The solar photovoltaic modules used by SolarCity in its residential and commercial installations have useful lives of 35 years or longer, going by new data and information recently presented by the company. The new findings are the result of independent, third-party, accelerated stress testing of SolarCity’s solar photovoltaic (PV) modules performed by the world-renowned laboratory DNV GL. The accelerated stress testing that was performed by DNV GL went beyond the IEC 61215 industry standard, reportedly.…