Currently the most efficient cells are based on crystalline silicon with their production cost being relatively low. At the same time this technology can offer high reliability with the cell service life at least 25 years. In a lab environment cells show 44% efficiency of light conversion but the efficiency of serial solar cells is from 12% to 19%.
Any solar panel consists of solar cells and their type defines total capacity and service life of the overall system. Depending on their quality, light cells can be split into 4 categories or so-called grades.
How to identify the module made of Grade C and D elements? There are three main attributes:
Example of cut solar cells:
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