Academic Writing Task 1 · pie chart

Comparison of Global Energy Consumption and Electricity Generation by Source

The two pie charts below show total world energy consumption and electricity generation for last year.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words.

Total World Energy Consumption (%)
  • Combustible Renewables & Waste: 10.6%
  • Hydro: 2.2%
  • Nuclear: 6.5%
  • Gas: 20.9%
  • Oil: 34.3%
  • Coal: 25.1%
  • Other: 0.4%
View the data
CategoryValue (%)
Combustible Renewables & Waste10.6
Hydro2.2
Nuclear6.5
Gas20.9
Oil34.3
Coal25.1
Other0.4
Total World Electricity Generation (%)
  • Hydro: 16.1%
  • Nuclear: 15.7%
  • Gas: 19.6%
  • Oil: 6.7%
  • Coal: 39.8%
  • Other: 2.1%
View the data
CategoryValue (%)
Hydro16.1
Nuclear15.7
Gas19.6
Oil6.7
Coal39.8
Other2.1

Chart redrawn by BandLadder from the data in the original IELTS practice task. Many IELTS practice tasks come from the Cambridge IELTS series (Cambridge University Press & Assessment); all rights in the original tasks remain with their owners.

Band 8 sample answer

The two pie charts illustrate the distribution of energy sources for total world consumption and electricity generation during the previous year. Overall, it is evident that fossil fuels remain the dominant energy source in both categories, although their proportional usage varies significantly between total consumption and electricity production.

Regarding total energy consumption, oil is the most significant contributor, accounting for 34.3% of the total, followed by coal at 25.1% and gas at 20.9%. Combustible renewables and waste represent 10.6%, while nuclear energy and hydro power contribute 6.5% and 2.2% respectively. The 'other' category constitutes a negligible 0.4%.

In contrast, electricity generation relies more heavily on coal, which provides 39.8% of the total output. Gas and hydro power are also substantial contributors at 19.6% and 16.1% respectively, while nuclear energy accounts for 15.7%. Oil's contribution to electricity generation is notably lower than its share of total consumption, standing at only 6.7%. Finally, other sources make up 2.1% of electricity generation. Notably, hydro power's share is over seven times higher in electricity generation than in total energy consumption, highlighting its specific application in power grids.

183 words. Every figure in the answer comes from the chart above.

How to write about pie charts

account for
to make up a specific portion or percentage
dominant
having the most influence or the largest share
constitute
to be the parts that form something
notably
in a way that is worthy of attention
in contrast
used to show a difference between two things
proportional
corresponding in size or amount to something else

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Frequently asked questions

What should the overview say?

While oil is the primary source for total energy consumption, coal dominates the electricity generation sector, and renewable sources play a significantly larger role in electricity production than in total energy use.

How long should an IELTS Task 1 answer be?

At least 150 words; 170 to 200 is the safe range. Spend about 20 minutes on it and leave 40 for Task 2, which carries twice the marks.

How do I describe pie charts?

Name the largest and smallest shares in the overview. Use proportion language: a quarter, just under half, the majority. With two pies, compare the same slice across both.

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