 W | -15 W, -0.5 pp | | [Jetion JT780SXt(B)](https://comparepv.com/panel/jetion-jt780sxt-b) | 780 W | -10 W, -0.3 pp | | [Jetion JT785SXt(B)](https://comparepv.com/panel/jetion-jt785sxt-b) | 785 W | Very close match | | [Jetion JT795SXt(B)](https://comparepv.com/panel/jetion-jt795sxt-b) | 795 W | Very close match | | [Jetion JT800SXt(B)](https://comparepv.com/panel/jetion-jt800sxt-b) | 800 W | +10 W, +0.3 pp | --- Source: https://comparepv.com/panel/jetion-jt790sxt-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.