Advantages of nuclear energy are:

(i) A small quantity of nuclear fuel is needed to produce a large amount of useful energy.

(ii) Nuclear power plant produces less atmospheric pollution than thermal power plants, if the nuclear fission reaction is performed properly.

(iii) Small amount of nuclear fuel can run a nuclear power plant over a long period of time. There is no need of inserting the nuclear fuel in the nuclear reactor again and again in a short period as in case of thermal power plant.