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Jetion Brand review

JT470SIt(B)

470 Wp TOPCon Bifacial 85%
ComparePV verdict

Middle of its segment, heavy for its output

Rank 9,480 of 14,129
Compare panels Datasheet PDF
Power (Wp)
470
Typical for its class
Efficiency (%)
21.70
Weak · bottom 9%
Density (Wp/m²)
217.2
Weak · bottom 10%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
28.5
Weak · 4.5 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The JT SIt(B) series consists of dual-glass monocrystalline modules built around N-type TOPCon multi-busbar cells, engineered for installations expected to perform reliably for decades without significant output loss. The N-type architecture delivers noticeably lower LID/LETID degradation, so the panel retains its rated power longer, sparing project owners unpleasant surprises after several years of operation. The glass-glass construction, combined with refined cell manufacturing and advanced encapsulation materials, substantially reduces the risk of PID effect, backed by double full-scale EL inspection during production. The modules are bifacial, with a high bifaciality factor that captures additional energy from reflected light and meaningfully lowers the installation's LCOE, particularly on bright surfaces or in ground-mount and industrial rooftop projects. A reinforced frame and glass withstand heavy snow and wind loads and pass hail-resistance testing, making the series a solid choice for demanding climate conditions. This is a solution for installers and investors seeking high reliability, predictable long-term energy yield, and strong manufacturer warranties, without compromising on aesthetics or compatibility with common 1500V DC mounting systems.

Ranking

1,096 panels in the segment TOPCon 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.70% 22.52% Weak · bottom 9% 7,485
Power density 217.2 225.2 Weak · bottom 10% 7,448
Temperature coefficient -0.290 -0.290 Typical 2,220
Weight per kWp 60.6 52.2 Weak · bottom 3% 12,595
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 6 caution
Best for

Commercial and utility-scale.

Not ideal for

Weight-limited structures, tight roof space and roofs where every square metre has to count.

Watch-outs
60.6 kg per kWp

Bottom 3% of the TOPCon 450-500 W segment, against a median of 52.2. Ranked 12,595th in the whole database.

21.70% module efficiency

Bottom 9% of the TOPCon 450-500 W segment, against a median of 22.52%. Ranked 7,485th in the whole database.

217.2 watts per square metre

Bottom 10% of the TOPCon 450-500 W segment, against a median of 225.2.

What owners get
N-type TOPCon cells with low degradation

N-type TOPCon technology reduces LID/LETID degradation compared to older P-type PERC cells, allowing the module to maintain its rated power longer and lowering the risk of unexpected output loss in the early years of operation.

30-year linear power warranty

The manufacturer offers a 30-year power warranty, exceeding the typical 25-year segment standard common among comparable series from this period, giving investors a longer horizon of predictable energy production.

Bifacial design lowering LCOE

The glass-glass construction with a high bifaciality factor captures additional energy from reflected light, particularly beneficial in ground-mount installations and on bright surfaces, meaningfully reducing the LCOE of generated energy.

Structural robustness and double EL inspection

The reinforced frame and glass pass hail, snow, and wind load tests, and production includes double, full EL inspection, significantly reducing the risk of PID effect and cell micro-damage before shipment.

Tier-1 bankable manufacturer since 2004

Jetion has operated since 2004 and holds tier-1 bankable status, easing project financing through banks and investment funds, and the modules are compatible with standard 1500V DC mounting systems.

Trade-offs
Series discontinued

The JT SIt(B) series has been discontinued, meaning limited availability of replacement modules for warranty claims or system expansion, and warranty service may require longer fulfillment times.

Efficiency below some peers in this power class

The maximum efficiency of 22.2% is lower than comparable 460-480 Wp models such as the Sunket SKT460~480M10-120D3 (22.24%) and the Gamko GKA96N-PRO (24.02%), meaning lower energy yield for the same roof area.

Product warranty shorter than market leaders

The 12-year product warranty is shorter than the 15-25 year standard currently offered by leading tier-1 manufacturers, creating some inconsistency in investor protection against mechanical or material defects relative to the 30-year power warranty.

Notes from the database
  • Module efficiency of 21.7% is 0.8pp below average for TOPCon 450-500W panels (median: 22.5%)
  • Power density of 217.2 W/m² is 8.0 W/m² below TOPCon 450-500W median (225.2 W/m²) - needs more roof space
  • At -0.29%/°C, hot weather performance is typical for TOPCon 450-500W panels
  • Weight of 28.5 kg is 4.5 kg above TOPCon 450-500W median (24.0 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) 470 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.70 % Weak Segment median 22.52%
Vmpp · Impp 34.90 V · 13.47 A Operating point at max power
Voc · Isc 42.30 V · 14.24 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1908×1134×30 mm · 2.16 m² of roof
Weight 28.5 kg Weak Weak · 4.5 kg above median
Cells 120 · 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 411 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

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 JT470SIt(B) 470 W 21.70% -0.290 28.5 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, lighter, +3.3 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +3.1 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, lighter, +3.0 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg +35 W, lighter, +3.0 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, lighter, +2.8 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, lighter, +2.8 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +30 W, lighter, +2.8 pp
JT460SIt(B) 460 W 21.30% -0.290 28.5 kg -10 W, -0.4 pp
JT465SIt(B) 465 W 21.50% -0.290 28.5 kg Very close match
JT475SIt(B) 475 W 22.00% -0.290 28.5 kg +0.3 pp
JT480SIt(B) 480 W 22.20% -0.290 28.5 kg +10 W, +0.5 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +90 W, lighter, +3.1 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +85 W, lighter, +2.9 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +80 W, lighter, +2.7 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +70 W, lighter, +2.7 pp
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +70 W, lighter, +2.7 pp

Found 751 panels of the same or similar size to this one, within ±10 mm. See them here Found 760 panels of the same or similar size to this one, within ±25 mm. See them here Found 911 panels of the same or similar size to this one, within ±50 mm. See them here Found 1494 panels of the same or similar size to this one, within ±100 mm. See them here

About the JT SIt(B) series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

Are Jetion JT SIt(B) solar panels still available for purchase?
No, the JT SIt(B) series has been discontinued by Jetion and replaced with newer models. Availability is now limited to remaining distributor stock. If you plan to expand an existing installation, check current stock levels with your supplier, since purchasing identical modules in the future may not be possible.
How does N-type TOPCon technology in the JT SIt(B) differ from standard PERC cells?
The N-type TOPCon cells used in the JT SIt(B) series show significantly lower LID and LETID degradation compared to typical P-type PERC modules. This means the panel maintains its rated power output longer, with minimal efficiency loss during the first years of operation. TOPCon technology also delivers higher conversion efficiency and better performance under high temperatures.
Does the bifacial design of the JT SIt(B) actually increase energy yield?
Yes, the glass-glass construction with a high bifaciality factor allows the rear side of the panel to capture light reflected off the ground surface. The additional energy gain depends on the albedo of the mounting surface and the panel's height above ground, but on bright industrial rooftops or ground-mount installations it can meaningfully lower the system's LCOE, sometimes by several percent.
What warranty does Jetion offer on the 480 Wp JT SIt(B) panels?
Jetion provides a 12-year product warranty covering material and workmanship defects, plus a 30-year power performance warranty. This means that even after three decades of operation, the module is guaranteed to retain a specified percentage of its initial rated power, giving investors predictable long-term return on investment.
Can JT SIt(B) modules withstand heavy snow and hail loads?
Yes, the reinforced frame and glass-glass construction of the JT SIt(B) series are designed for demanding climate conditions and pass snow load, wind load, and hail impact resistance testing. This makes the panels suitable for both rooftop and ground-mount installations in regions with variable weather conditions.
Are Jetion JT SIt(B) panels compatible with common mounting systems?
Yes, JT SIt(B) series modules are compatible with standard 1500V DC mounting systems, simplifying integration with existing inverter setups and racking infrastructure. As a Tier 1 manufacturer based in China, Jetion ensures compliance with widely used industry standards, streamlining system design and installation.
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