None of the tested constellations reduced the performance of the solar modules by more than 1.81 per cent. The LeTID benchmark involves testing PERC solar cells used in the solar modules for their light and temperature induced degradation. LeTID can occur within the first months up to the first years after installation. In some cases, this causes a reduction in module output of up to ten per cent.
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Solar carport and wall boxes for BMWi and plug-in hybrid BMW models
For some time now, there has been a lively discussion in the solar industry about the extent to which the widespread and widely used PERC cells lose power as a result of the LeTID phenomenon. Due to the typical structure of PERC cells, there is a possibility that they may degrade more rapidly in some compositions and under certain circumstances. Therefore, the industry has extended the standard for testing solar panels with an additional test for LeTID, the IEC CD 61215-1: Ed.2.0. Solarwatt is one of the first manufacturers to have its modules undergo this test. (mfo)
