What are the advantages of DualSun FLASH and SPRING Shingle panels?

The DualSun FLASH Shingle Black  and  SPRING Shingle Black solar panels are equipped with so-called "Shingle" cells.

This next-generation cell technology brings a multitude of benefits to SPRING and FLASH panels.

  • Better overall module performance by reducing hot spots and optimizing the active surface
  • More sustainable by reducing internal mechanical stress on the module
  • Sustainability certified by the TÜV control office and low impact of extreme conditions
  • Shingle cell technology allows better pressure absorption on the panel compared to traditional monocrystalline photovoltaic cells.

Shingle cells are less affected by micro-cracks, so the decrease in yield over time is lower


Available cell technologies on the market

Currently on the market there are several types of monocrystalline photovoltaic cell technologies:

Shingle Half-cut Full size cell
Panneau_solaire_Shingle.png Panneau_solaire_Half-Cut.png


The much more powerful Shingle cells you can find on our SPRING Shingle Black  and  FLASH Shingle Black panels.

The "half  cut" cells you can find on our FLASH Half-Cut Grey panels.

The "full  cell" monocrystalline cells that you can find on our FLASH Black  and  SPRING Black panels.




The much more powerful Shingle cells you can find on our SPRING Shingle Black  and  FLASH Shingle Black panels.





The "half  cut" cells you can find on our FLASH Half-Cut Grey panels.


Full size cell



The "full  cell" monocrystalline cells that you can find on our FLASH Black  and  SPRING Black panels.


Better overall module performance thanks to low string intensity

The cells of the FLASH and SPRING Shingle panels have an intensity 5 times lower than conventional cells. This feature gives these panels a better performance than a conventional panel.






P= R x I²: The Joule effect losses are therefore significantly lower thanks to Shingle technology 

This leads to an average operating temperature of about -5°C on the Shingle modules. Performance is improved.


More durable solar panels thanks to the reduction of mechanical stress in the module

The FLASH and SPRING panels with Shingle technology incorporate an innovative cell interconnection process.

The low temperature and flexibility of the interconnection process remove the internal mechanical stress usually present in modules with high-temperature interconnections.

Standard photovoltaic technology

On standard panels, interconnections are done at high temperatures (250-300°C).

There are three possibilities:

  1. Either a great distance between the cells to relieve internal stress, however this reduces the surface performance. 
  2. Or a reduced distance between the cells, but this induces a concentration of stress, which can lead to cracks of the cells.
  3. The third possibility is to have a negative distance between cells, which makes the risk of cell crack even greater.


Shingle Technology

The Electric Conductor Adhesive (ECA)  polymerizes at the same temperature as the module encapsulates: only 150°C.

The cells are interconnected with a flexible adhesive that incorporates an elastic energy absorption effect.


The manufacture of photovoltaic cells

The process of making half-cut photovoltaic cells:


  1. Laser cutting
  2. String layout
  3. Nesting
  4. Lamination
  5. Assembly
  6. Test


The process of making Shingle photovoltaic cells:


  1. Laser cutting
  2. Setting up the Electric Conductor Adhesive (ECA)
  3. Positioning cells as tiles
  4. String layout
  5. Assembly of the strings between them
  6. Lamination
  7. Test

Read more about the positioning of the by-pass diodes in the DualSun Shingle panel.

The durability of the TÜV-certified Shingle module

Le très faible impact des essais en conditions extrêmes de l’environnement est certifié par le TÜV.


0.07%   Ammonia corrosion test - 1

0.20%   Salt mist corrosion test 6-2

0.22%   Ammonia corrosion test - 2

0.30%  Salt mist corrosion test 6-1

0.32%  Dynamic Mechanical Charge

0.45%  Hail Test

0.45%  Dust and sand


Shingle cells are evenly affected by micro-cracks

For a variety of reasons, solar cells can undergo micro-cracks.


For a standard full cell or half-cut cell module that has a micro-crack, a portion of the cell becomes isolated, the current through this area no longer circulates, which affects the efficiency and performance of the panel.


In the case of a FLASH or SPRING panel with Shingle cells, the continuity of the  inter-connection  does not affect the flow of electrons and thus the performance of the module, even in case of micro-cracks.


Shingle technology does not take the pressure, it absorbs it

The behaviour of cells under pressure


Shingle Technology

Under pressure,
the flexible ECA of Shingle technology helps relieve the bending mechanical stress, keeping the interconnections intact.



Standard photovoltaic technology

Standard photovoltaic technologies concentrate bending stress on interconnection points under pressure, so module performance decreases.


Low-temperature static mechanical load

Shingle technology is more resistant to low-temperature mechanical loads than conventional full cell  or  half-cut modules.

3600pa.png 5400pa.png


The Shingle module passes the equivalent of 3 times what IEC standards require

Even after performing 3 times the tests required by IEC standards, Shingle technology shows less than 5% loss of performance.

4.77%   DH3000 

4.60%   HF30

2.84%   TC1000

1.26%   UV45

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