The charts show the percentage of power generated from 6 different types of Gareline
Sample Response
The charts illustrate the proportions of energy produced by Hydro, Geothermal, Wind, Gas, Nuclear and others between 1970 to 1990. Overall, it is apparent that the amount of power generated increased over the years except for Hydropower in 1990.
In a more detailed analysis, in 1970, Hydropower accounted for 45% of the total energy yielded, which almost doubled the energy obtained from geothermal. Power from wind, Gas and other forms of careline is insignificant, whereas nuclear energy was not generated at all.
Turning to the power generated in 1980, about three-quarters of it was from hydro which is 76%, while the other guidelines accounted for the remaining one quarter. Geothermal, wind and Nuclear Power were one per cent greater than one another, that is, 8%, 7% and 6%, respectively. Furthermore, Gas and other forms of gasoline produced less than 2% power.
Finally, in 1990, a relatively similar rate of hydro and geothermal energy was yielded, 34% and 39%, respectively. Similarly, the percentage of fuel from Gas and other forms is almost the same. They are 2.5% and 2%, accordingly. The wind gave 7% of power, which is almost half the proportion of nuclear power, which is 15.5%.
IELTS Writing Correction
- 1. Fix time range Original: between Suggested revision: from Why it matters: From must pair with to when marking the endpoints of a period.
- 2. Use lowercase categories Original: Hydro, Geothermal, Wind, Gas, Nuclear Suggested revision: hydro, geothermal, wind, gas, nuclear Why it matters: These energy-source names are common nouns in continuous prose.
- 3. State comparison accurately Original: which almost doubled the energy obtained from geothermal Suggested revision: which was just over double the proportion generated from geothermal Why it matters: Hydro represented 45% while geothermal represented 22% in 1970.
- 4. Name sources clearly Original: Power from wind, Gas and other forms of careline Suggested revision: Power from wind, gas and other sources Why it matters: Careline is not a valid label for any category in the chart.
- 5. Use past tense Original: is insignificant Suggested revision: accounted for relatively small shares Why it matters: The description refers to historical proportions and needs an appropriate past-tense verb phrase.
- 6. Attach figure concisely Original: hydro which is 76% Suggested revision: hydro, at 76% Why it matters: The revised appositive avoids an unnecessary relative clause and tense shift.
- 7. Correct category term Original: guidelines Suggested revision: sources Why it matters: Guidelines does not refer to the energy categories in the chart.
- 8. Remove redundant determiner Original: remaining one quarter Suggested revision: remaining quarter Why it matters: One is unnecessary after the definite phrase the remaining.
- 9. Fix capitalization Original: wind and Nuclear Power Suggested revision: wind and nuclear power Why it matters: This common energy-source name should be lowercase within the sentence.
- 10. Clarify ordered values Original: were one per cent greater than one another Suggested revision: differed from one another by one percentage point Why it matters: The original comparative cannot clearly describe three successively decreasing values.
- 11. Use chart categories Original: Gas and other forms of gasoline Suggested revision: Gas and other sources Why it matters: Gasoline is not the chart's category labeled Other.
- 12. Complete percentage phrase Original: less than 2% power Suggested revision: less than 2% of power each Why it matters: Of power and each clarify that both categories have separate shares below 2%.
Suggested Rewrites
- between from
- Hydro, Geothermal, Wind, Gas, Nuclear hydro, geothermal, wind, gas, nuclear
- which almost doubled the energy obtained from geothermal which was just over double the proportion generated from geothermal
- Power from wind, Gas and other forms of careline Power from wind, gas and other sources
- is insignificant accounted for relatively small shares
- hydro which is 76% hydro, at 76%
Why this response received Band 6.5
The response is strongest in its detailed coverage: it reports most percentages accurately and compares the sources clearly within each year. However, the overview wrongly describes growth in the amount of power rather than changes in percentage shares, and it misses the decisive shift from hydro to geothermal leadership. Rewrite the overview around the dominant sources and the major redistribution of shares, then retain the accurate numerical support.
IELTS Writing Criteria Scores
Task Achievement
Most categories and figures are reported accurately, but the overview misinterprets percentage shares as total power growth and omits the change in the leading source.
Summarise that hydro dominated in 1970 and 1980 before geothermal became largest in 1990, while gas and other sources remained minor.
Coherence and Cohesion
The response progresses logically through the three years, with clear paragraphing and generally effective linking between comparisons.
Make multi-item comparisons more direct so that relationships such as the one-point sequence do not require rereading.
Lexical Resource
There is sufficient range for describing proportions and comparisons, though inaccurate choices such as 'guidelines,' 'gasoline,' and 'yielded' reduce precision.
Use consistent chart vocabulary, especially 'energy source,' 'accounted for,' and 'share of generation.'
Grammatical Range and Accuracy
A mix of simple and complex sentences communicates the data clearly, although errors in comparison structures, articles, and tense recur.
Check comparative clauses and keep past tense consistent when reporting figures from historical years.
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IELTS Academic Writing Task 1
The charts show the percentage of power generated from 6 different types of Gareline
Your response
Write the task yourself, then compare your choices with the annotated response.