HYDRO POWER
WORKING OF HYDRO ELECTRIC
POWER PLANT
• A conventional dam holds water in a manmade lake, or reservoir, behind it.
• When water is released through the dam, it
spins a turbine connected to a generator that
produces electricity.
• The water returns to the river on the
downstream side of the dam.
ADVANTAGES
1)Flowing water is a renewable source of energy.
2) The electricity produced does not cause
pollution.
3) The water stored in dams can also be used to
control floods and for irrigation.
4) Once a dam is constructed, electricity can be
produced at a constant-rate.
5)Often large dams become tourist attractions in
their own right.
Disadvantages :1)The initial cost is high.
2)Large areas of land gets submerged and the
decomposition of vegetation produces
methane gas which is a green house gas.
3)It causes displacement of people from large
areas of land.