Because the glass is non-reactive, there is no chemical reaction between it and the solar panels or the epoxy that bonds the panels together. While the plastic backplane is not very reactive, the glass is quite different.

    Because glass is non-reactive, and two layers of glass do a good job of preventing water from entering the panels, double-glazed panels can reduce or potentially eliminate damage caused by potential induced degradation or PID. This is caused by stray currents flowing where they shouldn't be. To make matters worse, humid climates and high temperatures lead to marks that look like snail marks, reducing panel performance and ultimately causing them to fail.

    Almost all solar panels have a reflective layer on the bottom of the solar cells, so light hitting the bottom of the cells is reflected back again, giving it a second chance to be absorbed and generate electricity. In a double-sided panel, since the bottom of the solar panel is glass, this reflective layer can be omitted to allow light generated from the back and front of the panel. Even among double-glass panels, bifacial ones are still in the minority, but they are gaining acceptance and may be used on a large scale for solar farms in the future.

    Bifacial solar panels generate more power only when light can reach the back of the panels, which doesn't happen when laid flat on a roof. The gap between the panels and the roof is what we scientists call a very small gap, and not much light can get in there. No matter how pearly white your roof is, a panel with a reflective layer on the bottom of the solar cells will generate more electricity than a double-sided panel.

     Jiaxing Fuying Composite Materials Co., Ltd. is a mono solar panels manufacturer and supplier in ChinaThe company produces PV solar panels and other photovoltaic products and PVB films.