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

The diagram illustrates the

process

of

electricity

production in a hydroelectric

power

station

. The

process

begins when the

water

flows

from the

river

to the high-level

reservoir

, and it ends with the transmission of

electricity

to the national grid.

Overall

, what stands out from the diagram is that the

process

is broadly distributed into

day

and

night

stages, with a daylight stage involving

electricity

production from the

river

and storage of

water

in the

reservoir

. At

night

, the

water

flows

back in the opposite direction towards an initial

reservoir

and the

river

. The

day

stage of the

process

involves

channeling

Change the spelling

channelling

show examples

the

river

water

into a high-level

reservoir

backed up by a dam. There is an intake area leading to the

power

station

that opens during the

day

and closes at

night

.

Water

flows

during the

day

to generate

electricity

through the

power

station

turbines. The generated

electricity

is

then

sent to a national grid through

power

lines

while

the excess

water

runs to a low-level

reservoir

. During the

night

stage, the

water

stored in the low-level

reservoir

is reverted to the

power

station

, and the turbines of the generator pump it back into the high-level

reservoir

, which is closed during the

night

. The

river

water

is stored at the upper level, and later, it

flows

down, starting the cycle again.