The US cadmium telluride thin-film module maker said its Series 6 CuRe panels are able to retain 92% of its performance at the end of the 30-year warranty. The improved stability of the product was achieved by eliminating copper and placing Group V elements such as antimony or arsenic onto the tellurium crystal sites.
U.S.-Spanish researchers have proposed a new way to assess the reliability of PV modules and their warranties. It is impossible to fulfill a 25-year warranty if the threshold of returned modules exceeds 5% and the annual degradation rate is over 0.73%.
The warranty risk of solar must be addressed early in the development phase of PV projects, as it is not possible to buy warranty insurance later during the operational phase. Decisions taken by developers at this stage will remain important for the next 25 years. The good news is that an industry standard exists, and it can be easily and cost-effectively applied to most PV projects, writes Ronald Sastrawan from Munich Re.