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Just Solar Co., Limited
From €0.640 / Wp
Cell Type: PERC
Power Range: 5.2~5.45 Wp
Region: China China
Note: Your Enquiry will be sent directly to Just Solar Co., Limited.


High Cell-to-Module ratio through precise cell conversion efficiency sorting.
Excellent electrical long-term stability and reliability by using of best raw materials and through strict quality inspection control.
Low breakage rate by using highly qualified and stable wafers.
High-quality homogeneous appearance by sorting into defined color classes.

Product Characteristics

Model No.
21.3 21.4 21.5 21.6 21.7 21.8 21.9 22.0 22.1 22.2 22.3
Product Characteristics  
Cell Technology PERC
Dimensions 156.75×156.75 mm
Diagonal 210±0.25 mm
Cell Thickness 200/200/200/200 ± 20 µm
Front Surface (-)  
No. of Busbars 5
Busbar Material Silver
Anti Reflection Coating Silicon nitride, Titanium dioxide
Back Surface (+)  
No. of Soldering Pads 5
Soldering Pad Material Silver, Aluminium
Back Surface Field (BSF) Aluminium
Electrical Data at STC  
Maximum Power (Pmax)
5.2 W 5.23 W 5.25 W 5.28 W 5.3 W 5.33 W 5.35 W 5.38 W 5.4 W 5.42 W 5.45 W
Voltage at Maximum Power Point (Vmpp)
0.569 V 0.57 V 0.572 V 0.574 V 0.576 V 0.577 V 0.579 V 0.581 V 0.582 V 0.584 V 0.586 V
Current at Maximum Power Point (Impp)
9.15 A 9.17 A 9.18 A 9.2 A 9.21 A 9.23 A 9.24 A 9.26 A 9.27 A 9.28 A 9.3 A
Open Circuit Voltage (Voc)
0.677 V 0.678 V 0.679 V 0.68 V 0.681 V 0.682 V 0.683 V 0.684 V 0.685 V 0.686 V 0.687 V
Short Circuit Current (Isc)
9.706 A 9.725 A 9.743 A 9.762 A 9.78 A 9.799 A 9.817 A 9.835 A 9.853 A 9.871 A 9.889 A
Cell Efficiency
21.3-21.4 % 21.4-21.5 % 21.5-21.6 % 21.6-21.7 % 21.7-21.8 % 21.8-21.9 % 21.9-22.0 % 22.0-22.1 % 22.1-22.2 % 22.2-22.3 % 22.3-22.4 %
Fill Factor (FF)
79.23 % 79.27 % 79.37 % 79.55 % 79.65 % 79.69 % 79.79 % 79.98 % 79.94 % 80.03 % 80.22 %
Thermal Ratings  
Temperature Coefficient of Pmax -0.35 %/˚C
Temperature Coefficient of Voc -0.28 %/˚C
Temperature Coefficient of Isc 0.03 %/˚C
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Just Solar Co., Limited

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1288 Kanghe Road, Jiaxing City, Zhejiang Province, P.R. China
No. Staff: 5,000
Parent Company: SHI Group Limited
Note: Your Enquiry will be sent directly to Just Solar Co., Limited.

Useful Contacts

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Frank Yang CEO
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Rachel Liu Sales manager
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Monica Li Sales Manager
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Mark Zhou Marketing Director
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Sec Sales Manager
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Frank Sales Manager
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Chen Shengjiao Sales Manager
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JUST SOLAR International Sales
Company Description
JUST SOLAR CO. LIMITED is a multinational company that manufactures, designs, R&D, realizes quality control and sales PV cells, modules and system for worldwide customers and commercial projects.

Here at JUSTSOLAR, we are a one-stop solution provider for our customers’ sustainable power needs. We harness the power of the sun and are committed to providing our customers the best solar products and solutions for long term and sustainable commercial, industrial, rural and domestic energy needs.

Total reliability, high quality and standards, timely delivery and expert project management ensure our reputation staying with us through the years.

JUSTSOLAR firmly believes that long-term customer satisfaction is the determining factor of our success. To continue meeting the changing needs of our valued customers, JUST-SOLAR is committed to creating value that increases and enhances customer’s competitiveness in its industry as well as providing a high standard for superior quality products and value-added service.
Business Details
Material Types
Sell Out Cells / Use For Own Panels
Sell Out Cells, Use For Own Panels
Parent Company
SHI Group Limited
Cell Technology:
Monocrystalline, Polycrystalline, PERC

High-quality and innovative photovoltaic solar modules

We are the experts when it comes to solar modules. With our yearly production of 1 GW, we can fulfill all your wishes. All you need to do is tell us whether poly- or monocrystalline and we deliver. We only remain stubborn when it comes to quality. Whatever leaves our production halls has been proved and always complies with the highest international required standards. These are only changed if it’s for the good of quality. Then and only then can we guarantee you long durability. 



Shading Resistant Smart Modules with Hot-Spot free technology 

 Power Range: 5W-650W
 Available in mono and polycrystalline

    -    Supreme design and quality;

    -    Individual bypass diode for each cell. With Hot-Spot Free technology  protects each cell by an individual bypass diode;W

    -    When the current of a single cell does not match the current of the whole string, that cell has a reverse voltage, so when measured more than 0.6V, it will automatically activate the bypass diode. As a result, the rest of the cells will not be affected by the disruption;

   -      Increased performance ratio up to 30% ;

   -     We provide all International standards' certificates, 30 years performance guarantee and 12 years product warranty;

With a large selection of module dimensions and performance classes you will find exactly the right one for your project






3 More Series From Just Solar Co., Limited

  • €0.341 / Wp
    JUST Poly 5BB
    4.39~4.96 Wp Polycrystalline
  • €0.107 / Wp
    JUST Mono 5BB...
    5.18~5.5 Wp Monocrystalline
  • €0.102 / Wp
    JST Mono 9BB ...
    5.98~6.28 Wp Monocrystalline