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Jetion JT505SNk(B)
Jetion Brand review

JT505SNk(B)

505 Wp HJT Bifacial 85%
ComparePV verdict

Middle of its segment, modest efficiency

Rank 7,007 of 14,129
Compare panels Datasheet PDF
Power (Wp)
505
Weak · bottom 22%
Efficiency (%)
22.10
Weak · bottom 8%
Density (Wp/m²)
221.5
Weak · bottom 8%
Temp (%/°C)
-0.240
Typical · median -0.240
Weight (kg)
27.4
Weak · bottom 12%
Warranty (yrs)
30
Typical · median 30 yrs

The JT SNk(B) series comprises dual-glass photovoltaic modules built on heterojunction (HJT) technology, combining thin-film HJT layers with N-type monocrystalline silicon. Thanks to bifacial cells, these panels capture additional energy from light reflected onto the rear side of the module, resulting in noticeably higher energy yield compared to conventional single-sided designs. The design, based on HJT technology and a special anti-reflective glass, ensures stable performance even under low irradiance conditions - in the morning, evening, or on cloudy days - making the JT SNk(B) series particularly well suited to variable sunlight conditions. The panels also stand out for their very low temperature coefficient, limiting power losses on hot days, along with strong resistance to LID and PID degradation, translating into long-term stable energy production. A robust mechanical structure, rated to withstand snow loads up to 5400 Pa and wind loads up to 2400 Pa, makes them suitable for both rooftop installations and ground-mounted solar farms. Backed by a 30-year power output warranty with guaranteed degradation below 10%, the JT SNk(B) series is an attractive choice for investors seeking low LCOE and high reliability over a multi-decade investment horizon.

Ranking

43 panels in the segment HJT 500-550 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.10% 22.90% Weak · bottom 8% 6,076
Power density 221.5 229.5 Weak · bottom 8% 6,019
Temperature coefficient -0.240 -0.240 Typical 13
Weight per kWp 54.3 53.1 Weak · bottom 12% 8,585
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 · 5 caution
Best for

Commercial, utility-scale and hot-climate.

Not ideal for

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

Watch-outs
22.10% module efficiency

Bottom 8% of the HJT 500-550 W segment, against a median of 22.90%. Ranked 6,076th in the whole database.

221.5 watts per square metre

Bottom 8% of the HJT 500-550 W segment, against a median of 229.5. Ranked 6,019th in the whole database.

54.3 kg per kWp

Bottom 12% of the HJT 500-550 W segment, against a median of 53.1.

What owners get
HJT technology with N-type cells

Heterojunction (HJT) technology combined with N-type monocrystalline silicon delivers a very low temperature coefficient and strong resistance to LID and PID degradation, resulting in more stable energy output on hot days and over the module's operating lifetime compared to conventional PERC cells.

Bifacial dual-sided cells

The dual-glass design with bifacial cells captures additional energy from reflected light on the rear side of the module, which is particularly valuable under variable irradiance conditions - mornings, evenings, and cloudy days.

30-year power output warranty

A 30-year power warranty with degradation guaranteed below 10% clearly exceeds the 25-year industry standard offered by many tier-1 manufacturers, lowering LCOE over the long-term investment horizon.

Robust mechanical construction

Rated for snow loads up to 5400 Pa and wind loads up to 2400 Pa, the JT SNk(B) series is suitable for both rooftop installations and ground-mounted PV farms in demanding climatic conditions.

Long-established tier-1 manufacturer

Jetion Solar has operated since 2004 and holds bankable tier-1 status, increasing manufacturer credibility and easing project financing for installations using this series.

Trade-offs
Efficiency below segment leaders

Efficiency of 22.1-23% is lower than comparable 525 Wp modules such as the Jolywood JW-HD108N-R2 (23.6%) or Jinko Tiger Neo (23.61%), meaning a larger module footprint for the same power output and potentially higher BoS cost per kWp.

HJT technology typically costs more to produce

Compared with TOPCon-based peer comparables (VSUN, Jinko), HJT technology traditionally carries higher manufacturing costs, which can translate into a higher purchase price per Wp despite comparable or lower efficiency figures.

Notes from the database
  • At 22.1% efficiency, this panel is 0.8pp below the HJT 500-550W median of 22.9%
  • 221.5 W/m² power density is 8.0 W/m² below HJT 500-550W median (229.5 W/m²) - requires larger installation area
  • At -0.24%/°C, hot weather performance is typical for HJT 500-550W panels
  • 85% bifaciality enables rear-side power generation, boosting yield by 4-13% on reflective surfaces
  • In the top 43% for efficiency among all HJT panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 505 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.10 % Weak Segment median 22.90%
Vmpp · Impp 30.35 V · 16.64 A Operating point at max power
Voc · Isc 36.15 V · 17.54 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1750×1303×35 mm · 2.28 m² of roof
Weight 27.4 kg Weak Weak · bottom 12%
Cells 96 · 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 456 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 505 Wp appear here. The rest cover the whole series.

JT520SNk(B) IV Curves at Different Irradiance Levels JT520SNk(B) IV Curves at Different Irradiance Levels Whole series JT520SNk(B) IV Curves at Different Temperatures JT520SNk(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
-0.240 %/°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 JT505SNk(B) 505 W 22.10% -0.240 27.4 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Lighter, +2.9 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Hotter, lighter, +2.7 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Lighter, +2.6 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg Hotter, lighter, +2.6 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +50 W, lighter, +2.5 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Hotter, lighter, +2.4 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Lighter, +2.4 pp
JT510SNk(B) 510 W 22.40% -0.240 27.4 kg +0.3 pp
JT515SNk(B) 515 W 22.60% -0.240 27.4 kg +10 W, +0.5 pp
JT520SNk(B) 520 W 22.80% -0.240 27.4 kg +15 W, +0.7 pp
JT525SNk(B) 525 W 23.00% -0.240 27.4 kg +20 W, +0.9 pp
REC475AA Pure-RX 475 W 22.80% -0.240 22.7 kg Lighter, +0.7 pp, -5 yr warranty
REC470AA PURE-RX 470 W 22.60% -0.240 22.7 kg -35 W, lighter, -5 yr warranty
REC Alpha Pure-RX 470 Wp 470 W 22.60% -0.240 23.4 kg -35 W, lighter, -5 yr warranty
REC465AA Pure-RX 465 W 22.30% -0.240 22.7 kg -40 W, lighter, -5 yr warranty

Found 5 panels of the same or similar size to this one, within ±10 mm. See them here Found 5 panels of the same or similar size to this one, within ±25 mm. See them here Found 5 panels of the same or similar size to this one, within ±50 mm. See them here Found 16 panels of the same or similar size to this one, within ±100 mm. See them here

About the JT SNk(B) series

6 answered

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

How does the HJT technology used in Jetion JT SNk(B) panels differ from classic PERC cells?
HJT (heterojunction) cells combine thin-film layers with N-type monocrystalline silicon, delivering higher efficiency and a lower temperature coefficient than classic PERC cells. This means JT SNk(B) panels lose less power on hot days and perform better under diffuse light - in the morning, evening, or on cloudy days. The result is higher real-world annual energy yield.
Do the bifacial Jetion JT SNk(B) panels actually produce more energy?
Yes, thanks to bifacial cells the panel captures additional light reflected from the ground onto the rear side of the module, increasing energy yield compared to monofacial panels. The extra gain depends on the albedo of the surface below the array - light-colored roofs, gravel, or snow perform better than dark ground. Best results are achieved with ground-mount or elevated racking configurations.
What warranty comes with Jetion JT SNk(B) panels and what does it cover?
The JT SNk(B) series comes with a 15-year product warranty and a 30-year power output warranty guaranteeing degradation below 10 percent over that period. These are among the longer terms on the market, translating into lower estimated LCOE and greater investment security for rooftop and ground-mount installations amortized over several decades.
Are Jetion JT SNk(B) panels suitable for ground-mount solar farms?
Yes, the mechanical design withstands snow loads up to 5400 Pa and wind loads up to 2400 Pa, meeting requirements for both rooftop installations and larger ground-mount farms. The bifacial technology also favors ground-mount racking with clearance from the ground, where the rear side of the module can effectively capture reflected light.
Do JT SNk(B) panels perform well under low irradiance and cold temperatures?
Yes, thanks to HJT technology and special anti-reflective glass, the panels maintain stable output even under low light conditions, typical of mornings, evenings, and cloudy days. A very low temperature coefficient limits power losses on hot days and also helps the module operate efficiently in colder climates.
Who manufactures Jetion JT SNk(B) panels and are they a Tier 1 supplier?
The JT SNk(B) series is manufactured by Jetion, a Chinese Tier 1 manufacturer, indicating solid financial standing, project bankability, and a proven production track record recognized by financing institutions. Maximum module power in this series reaches 525 Wp, making it competitive among other HJT bifacial panels on the market.
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