Question

What are limitations of energy that can be harnessed from the sea?

Answer 1

Tidal energy, wave energy, and ocean thermal energy are various forms of energy that can be obtained from the sun. But there are several limitations to harness these energies. Those limitations are

(i)High dams are required to be built to convert tidal energy into electricity which incurs lot of cost.

(ii)       Very strong waves are required, which are not possible all the time.

(iii)     Tidal energy depends on the relative positioning of the Earth, moon, and the Sun. 

(iv) To harness ocean thermal energy the difference in the temperature of surface hot water and the cold water at depth must be 20ºC or more.

Answer 2

The Fundamental Limitations of Renewable Energy. Many people still think that it will not be long before renewable energy such as solar and wind becomes outright cheaper than fossil fuels, thereby leading to a rapid expansion of the thin orange slither in the graph below.