What are the conventional sources of energy?

Conventional sources of energy, also known as non-renewable sources of energy as we cannot reuse after using them once and these are being used extensively for a long time due to which their known reserves have been depleted to a great extent. Now, they are available in limited quantity.

Coal, petroleum and natural gas are the most widely used conventional sources of energy.  All these three accounts for about 90% of the world’s production of commercial energy.


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