The PV industry is increasingly focused on module reliability. However, misuse of the terms reliability and durability, immature long term reliability prediction tools, and general lack of empirical data make it difficult for the industry to characterize the risks. While PV module qualification tests have progressed tremendously, they can't by themselves fully predict lifetime reliability. Given these issues, investors, developers and manufacturers need to consider module reliability in their risk management portfolios.

Failure rates, even small ones, can drive lost revenue for investors, developers and plant operators. Here are some factors to consider about PV reliability.