Conventional and non-conventional sources of energy.
Conventional Sources of Energy | Non-Conventional Sources of Energy |
1. Conventional sources of energy are those sources of energy which have been in use for long time. 2. Coal, petroleum, natural gas and electricity (both thermal and hydel) are examples of conventional sources. 3. They are exhaustible sources of energy and cannot be replenished easily. | 1. Non-conventional sources of energy are those sources which are relatively new. 2. Solar, wind, tidal, geothermal, atomic energy and bio-gas are examples of non-conventional sources of energy. 3. They are not exhaustible sources of energy. They are renewable. |