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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by

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which the electricity is created in a hydroelectric power station.

Overall

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, it is evident that

water

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flows from and to the high-level

reservoir

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throughout the day.

First,

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the river

water

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is stored

the

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in the

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high-level

reservoir

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

Then

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, the released supply of

water

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flows through the tubes that connect the

turbines

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and dam, the flow

is lead

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leads

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to the

turbines

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. The

turbines

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

water

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is sent to the low-level

reservoir

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

then

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to the national grid.

However

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,

in

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at

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the

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apply

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night, the process is reversed, in which the

water

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from

low-level

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the low-level

a low-level

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reservoir

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is pumped upwards by the

turbines

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. The

turbines

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direct the

water

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from

bottom

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the bottom

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to the high-level

reservoir

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, in which it is stored

from

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for

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the next day’s electricity production.