Results of the first round of the Photovoltaic Durability Initiative

The Photovoltaic Durability Initiative rates PV modules on their relative likelihood to perform over their service lifetime. The test protocol provides quantitative, comparative reliability data for modules in representative operating environments. The PV Durability Initiative was developed to understand and improve PV module durability and evolve into a lifetime assessment protocol with industry-wide acceptance. Accelerated lifetime tests are correlated with long-term outdoor exposure. This paper reviews results from the first five module designs tested under the program.