Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 12 · 2026-10-08

IELTS Writing Task 1 question

The diagram below shows how geothermal energy is used to produce electricity.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

Student answer (Band 6.0)

Given is the diagram which showcases the production of electricity using geothermal energy.

At the first stage, cold water stored in a water tank is pumped 4.5 km deep down the ground reaching to the injection well.

Subsequently, water gets injected through the hot rocks also called as Geothermal zone via appropriate pipelines used in the sytstem which reaches to the production well.

Following this, hot water is pumped up through the production well all the way up to the condenser which is situated on the ground.

At this stage, the hot water gets condensed transforming into steam which then passes to the final stage of the process, the generator turbine.

Eventually, the turbine rotates due to passing of the steam which simultaneously leads to the production of electricity through the generator as both are connected components encased as a single working unit.

Generator is connected to the electric gridlines resulting in transmission of generated electricity to the respective powerstations.

AI examiner evaluation

Task Achievement / Task Response: Band 5.0

You identify the main sequence from pumping cold water underground to generating electricity, and correctly include the 4.5 km depth and the roles of the injection and production wells. However, the account is only partly complete because it lacks a clear overview of the process as a whole and misstates an important stage: the condenser does not condense hot water into steam; rather, the heated water is converted to steam there. The final description also says the generator connects to “electric gridlines” and power stations, whereas the diagram shows a connection to a transmission pylon. Some details, such as the pipelines being “appropriate,” are not shown. A concise overview and more precise reporting of the condenser and output would make the key features clearer.

Coherence and Cohesion: Band 6.0

The stages are presented in a generally logical order, and sequencing phrases such as “At the first stage,” “Subsequently,” and “Following this” help the reader follow the process. The progression from underground water movement to electricity generation is easy to recognise. However, the response is written as a series of separate stage descriptions without an overview that groups the process into its main phases. Some linking is also mechanical, with several consecutive transitions announcing the next step rather than showing relationships between stages. The final sentence introduces transmission after the generation stage but could connect this more smoothly. Organising the response into an overview followed by the underground and surface stages would strengthen the overall progression.

Lexical Resource: Band 6.0

You use a reasonable range of process vocabulary, including “injection well,” “production well,” “condenser,” “steam,” and “transmission,” which makes the topic clear. There are also attempts at more formal phrasing, such as “simultaneously leads to the production of electricity.” However, some choices are inaccurate or awkward for describing a diagram: “water gets injected through the hot rocks” is less precise than saying it passes through the geothermal zone, and “generator turbine” confuses two separate components. “Electric gridlines” and “powerstations” are also not the labels or most natural terms for the diagram. Aim for concise, standard process language and use the diagram’s component names consistently; this will improve precision without requiring more elaborate vocabulary.

Grammatical Range and Accuracy: Band 6.0

The response includes both straightforward statements and longer structures, for example, “Following this, hot water is pumped up through the production well…” and the final clause beginning “as both are connected…”. Most meanings remain clear, and passive forms are appropriately used to describe the process. Some grammatical choices are less controlled, however. In “reaching to the injection well,” the participle construction is awkward, while “also called as Geothermal zone” has an incorrect pattern and unclear capitalisation. The sentence beginning “At this stage” also makes the relationship between hot water, condensation and steam difficult to follow. Use direct clauses with clear subjects and check verb patterns and punctuation in longer sentences to improve accuracy.

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