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प्रश्न
What are the various non-commercial sources of energy?
उत्तर
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. This form of energy is used for domestic and for consumption purposes, for example, Firewood, agricultural waste, animal waste (cow dung), etc. These goods neither command a price nor have established market.
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