07-06-2009, 10:39 AM
* Growing demand for electricity
* Limited energy source
* Unavailability of land due to high population
Floating solar power stations
* Availability of solar energy
* Direct conversion into electrical energy
* Rich water logged areas
* Requires minimal land area
* Reduction in evaporation of water
* Expense can be minimized by using reservoirs of hydel stations
* 6-10 hours of electricity generation per day
Electricity generation by solar cells
Solar cells which are made of semi conductor material absorbs light which falls on it. This energy knocks the electron loose and it starts flowing freely. But the electric field in PV cells forces the free electrons to move in a certain direction which is current and this current is tapped by placing metal contacts on top and bottom of PV cell. The current together with cells voltage is called the power of a solar cell.
