When bringing solar modules and other components to market, it is important for manufacturers to certify the capability of their products under a variety of conditions. Testing by the Underwriters Laboratory (UL) is required to ensure safe operation. While the UL test addresses safety, it does not attempt to ensure performance.
At present, Indian conditions require IEC 61215 for any Si-based modules being brought to market. The International Electrotechnical Commission (IEC) introduced a series of test procedures (IEC 61215 for crystalline silicon (Si) modules, IEC 61646 for thin-film modules, and IEC 62180 for concentrating PV modules) that is gaining recognition as the standard certification procedure. The IEC procedures, which include 18 tests of PV modules and other solar components, apply various stresses to the modules to identify design flaws that could lead to early failures.