Photovoltaics (PV) are devices that generate
electricity when exposed to light. They covert radiation energy,
particularly solar energy, into electric energy. Since 1958 photovoltaics
is used to supply energy to space vehicles with solar cells. Nowadays
it is also used on the earth to the stream production and finds
application on roof surfaces, with light machines, in pocket calculators,
on sound insulation walls or on free surfaces.
consists of several components. To built up solar modules, several
solar cells are typically connected in a row.
of photovoltaic elements can be arranged into powerplants.
A special case of
photovoltaic system is building integrated