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Jetion JT580SJk(B)
Jetion Brand review

JT580SJk(B)

580 Wp HJT Bifacial 85%
ComparePV verdict

Light for its output, no clear weak spot

Rank 3,617 of 14,005
Compare panels Datasheet PDF
Power (Wp)
580
Typical for its class
Efficiency (%)
22.70
Typical · median 22.48%
Density (Wp/m²)
227.0
Typical · median 224.8
Temp (%/°C)
-0.240
Typical · median -0.240
Weight (kg)
30.7
Strong · 1.9 kg below median
Warranty (yrs)
30
Typical · median 30 yrs

The JT SJk(B) series combines N-type heterojunction (HJT) mono cell technology with a dual-glass, bifacial module design, making it one of the more advanced solutions currently available on the photovoltaic market. The use of N-type HJT cells together with half-cut and multi-busbar cell technology reduces resistive losses and increases energy yield even under unfavorable morning, evening, or overcast lighting conditions. Thanks to its bifacial dual-glass construction, these panels capture additional energy reflected from the ground surface, which is particularly beneficial for ground-mount installations, light-colored rooftops, and systems with elevated albedo. The series also stands out for its very low temperature coefficient of power, allowing it to maintain high performance even on hot days, when conventional modules lose efficiency. The dual-glass construction additionally provides resistance to LID and PID degradation, translating into stable operation and long service life for the installation. The reinforced frame and tempered glass withstand extreme snow and wind loads, making this series suitable for both commercial installations and solar power plants in demanding climatic conditions. This is a solution for investors seeking maximum long-term return on investment.

Ranking

32 panels in the segment HJT 550-600 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.70% 22.48% Typical 3,307
Power density 227.0 224.8 Typical 3,352
Temperature coefficient -0.240 -0.240 Typical 13
Weight per kWp 52.9 55.2 Strong · top 8% 6,638
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 · 0 caution
Best for

Utility-scale, commercial, hot-climate and shaded-installations.

Strengths
52.9 kg per kWp

Top 8% of the HJT 550-600 W segment, against a median of 55.2. Ranked 6,638th in the whole database.

What owners get
N-type HJT cells with very high efficiency

Efficiency of 22.3-23.1% places the series at the top of the segment, above comparable modules such as Talesun TM7G72M (22.8%), Horay Solar HS 182-144 (22.8%) and AE Solar HORIZON CMD-144BDS (22.86%). N-type HJT technology also offers a lower temperature coefficient than conventional PERC, translating into higher energy yield on hot days.

Bifaciality ratio above 90%

The dual-glass bifacial design recovers over 90% of power from the rear side, 2-4 percentage points higher than typical bifacial PERC modules. This delivers a real energy gain in ground-mount installations and on light-colored, high-albedo rooftop surfaces.

30-year linear power warranty

A 15-year product warranty combined with a 30-year linear power warranty matches the current premium standard for N-type bifacial modules and supports predictable LCOE modeling over a long investment horizon.

Resistance to LID and PID degradation

The dual-glass construction combined with N-type HJT technology significantly reduces light-induced (LID) and potential-induced (PID) degradation, resulting in a more stable annual degradation curve compared to standard single-glass PERC modules.

Established Tier-1 manufacturer

Jetion Solar has operated since 2004 and holds Tier-1 bankable status, reducing financial and service risk for long-term PPA agreements and project financing.

Notes from the database
  • At 22.7% efficiency, this panel is on par with typical HJT 550-600W modules
  • At 227.0 W/m² power density, roof space requirements are typical for HJT 550-600W panels
  • Temperature coefficient of -0.24%/°C matches the HJT 550-600W median
  • At 30.7 kg, this panel is 1.9 kg lighter than HJT 550-600W median (32.6 kg) - easier handling during installation
  • 85% bifaciality enables rear-side power generation, boosting yield by 4-13% on reflective surfaces

Specifications

Open datasheet PDF
Nominal power (Pmax) 580 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.70 % Typical Segment median 22.48%
Vmpp · Impp 34.50 V · 16.82 A Operating point at max power
Voc · Isc 41.00 V · 17.69 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1961×1303×35 mm · 2.56 m² of roof
Weight 30.7 kg Strong Strong · 1.9 kg below median
Cells 108 · HJT Monocrystalline
Bifaciality 85 % Rear output as a share of front
Coefficient Pmax -0.240 %/°C Typical median -0.240 of its segment
Coefficient Voc · Isc -0.240 · 0.040 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 90.3 % Equals 524 W guaranteed
Degradation 1.00 → 0.30 % 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 580 Wp appear here. The rest cover the whole series.

30-Year Linear Performance Warranty (CNBM Jetion) 30-Year Linear Performance Warranty (CNBM Jetion) Whole series JT580SJk(B) I-V Curves at Different Irradiance JT580SJk(B) I-V Curves at Different Irradiance Whole series JT580SJk(B) I-V Curves at Different Temperatures JT580SJk(B) I-V 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
-0.240 %/°C against a segment median of -0.240
-
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 JT580SJk(B) 580 W 22.70% -0.240 30.7 kg You are here
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg Hotter, lighter, +2.1 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg -25 W, lighter, +1.9 pp
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg +50 W, hotter, +1.7 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg -30 W, lighter, +1.7 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg -40 W, lighter, +1.7 pp
JT570SJk(B) 570 W 22.30% -0.240 30.7 kg -10 W, -0.4 pp
JT575SJk(B) 575 W 22.50% -0.240 30.7 kg Very close match
JT585SJk(B) 585 W 22.90% -0.240 30.7 kg Very close match
JT590SJk(B) 590 W 23.10% -0.240 30.7 kg +10 W, +0.4 pp
RS9V-M-DG-590 590 W 23.08% -0.300 31.2 kg +10 W, hotter, +0.4 pp
RS9V-M-DG-585 585 W 22.88% -0.300 31.2 kg Hotter
GKA210N108-580W 580 W 22.71% -0.340 25.5 kg Hotter, lighter
RS9V-M-DG-580 580 W 22.69% -0.300 31.2 kg Hotter
GKA210N108-575W 575 W 22.51% -0.340 25.5 kg Hotter, lighter
RS9V-M-DG-575 575 W 22.49% -0.300 31.2 kg Hotter, -0.2 pp

Found 31 panels of the same or similar size to this one, within ±10 mm. See them here Found 41 panels of the same or similar size to this one, within ±25 mm. See them here Found 41 panels of the same or similar size to this one, within ±50 mm. See them here Found 85 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How does Jetion JT SJk(B) HJT cell technology differ from classic PERC or TOPCon cells?
HJT (heterojunction) N-type cells combine crystalline silicon with amorphous silicon layers, resulting in lower resistive losses and higher efficiency than PERC, plus better high-temperature performance than TOPCon. This gives the JT SJk(B) series higher energy yield in low light, cloudy conditions, and hot weather, translating into greater annual energy production.
Does the bifacial design of JT SJk(B) panels actually increase energy production?
Yes, the dual-glass construction allows these panels to capture additional reflected light from the rear side. The gain is highest over bright surfaces, such as white roofing, gravel, or snow, where output can increase by several percent to over ten percent compared to a standard monofacial panel with the same front-side rated power.
What warranty comes with Jetion JT SJk(B) panels and what does it cover?
The manufacturer provides a 15-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. This means that even after 30 years of operation, the panel is guaranteed to still produce a specified percentage of its initial rated power, one of the longer warranty periods currently offered in the PV market.
Are 590 Wp JT SJk(B) panels suitable for ground-mount installations and solar farms?
Yes, the high unit power of up to 590 Wp combined with bifaciality makes the JT SJk(B) series especially effective in large ground-mount installations and solar farms, where modules are raised on racking above high-albedo ground surfaces. Fewer panels needed to reach a given target power also reduces mounting structure and wiring costs.
How do Jetion HJT panels perform on hot days compared to standard modules?
The JT SJk(B) series has a very low power temperature coefficient, characteristic of HJT technology, meaning a smaller drop in output as module temperature rises. In practice, on hot, sunny days these panels lose noticeably less power than classic PERC modules, which matters for roofs that heat up significantly in summer.
Does the dual-glass construction of JT SJk(B) panels improve durability and resistance to degradation?
Yes, the dual-glass build with tempered glass on both sides reduces LID and PID degradation, so the panel loses power more slowly over its service life. This construction also offers better mechanical resistance to snow and wind loads and microcracking, resulting in longer and more stable system performance.
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