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 diagram illustrates the process of generating

electricity

using a hydroelectric power station. In general, the process cycle is broadly distributed into

day

and

night

stages with the

day

the

water

flows

downward.

On the other hand

, the

night

stage is when the

water

flows

back into the initial

reservoir

. In the beginning stages of the

day

, the

water

from the river is stored in the high-level

reservoir

. Next stage, the dam can be opened during the

day

and the

water

flows

downward to move the turbine to generate

electricity

. Next stage, the

electricity

is stored in a generator.

Then

, the power station distribution

electricity

to the National grid using Power lines. After that, the

water

to stored in the low-level

reservoir

. In terms of the

night

stages, the

water

flows

in another direction by the turbine at

night

.

Moreover

, the

water

is pumped back to a 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.