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Jetion JT435SYk(B)
Jetion Brand review

JT435SYk(B)

435 Wp HJT Bifacial 85%
ComparePV verdict

Space saver, no clear weak spot

Rank 8,755 of 14,005
Compare panels Datasheet PDF
Power (Wp)
435
Typical for its class
Efficiency (%)
22.70
Strong · top 14%
Density (Wp/m²)
226.8
Strong · top 12%
Temp (%/°C)
-0.240
Typical · median -0.240
Weight (kg)
23.0
Typical · median 23.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The JT SYk(B) series combines bifacial heterojunction (HJT) cells built on N-type wafers with a dual-glass construction, giving installers a module engineered for stable long-term performance in demanding climates. Half-cut cells paired with a multi-busbar layout reduce resistive losses and lower the risk of microcracks, translating into more reliable operation across the system's lifetime. This design is especially attractive for investors looking to maximize energy yield from limited roof or ground space - bifacial energy harvesting captures reflected light from the surface below, which matters most on light-colored roofs, gravel surfaces, or elevated ground-mount structures. The panels also perform well under low-irradiance conditions, a relevant advantage in a climate with frequent overcast days. The glass-glass build with POE encapsulation virtually eliminates PID and LID degradation risk, backed by the manufacturer's 30-year linear power warranty and 15-year product warranty. Mechanical durability supports snow loads up to 5400 Pa and wind loads up to 2400 Pa, making the series suitable for both pitched residential roofs and utility-scale installations with elevated structural requirements.

Ranking

113 panels in the segment HJT 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.70% 22.20% Strong · top 14% 3,307
Power density 226.8 221.6 Strong · top 12% 3,466
Temperature coefficient -0.240 -0.240 Typical 13
Weight per kWp 52.9 52.4 Typical 6,583
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

7 positive · 1 caution
Best for

Residential, commercial and shaded-installations.

Strengths
226.8 watts per square metre

Top 12% of the HJT 400-450 W segment, against a median of 221.6.

22.70% module efficiency

Top 14% of the HJT 400-450 W segment, against a median of 22.20%.

What owners get
High HJT cell efficiency

Efficiency up to 22.9% places the JT SYk(B) series at the top of the peer set - ahead of Lina Energy LEPV 132 ULTRA PREMIUM (22.37%) and JA Solar JAM54D40 (22.5%), and close to Luxor Solar ECO LINE TOPCon (22.86%). N-type HJT cells offer a lower temperature coefficient than legacy PERC or TOPCon, delivering a real yield advantage during summer months.

Dual-glass bifacial construction

Bifacial modules with POE encapsulation capture additional energy from albedo (relevant on light-colored roofs, gravel, or ground-mount structures), while practically eliminating PID and LID degradation risk over the module's lifetime.

30-year linear power warranty

The manufacturer guarantees power retention over 30 years, standing out against many comparable modules that typically offer 25 years. Combined with Tier-1 bankable status, this is a strong argument for project financing on utility-scale installations.

High mechanical load resistance

Rated load capacity of up to 5400 Pa (snow) and 2400 Pa (wind) makes the series suitable both for sloped roofs in harsh winter conditions and for PV farms with elevated structural requirements, typical of the Polish climate.

Established manufacturer since 2004

Jetion has operated in the PV market since 2004 and holds Tier-1 bankable status, reducing risk for investors compared with lesser-known manufacturers newly entering the European market.

Trade-offs
Standard, not extended, product warranty

The 15-year product warranty is a baseline value for the premium HJT/TOPCon segment - some competing Tier-1 series (e.g., from JA Solar or Luxor Solar) are moving to a 20-25 year product warranty standard in 2025-2026, so despite the strong power warranty, the product warranty itself does not differentiate the JT SYk(B) series in the market.

Notes from the database
  • Efficiency of 22.7% matches the HJT 400-450W median
  • 226.8 W/m² power density - 5.2 W/m² more than HJT 400-450W median (221.6 W/m²), more power per roof area
  • Temperature coefficient of -0.24%/°C matches the HJT 400-450W median
  • Bifacial design (85% factor) captures reflected light - adds 4-13% yield on ground-mount or white roof
  • In the top 24% for efficiency among all HJT panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 435 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.70 % Strong Segment median 22.20%
Vmpp · Impp 25.65 V · 16.96 A Operating point at max power
Voc · Isc 30.55 V · 17.82 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1750×1096×30 mm · 1.92 m² of roof
Weight 23.0 kg Typical Typical · median 23.0 kg
Cells 80 · 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 393 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 435 Wp appear here. The rest cover the whole series.

CNBM Jetion Linear Warranty Added Value CNBM Jetion Linear Warranty Added Value 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 JT435SYk(B) 435 W 22.70% -0.240 23.0 kg You are here
JAT54S40-485/LR 485 W 24.30% -0.260 19.3 kg +50 W, lighter, +1.6 pp
AIKO-A485-MCE54Mw 485 W 24.30% -0.260 21.0 kg +50 W, hotter, +1.6 pp
AIKO-A485-MAH54Mw 485 W 24.30% -0.260 21.5 kg +50 W, hotter, +1.6 pp
GK-5-54HG-485M 485 W 24.30% -0.260 21.0 kg +50 W, hotter, +1.6 pp
ZEUS 3.0+ 108 485WP 485 W 24.30% -0.260 24.2 kg +50 W, hotter, +1.6 pp
JT420SYk(B) 420 W 21.90% -0.240 23.0 kg -15 W, -0.8 pp
JT425SYk(B) 425 W 22.10% -0.240 23.0 kg -10 W, -0.6 pp
JT430SYk(B) 430 W 22.40% -0.240 23.0 kg -0.3 pp
JT440SYK(B) 440 W 22.90% -0.240 23.0 kg Very close match
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +75 W, +2.3 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +60 W, hotter, +2.1 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +70 W, +2.0 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +55 W, hotter, +1.8 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +65 W, +1.8 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +65 W, hotter, +1.8 pp

Found 53 panels of the same or similar size to this one, within ±10 mm. See them here Found 67 panels of the same or similar size to this one, within ±25 mm. See them here Found 3671 panels of the same or similar size to this one, within ±50 mm. See them here Found 4165 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How does the HJT cell technology in Jetion JT SYk(B) panels differ from popular PERC or TOPCon modules?
HJT (heterojunction) combines a crystalline silicon layer with thin layers of amorphous silicon, delivering higher efficiency and a lower temperature coefficient than PERC. Compared to TOPCon, HJT typically shows a lower temperature coefficient and slower degradation over time, resulting in higher energy yield on hot days and more stable performance throughout the system's operating life.
Does the bifacial JT SYk(B) panel actually generate more energy than a standard monofacial module?
Yes, thanks to bifacial cells the panel captures additional energy from light reflected off the ground, roof, or surrounding surfaces on its rear side. The actual gain depends on the albedo of the mounting surface and the module's elevation - on light-colored gravel or ground-mounted structures, the extra yield can add several to over ten percent compared to a monofacial panel of the same rated power.
What warranty comes with Jetion JT SYk(B) panels and what does it cover exactly?
The manufacturer offers a 15-year product warranty covering material and workmanship defects, plus a 30-year linear power warranty guaranteeing a minimum energy output level over the years of operation. Thanks to POE encapsulation and the dual-glass construction, the risk of PID and LID degradation is significantly reduced, which realistically supports meeting the terms of this long warranty.
Can JT SYk(B) panels withstand heavy snow loads in harsh winter climates?
Yes, the JT SYk(B) series has a certified snow load rating of up to 5400 Pa, well above typical roof requirements in colder climates. It also withstands wind loads up to 2400 Pa, making the panels suitable for both sloped roofs in high-snowfall regions and utility-scale solar farms exposed to strong winds.
Does the dual-glass construction of Jetion panels require special mounting compared to standard backsheet modules?
Dual-glass construction is heavier and more rigid than backsheet modules, so it's worth checking the mounting structure's load capacity and using clamps sized for the panel's thickness. Otherwise installation is standard - the dual-glass design additionally boosts mechanical durability and lifespan by eliminating the delamination risk typical of backsheet laminates.
What type of installation is the 440 Wp JT SYk(B) panel best suited for?
A 440 Wp panel with HJT technology and bifacial capability is especially well suited where maximizing energy yield from limited space matters - for example, small sloped roofs, ground-mounted structures, carports, or solar farms on light-colored ground. The high power output per module also reduces the number of panels needed to reach a target system capacity.
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