Answer :
Nonconventional sources of energy refers to those resources which have been put to use recently for commercial purposes. They are sustainable energy sources and inexhaustible resources of energy. They are more equitable distributed and abundant in nature. The different sources of nonconventional energy are explained below:
a. Solar energy: Solar energy is the energy that is derived from the heat of the Sun. It is used in cooking, water heating, and space heating. It is also used to pump pressure cooker, road lights, and telephones.
b. Wind energy: Wind energy is the energy that is trapped from the wind. This is done using windmills, wind generators and battery charging systems. They have been extensively developed in the areas of Tamilnadu, Gujarat, Maharashtra, and Orissa.
c. Biogas: Biogas is a byproduct of the biogas plant. It is an important source of renewable energy in rural areas. For cooking, and power generation.
d. Geothermal energy: It is the energy that is generated from the heat of the earth that is converted to electrical energy.
e. Tidal energy: Tidal energy is the energy that is generated from the oceanic tides during high tide water flows. Gulf of Kutch is a prominent area for the same.
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NCERT - India-People And Economy