Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 14 · 2026-07-24

IELTS Writing Task 1 question

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.

Student answer (Band 6.0)

The flow diagram illustrates the production of electricity in a hydroelectric power station.The process begins with a river which flows and continues through a series of mechanical steps, ultimately resulting in the production of electricity.

The process begins with the river water is stored with the support of dam walls which has high capacity to store.In this phase the intake was open at day time and closed in night times. Electricity generate in day time when the water flow towards downside , subsequently the pumping of water towards upside is scheduled at night sessions.

Following the turbines it is reversible it is combined of two mechanism it can operate generator in sun period and in darkness sends the water into upper level of reservoir.

The working of generator is placed at power station they set up the pipe lines to supply the power from station to national grid.

Finally,in the last stage low level reservoir keep to water to dispatch into the turbines from down to up.

AI examiner evaluation

Task Achievement / Task Response — Band 6.0

The response covers the main features of the process, such as the dam, turbines, and the cycle between reservoirs. However, the description is somewhat disjointed and lacks a clear, logical flow. While the key stages are mentioned, the explanation of the 'day' and 'night' cycle is slightly confusing, and the technical details regarding the 'low level reservoir' are not clearly linked to the overall process. To improve, ensure that the relationship between the components is explained more precisely and that the summary highlights the cyclical nature of the power generation more effectively.

Coherence and Cohesion — Band 6.0

The essay is divided into paragraphs, which helps the reader follow the structure. However, the use of cohesive devices is limited and sometimes mechanical. Phrases like 'The process begins with' are repeated, and transitions between sentences are often abrupt, making the progression of ideas feel disjointed. For instance, the transition between the turbine mechanism and the power station is sudden. Using a wider variety of linking words (e.g., 'subsequently,' 'consequently,' 'in turn') would help improve the flow and logical connection between the different stages of the hydroelectric process.

Lexical Resource — Band 6.0

The vocabulary is generally adequate for the task but lacks the precision required for a higher band. There is some repetition of basic terms like 'process,' 'water,' and 'day/night.' Some word choices are slightly unnatural, such as 'sun period' or 'darkness,' which are not standard terminology for technical descriptions. To achieve a higher score, try to incorporate more specific vocabulary related to engineering or processes, such as 'intake valve,' 'reversibility,' 'electricity generation,' or 'transmission,' and ensure that collocations are used correctly.

Grammatical Range and Accuracy — Band 5.5

There are frequent grammatical errors throughout the text, particularly with subject-verb agreement (e.g., 'Electricity generate in day time') and sentence structure (e.g., 'the river water is stored with the support of dam walls which has high capacity to store'). The use of articles and prepositions is also inconsistent. While the meaning is generally clear, the high frequency of errors in basic sentence construction limits the score. Focusing on sentence variety and ensuring that complex sentences are punctuated correctly would significantly improve the clarity and accuracy of your writing.

Browse more IELTS Writing model answers or get your own writing scored by the same AI examiner.