The double-glass construction significantly improves the lifespan of bifacial solar panels through several mechanisms:
- Enhanced Durability and Protection: The double glass layers on both sides of bifacial panels provide superior protection against environmental stressors such as dust, water, wind, humidity, ammonia, salt spray, and fire. This robust glass-to-glass design guards the solar cells more effectively than traditional glass-backsheet panels, reducing physical damage and degradation over time.
- Longer Lifespan: Due to the increased resistance offered by the double glass, these panels typically last around 30 years or more, compared to about 20-25 years for standard glass-backsheet monofacial panels. Manufacturers often offer warranties up to 30 years to reflect this durability.
- Lower Operating Temperatures: Bifacial panels with double glass construction tend to operate at cooler temperatures because they absorb light from both sides, which helps dissipate heat. Lower temperatures reduce thermal stress and degradation of panel materials, further extending their lifespan and maintaining efficiency.
- Stable Structural Integrity: Even with thinner front glass, the total thickness of approximately 4 mm of glass in double-glass modules maintains stability and structural integrity over time, preventing bending or warping that can damage the cells.
- Reduced Maintenance Requirements: The tough double-glass surface is easier to clean and less vulnerable to environmental factors, which helps maintain optimal light absorption and reduces the likelihood of performance loss due to dirt or physical wear.
In summary, the double-glass construction enhances the mechanical strength and environmental resistance of bifacial solar panels, leading to a longer operational life, higher reliability, and better performance consistency over decades.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-does-the-double-glass-construction-improve-the-lifespan-of-bifacial-solar-panels/
