News Detail
Ultra-Clear Glass Achieves 91.5% Light Transmittance: A Key to Boosting Solar Panel Efficiency
In the pursuit of higher solar energy conversion rates, material innovation has become as important as cell design. One standout material is ultra-clear (low-iron) glass, which now boasts a light transmittance rate exceeding 91.5%—making it a game-changer in photovoltaic (PV) module performance.
1. What Is Ultra-Clear Glass?
Ultra-clear glass, also known as low-iron glass, contains significantly less iron oxide (Fe₂O₃) than conventional glass. The reduction in iron content eliminates the green tint found in regular glass, resulting in crystal-clear transparency. This clarity allows more sunlight to reach solar cells, directly boosting energy output.
2. Why 91.5% Transmittance Matters
Every percentage of light lost due to reflection or absorption reduces overall panel efficiency. With traditional glass offering about 88–89% transmittance, the extra 2–3% gained by ultra-clear glass translates into measurable performance improvements, especially in large-scale solar farms.
High transmittance ensures better light capture in low-angle morning and evening sunlight, enhancing total daily energy generation.
3. Additional Benefits
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Enhanced durability: Ultra-clear glass is often paired with tempering or anti-reflective coatings, improving mechanical strength and UV resistance.
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Consistency: Its uniform optical properties are ideal for precision lamination with EVA films and solar cells.
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Aesthetic advantage: The clear, color-neutral appearance also supports building-integrated photovoltaics (BIPV).
Conclusion
With light transmittance exceeding 91.5%, ultra-clear glass is more than just a cover—it’s a performance enhancer. As solar technology evolves, this high-transparency material plays a critical role in pushing photovoltaic efficiency to the next level.
