Difine ulternative source of energy.

 

Alternative sources of energy are the energy sources which can be used as an alternative to the non renewable fossil fuels. Minerals like coal and petroleum are non renewable resources which cannot be replenished by nature. It is feared that the rapid use of these resources will lead to their exhaustion. Hence, we have to look for an alternative source of energy which are renewable and can not be exhausted. Solar energy, tidal energy, wind energy, geothermal energy are some examples of the alternative sources of energy.