What are the various non-commercial sources of energy?

indian-economy
cbse

#1

The. sources of energy that are generally available free to the users and that do not have a recognized market are referred to as non-commercial energy.
(ii) This form of energy is used for domestic and for consumption purposes.
(iii) For example : firewood, agricultural waste, animal waste (cow dung), etc. These goods
neither command a price nor have established market.