Thursday, April 30, 2009

Advantages and disadvantages of alternative energy sources

Alternative sources are also called non – conventional sources of energy. These are not based on burning of fuels or splitting of atoms. Alternative sources of energy can be used constructively to meet the energy requirements.

Alternative sources of energy have several advantages. Most alternative energy sources are renewable. They do not emit greenhouse gases. These sources of energy are non toxic. This means that they do not emit harmful chemicals into the atmosphere. They are inexhaustible.

Alternative energy sources are available everywhere and can be put to use at any location. They are sustainable sources of energy. These sources of energy do not cause pollution and are freely available. Most alternative sources of energy are a cost effective means for generating electricity. These sources reduce the dependence on oil or coal for meeting the energy needs.

Disadvantages of alternative sources of energy is that production of alternative sources of energy is expensive. These sources cannot be harnessed easily. It is difficult to make a lot of energy in a short period of time.

Wind turbines used to harness wind energy cause noise pollution and may even kill or injure birds. For harnessing tidal energy, hydroelectric plants require a lot of land and thereby reduce the amount of land available for other purposes. The cost of producing electricity by using these sources is a lot.

With a number of advantages, alternative sources of energy can be optimally utilised to meet the growing needs of energy across the world.

5 comments:

  1. THANK YOU!! so much this helped me in my science project! xx

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  2. Alternative energy is any energy source that is an alternative to fossil fuel. .... that is collected and refined can be used as an energy source for various products. λεβητες πέλλετ

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  3. Thank you maybe u should do one about cooking with science

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