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Solar energy: a good option

EARTH receives about 75,000 × 1011 KW of energy from the sun every day. Just 0.1 per cent of this energy is sufficient to meet the energy requirement of the entire world.

If the solar energy striking an area of 12,550 square km at noon is converted to electricity, it will be equal to the peak power generation capacity of all power plants in the world. Similarly, if only a part of the roof of an average house in Pakistan is converted with solar panels, it can provide sufficient energy to meet the entire energy requirement of the house.

Solar energy could be converted to mechanical, chemical or electrical energy also. However, silicon solar cells can covert solar radiation directly into electricity and can be used for domestic lighting, for running TV sets, radio instruments and for community lighting.

These systems are costly to install. However, once installed, there is little expenditure involved and the device works for years and years together. With the advent of summer, our country faces more and more energy shortfall. We must avail ourselves of this environment-friendly energy in order to keep sustainable pace with developing nations around the world.



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