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Close up of solar panel

About Photovoltaics

Photovoltaic cell module array

Photovoltaic is a solar power technology that uses arrays of photovoltaic cells to convert light from the sun directly into electricity. Solar cells produce direct current (DC) electricity from light, which can be used to power DC equipment or to recharge a battery. Adding batteries to your photovoltaic system will also provide a secure back-up source of electricity for your home. An inverter is required to convert the DC electricity to alternating current (AC) electricity to power almost all uses of electricity in the home.


PV satellite

The first practical application of photovoltaics was to power orbiting satellites and other spacecraft and pocket calculators, but today the majority of photovoltaic modules are used for grid connected power generation.

 


Photovoltaic relationship chart

The basic photovoltaic cell typically produces only a small amount of power. To produce more power, cells can be interconnected to form modules, which can in turn be connected into arrays to produce yet more power. Because of this modularity, photovoltaic systems can be designed to meet any electrical requirement, no matter how large or how small. A typical 3.15 kW photovoltaic system in Georgia can offset up to one-third of the member's average annual electricity usage.***