Learning from the word itself, the prefix “photo” means “produced by light,” and the suffix “voltaic” refers to “electricity produced by a chemical reaction.” PV technology produces electricity directly from the electrons freed by the interaction of sunlight with certain semiconductor materials, such as silicon, in the PV module. The electrons are collected to form a direct current (DC) of electricity. Photovoltaic or Solar Electric or PV System converts light (not heat) energy of the sun into electrical energy (Direct Current DC) electricity. This DC current is converted to AC current with an Inverter. The AC electricity can be used to power electric loads or deposit with utility grid to be pulled back later for consumption. The electrical energy produced by PV system can also be used for charging (storage) batteries.