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Photovoltaic is the direct conversion of sunlight into electricity using devices made of thin
semiconductors layers; these devices are called solar cells and a PV module consists of a number of
cells connected together. The peak output power of a module, defined as the power delivered at an
irradiation of 1000 W/m2 at 25° C, ranges from 30 to 120 W. The PV modules can form PV systems
when they are connected together.
PV modules concentrates the incident light onto photovoltaic cells. The cells can be divided in crystalline
or thin film.
Unfortunately, the investment cost restricts the application in large stations and individual or grid
connected systems have generally a nominal power between 50 Wp and 10 kWp. Thanks to a national
policy, French overseas department developed a lot of installation.
[http://www.pvportal.com]
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