Question

What are the limitations of extracting energy from

(a) wind

(b) waves

(c) tides

Answer 1

(a) The wind:
1. Wind energy farms can be established only at those places where wind blows for the greater part of a year.
2. The wind speed should also be higher than 15 km/h to maintain the required speed of the turbine.
3. Establishment of wind energy farms require large are of land.
These are the limitations of extracting energy from the wind.
(b) Limitations of extracting waves energy: The waves are generated by strong winds blowing across the sea. Wave energy would be a viable proposition only where waves are very strong.
(c) Limitations of extracting tidal energy: The locations where such dams can be built are limited.