Name four energy sectors where nanotechnology is useful.

The four energy sectors where nanotechnology is useful are given below:

(a) Biofuel as renewable energy :- They are the renewable sources of energy which will be useful in near future as fossil fuels are getting exhausted

(b) Fusion power:- Nano technology can play a vital role in generating energy from Nuclear Fission

(c) Concentrated solar power:- Solar power will be important in Future as it is untapped source of energy

(d) Nanowire battery:- Nanotechnology can be used in future to make batteries which have better performance than those in present