Ans : a) Merits:
i) The layout, construction, and operation of the plant are simple.
ii) Maintenance cost is low.
iii) It can be started and put into service instantly.
iv) It can take varying load easily.
v) It has no standby losses.
vi) No fuel charges are required.
vii) Less number of operational staff is required.
viii) The efficiency is quite high about 75% to 85%.
b) Demerits :
i) Large area is required.
ii) It takes a long time for erection.
iii) The construction cost is very high.
iv) Long dry season may affect the operation.