Energy obtained by burning fossil fuels:-
(i) The energy obtained is of high intensity and is obtained only in a limited surface area for a limited time
(ii) Energy obtained by burning fossil fuels is exhaustible.
(iii) Fossil fuels are non-renewable.
(iv) During burning of fossil fuels lot of smoke is produced and various gases are
produced due to which air pollution is caused.
Solar energy:-
(i) Solar energy is diffused in nature. But it is received everywhere on earth at all times.
(ii) Solar energy is non-exhaustible.
(iii) Solar energy is renewable.
(iv) Solar energy causes no pollution of any sort.