The lifespan of solar panels is determined by the materials used, such as solar cells, tempered laminated glass, EVA, and TPT. Generally, solar panels made by manufacturers using high-quality raw materials can last for over 25 years. However, due to the harmful effects of the natural environment, the raw materials of solar panels will deteriorate over time. Under normal conditions, the power output will decrease by 30% after 20 years and by 70% after 25 years.

  

Monocrystalline materials always have higher conversion efficiency than polycrystalline ones, and this remains the case even in the laboratory. Another advantage of monocrystalline materials over polycrystalline ones is that they are less prone to damage during processing. In terms of appearance, monocrystalline materials are usually of pure colors (typically dark blue and grayish black).

  

The conversion efficiency of monocrystalline solar panels is around 15%, with some exceeding 24%. It has a relatively high conversion efficiency among all types of solar cells, but the manufacturing cost is quite high, which has prevented its widespread application. Because monocrystalline silicon is usually encapsulated with tempered laminated glass and moisture-resistant epoxy resin, it is durable and has a lifespan of typically 15 years, with some reaching up to 25 years.