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.

The illustration portrays the step-by-step process

at

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which the electricity is created in a hydroelectric power station.

Overall

, it is evident that

water

flows from and to the high-level

reservoir

throughout the day.

First,

the river

water

is stored

the

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in the

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high-level

reservoir

by a dam during the night and it is released in the day.

Then

, the released supply of

water

flows through the tubes that connect the

turbines

and dam, the flow

is lead

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leads

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to the

turbines

. The

turbines

spin manufacturing current with the help of the generator, and the

water

is sent to the low-level

reservoir

. After that, the current is passed to the power grid and

then

to the national grid.

However

,

in

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at

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the

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night, the process is reversed, in which the

water

from

low-level

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the low-level

a low-level

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reservoir

is pumped upwards by the

turbines

. The

turbines

direct the

water

from

bottom

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the bottom

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to the high-level

reservoir

, in which it is stored

from

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for

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the next day’s electricity production.