what r d merits and demerits of solar , wind nd tidal energy
(i) Wind Energy refers to the the energy harnessed from wind. The merits and demerits of the wind energy are listed below.
- Wind is freely available in nature.
- Wind energy does not cause any pollution and is eco-friendly.
- Air is a renewable and inexhaustible source of energy.
- Wind farms can be established only at places where there is a continuous wind speed of over 10 mph.
- The initial cost of setting up a farm is quite high.
- A wind farm requires high quality maintenance facilities.
(ii) Solar energy refers to the energy harnessed form the sun. The merits and demerits of the wind energy are listed below.
- Solar radiations are abundantly available.
- Solar cell panels have no moving parts and hence require little maintenance.
- It is a pollution free and clean source of energy
- Availability of special grade of silicon used to produce solar cells is limited.
- Installation of solar panels involves huge cost
- Solar energy suffers from low efficiency. Huge solar panels are reqired to produce small amount of energy.
(iii)Tidal energy refers to the energy derived from the tides of the sea.The merits and demerits of the wind energy are listed below.
- As 71% of the earth surface is covered with water, tidal energy can be produced on a large scale.
- Tidal energy is more efficient than other sources of energy
- The density of tidal energy is greater than other sources of energy.
- The construction of tidal power plants require huge cost.
- The generation of tidal energy adversely affects the aquatic life.
- The gneration of tidal energy is not cost effective.