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Jetion Brand review

JT780SXt(B)

780 Wp TOPCon Bifacial 85%
ComparePV verdict

Light for its output, no clear weak spot

Rank 129 of 14,005
Compare panels Datasheet PDF
Power (Wp)
780
Strong · top 1%
Efficiency (%)
23.10
Typical · median 22.90%
Density (Wp/m²)
230.7
Typical · median 228.6
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
40.0
Strong · top 25%
Warranty (yrs)
30
Typical · median 30 yrs

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.

Ranking

527 panels in the segment TOPCon 680-880 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.10% 22.90% Typical 1,570
Power density 230.7 228.6 Typical 1,683
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 51.3 53.1 Strong · top 25% 4,670
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 2 caution
Best for

Utility-scale, commercial and cold-climate.

Strengths
51.3 kg per kWp

Top 25% of the TOPCon 680-880 W segment, against a median of 53.1.

What owners get
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.

Trade-offs
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.

Notes from the database
  • At 23.1% efficiency, this panel is 1.0pp below the TOPCon 750-800W median of 24.1%
  • 230.7 W/m² power density is 10.7 W/m² below TOPCon 750-800W median (241.4 W/m²) - requires larger installation area
  • Temperature coefficient of -0.29%/°C matches the TOPCon 750-800W median
  • Weight of 40.0 kg is 1.7 kg above TOPCon 750-800W median (38.3 kg) - verify structural support
  • Bifaciality factor of 85% can add 4-13% extra yield with reflective mounting surface

Specifications

Open datasheet PDF
Nominal power (Pmax) 780 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.10 % Typical Segment median 22.90%
Vmpp · Impp 45.10 V · 17.30 A Operating point at max power
Voc · Isc 53.60 V · 18.50 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2595×1303×33 mm · 3.38 m² of roof
Weight 40.0 kg Strong Strong · top 25%
Cells 144 · TOPCon Monocrystalline
Bifaciality 85 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.240 · 0.045 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 682 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Jetion in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 780 Wp appear here. The rest cover the whole series.

CNBM Junxin Linear Power Warranty Added Value CNBM Junxin Linear Power Warranty Added Value Whole series JT780SXt(B) IV Curves at Different Irradiance Levels JT780SXt(B) IV Curves at Different Irradiance Levels Whole series JT780SXt(B) IV Curves at Different Temperatures JT780SXt(B) IV Curves at Different Temperatures Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-
With bifacial gain
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.290 %/°C against a segment median of -0.290
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Jetion JT780SXt(B) 780 W 23.10% -0.290 40.0 kg You are here
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +25 W, cooler, +2.0 pp
AIKO-A800-GRH78Dw 800 W 24.90% -0.260 39.8 kg +20 W, cooler, +1.8 pp
AIKO-A795-GRH78Dw 795 W 24.80% -0.260 39.8 kg +15 W, cooler, +1.7 pp
AIKO-A790-GRH78Dw 790 W 24.60% -0.260 39.8 kg +10 W, cooler, +1.5 pp
TSM-NEG21C.20Q-760 760 W 24.50% -0.260 38.3 kg -20 W, cooler, +1.4 pp
AIKO-A785-GRH78Dw 785 W 24.40% -0.260 39.8 kg Cooler, +1.3 pp
GK-4-78HGBD-780M 780 W 24.30% -0.260 38.7 kg Cooler, lighter, +1.2 pp
AIKO-A780-GRH78Dw 780 W 24.30% -0.260 39.8 kg Cooler, +1.2 pp
JT755SLk(B) 755 W 24.30% -0.240 36.4 kg Cooler, lighter, +1.2 pp
TSM-NEG21C.20Q-755 755 W 24.30% -0.260 38.3 kg -25 W, cooler, +1.2 pp
JT775SXt(B) 775 W 22.90% -0.290 40.0 kg -0.2 pp
JT785SXt(B) 785 W 23.20% -0.290 40.0 kg Very close match
JT790SXt(B) 790 W 23.40% -0.290 40.0 kg +10 W, +0.3 pp
JT795SXt(B) 795 W 23.50% -0.290 40.0 kg +15 W, +0.4 pp
JT800SXt(B) 800 W 23.70% -0.290 40.0 kg +20 W, +0.6 pp

Found 6 panels of the same or similar size to this one, within ±10 mm. See them here Found 6 panels of the same or similar size to this one, within ±25 mm. See them here Found 6 panels of the same or similar size to this one, within ±50 mm. See them here Found 6 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
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.
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