Double glass photovoltaic power station

A double glass (Dual Glass) solar panel is a glass-glass module structure where a glass layer is used on the back of the modules instead of the traditional polymer backsheet. Double glass solar panels were originally heavy and expensive, but the lighter polymer backing panels gained most of the market share.

Double-glazed solar panels, also known as dual glass solar panels, offer increased reliability, especially for large-scale photovoltaic projects. They provide better resistance to higher temperatures, humidity, and UV conditions and have better mechanical stability, which reduces the risk of microcracks during installation and operation.

Regarding the moisture issue, the main argument against double glass modules is addressed by the use of polyolefins as encapsulating substances. The problem is further solved by the execution, as confirmed by e.g. PVEL tests.

In the case of Glass-Glass modules, an important change has been made by replacing EVA with polyolefins as an encapsulating substance. This is due to the free radicals generated during the EVA cross-link lamination process. Traditional backsheets are somewhat permeable to free radicals, but the double glass module is not.

Glass-glass photovoltaic panels degrade less over the years due to the strength of the glass. They are more resistant to blown sand and corrosion in general, and better withstand gusts of wind and mechanical snow loads.

The efficiency of HJT solar panels is higher due to their bifaciality, which is the highest on the market at 80-95%. This is compared to the average bifacial factor of PERC solar panels, which is 70%.