The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words.

The diagram explains the

process

through which the

water

is used to produce

electricity

in a hydroelectric station.

Overall

, it is evident that it is an artificial

process

using the

water

of the river, which is comprised of 5 stages. The

process

commences with storing the river's

water

in a high-level

reservoir

and ends with providing the National grid with

electricity

. In detail, the

process

starts when the

water

from the river comes to the high-level

reservoir

and is stored in

this

place by a high dam. In the daytime, the stored

water

goes through a pipeline to the low-level

reservoir

by twisting the reversible turbines.

Following

this

,

this

action will operate a generator resulting in the generation of

electricity

.

This

electricity

will be transmitted to the national grid by power lines.

On the other hand

, the direction of the

water

will be opposite at night: the

water

pumps into the high-level

reservoir

from the low-level

reservoir

. The dam plays a significant role, which is closed at night and opened in the daytime. The cycle is

then

repeated every day