Solar power is generated with the help of a Photovoltaic cell (PV cell). Sun generates light and heat energy. It is the light energy and not the heat energy which is used by the photovoltaic cells. A PV cell consists of multi-layers of semi-conducting materials (Silicon). Electrical charges are generated when the semi-conducting material is exposed to light. The number of PV cells used depends on the amount of the electricity to be generated. Hence, the PV cells acts as a portable power charger.

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