Double glass photovoltaic (PV) module, also known as double glass solar panel, is a type of solar panel with a unique design that differs from traditional solar modules. The primary feature of double glass PV modules is the use of two layers of tempered glass instead of the standard single-layer backsheet on the rear side of the panel.
- Durability and Weather Resistance
The double glass construction makes these panels more resistant to environmental factors like moisture, humidity, and temperature fluctuations. They have improved weather resistance, making them suitable for harsh climates and coastal areas.
- Enhanced Mechanical Strength
The dual glass layers provide additional mechanical strength, protecting the solar cells from external impacts and potential damage.
- Higher Transmittance
Compared to traditional backsheet materials, glass has higher light transmittance, allowing more sunlight to reach the solar cells and improve overall energy generation.
- Improved Aesthetics
Double glass modules often have a sleek and modern appearance, making them an attractive option for residential and commercial installations.
- Reduced PID (Potential-Induced Degradation) Risk
PID is a phenomenon that can decrease the performance of solar panels over time. Double glass modules have reduced PID risk due to their robust construction and low-impedance design.
- Fire Resistance
Glass is non-flammable and has higher fire resistance compared to some backsheet materials used in traditional solar panels.
- Longer Lifespan
The use of glass as the rear layer enhances the panel’s durability, potentially extending its lifespan compared to conventional solar panels.
- Improved Temperature Coefficients
Double glass modules often exhibit better temperature coefficients, meaning they can maintain higher efficiency levels at elevated temperatures.
- Lower Annual Degradation
Due to better protection from environmental factors, double glass modules may experience lower annual degradation rates, resulting in more stable and predictable energy output over the years.
- Better Warranty Coverage
Some manufacturers offer extended warranties for double glass PV modules, reflecting their confidence in the panels’ durability and long-term performance.
It’s important to note that while double glass solar panels offer certain advantages, they may also come at a higher cost compared to traditional modules. As with any solar panel installation, it’s essential to consider your specific needs, budget, and the local climate conditions when choosing the most suitable type of solar panel for your application.
