The photovoltaic process makes it possible to transform sunlight into electric current. The transformation runs through the photovoltaic effect. The name of the effect comes from “Photo“ for ray of light and “volt“ for voltage. The device by which this effect is utilized, is called solar cell (or photovoltaic cell).
Electricity from photovoltaic systems is still considerably more expensive than conventional current. This is not surprising, because it’s a matter of a young technology, but which becomes cheaper day by day and by every unit installed.
It’s argued repeatedly that the production of solar energy-systems consumes more electricity than the system will ever produce itself. This statement is definitely wrong – the balance of energy has become positive long ago!
Solar cells mainly are composed of endowed sillicon. Sillicon is a nontoxic semi-conductor metal which is predominantly used in chip-industry. Also during operation, solar cells don’t produce any toxic material, only eco-friendly solar current.
