The pie charts below show the amount of electricity generated by energy source in Scotland for twenty years ago and last year.

The chart below illustrates

index

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the index

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of electricity produced by different energy sources in Scotland for 20 years ago compared to

last

year

.

Overall

, in

this

period

overhelming

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overwhelming

majority of electricity was created by

the

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coal. As can be seen from the chart, 20 years ago gas source was almost a quarter(22.3%),

while

last

year

this

index

was

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slightly decreased to

the

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21.7 per

cent

.

Furthermore

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Furthermore,

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in the

past

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past,

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almost one out of five(19.6%)

energy

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of energy

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was made from

the

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nuclear,

however

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however,

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in the previous

year

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year,

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this

number

was

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marginally increased to

the

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26.4 per

cent

. Turning to the percentage of the hydro natural flow, 20 years ago

this

coefficient was 8.7 per

cent

fractionally higher than the

last

year

.

Moreover

, in

this

given period of time the lowest percentage of energy was generated by the oil. 2.1 per

cent

and 4.0 per

cent

 respectively.