When did bifacial double-glass modules appear

Why do bifacial modules need 2 mm glass?

As a result of the additional cost of very thin glass, most mass production bifacial modules being produced today are described as using 2 × 2.5 mm glass. More often, this means 3.2 mm on the front and 2 mm backsheet glass, states Weilharter – which brings down costs but in turn introduces its own issues.

Should bifacial panels have double/dual glass?

These days, many bifacial panel designs incorporate double/dual glass at the rear of the modules. Glass-glass panels seems to better transmit light and are more resistant to unpredictable weather, moisture, corrosion, and have good mechanical load capacity.

What is bifacial glass technology?

Bifacial glass technology is the preferred material among manufacturers for the rear side cover of the modules. Some key advantages of the glass-glass structure are: Glass-glass modules can also be frameless, which helps eliminate the cost of an extruded aluminum frame. However, glass-glass models with frames have a lower risk of breakage.

Why are glass-glass bifacial modules becoming more popular?

Due to their better reliability, glass-glass bifacial configurations have a larger portion of the worldwide bifacial module market share. Glass shortages, weight concerns for larger format modules, and decreasing prices for transparent backsheets have caused some manufacturers to switch to a glass-transparent backsheet structure.

Do bifacial modules come with frames?

As a result, most glass-glass modules come with frames in place. Compared with standard glass backsheet technology, framed modules with two layers of glass are heavier. Therefore, transparent backsheets are a solution for a lighter bifacial module. A more lightweight module means less cost on transportation, labor, and trackers whenever applicable.

What is a dual glass module?

Our dual glass modules use the same internal circuit connection as a traditional glass-backsheet module but feature heat-strengthened glass on both sides. We produce the back glass with a unique drilling technique that ensures the reliability of both the junction box installation and the module.