The diagram below shows how electricity is generated in a hydroelectric power station. Summarize the information by selecting and reporting the main features, and make comparisons where relevant.

The given diagram illustrates a hydroelectric

power

station

and how electricity is generated in it. A hydroelectric

power

station

uses

water

energy to generate electricity from a high level to a low level. It works in different modes

day

and

night

. During the

day

, the

water

flow passes under the dam in the high-level reservoir, which is only open during the

day

.

Water

flowing into the

power

station

operates a generator with a reversible turbine.

Then

it crosses the

power

lines and goes to the national grid.

On the other hand

, a

night

station

starts from where it ends, unlike a

day

station

.

First,

the low-level

water

holder pumps

water

to the high-level

water

tank. During pumping, the

water

flow is closed at

night

after reaching the high-level

water

basin in the upstream direction.

To conclude

, hydroelectric

power

stations work by performing different functions

according to

different parts of the

day

. In the daytime, it uses natural

water

energy. Meanwhile, at

night

, it transfers the

water

to create and store the energy for the next

day