The equipment required for a solar power system varies slightly depending on whether it’s off-grid or grid-tied. However, both types start with solar panels. Solar panels contain multiple photovoltaic (PV) cells, also known as solar cells, that use the sun’s energy to excite electrons and create streams of electricity. With strength-in-numbers, each PV cell chips in to create useable levels of electrical current. In off-grid systems, the electrical current generated by the solar array, or the collection of solar
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