Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 12 · 2026-09-27
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 5.0)
The diagram outline the stages of how geothermal energy is used to produce electricity.
Overall, it is evident that, the process consists of five stages and process begin with cold water pumped down and end with the gernator powered by turbine and produces electrivity.
To begin with, in the first step there are cold water which is pumped down in water at around 4.5 km. then the second step is they gave the injection well in water and then they transfer water to geothermal zone in hot rocks. After this, water are the production well and move to uper side the help of pump.
Furthermore, after the production well water into the condensor which produce a steam in the fourth step. Moreover, steam are send in gernator turbine which are powered by steam. After the process of steam it turn to gernator powered by turbines and produce electricity. After this, geothermal energy is used for electricity.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.0 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response: Band 5.0
The student attempts to summarise the main stages of the geothermal power plant diagram, identifying key components such as cold water being pumped down to a depth of 4.5 km, the injection and production wells, hot rocks, the condenser, turbine, and generator. However, the response lacks clarity and precision in reporting the sequence and relationship between stages. For instance, the transition stating 'after the production well water into the condensor' is grammatically confused and misses important details about how steam is generated and routed. While an overview is attempted, the overall description remains rather fragmented and superficial, leading to a Band 5.0 rating for Task Achievement.
Coherence and Cohesion: Band 5.0
The essay is divided into an introduction and a body section, but paragraphing is poorly handled with no clear separation of distinct steps in the process. Cohesive devices are used mechanically and repetitively, such as the frequent reliance on 'To begin with', 'Furthermore', and 'After this'. In addition, referencing and pronoun use are often unclear or missing, as seen in phrases like 'they gave the injection well in water'. Progression throughout the text feels halting due to awkward transitions between sentences, placing this response firmly in the Band 5.0 range for Coherence and Cohesion.
Lexical Resource: Band 5.0
The student demonstrates a very limited and repetitive vocabulary, relying heavily on basic terms like 'water', 'process', 'step', and 'power'. There are multiple vocabulary and spelling errors, including 'outline' instead of 'outlines', 'gernator' instead of 'generator', 'electrivity', 'condensor', and 'uper side'. Less common lexical items are either absent or incorrectly used, such as 'steam are send in gernator turbine'. The range is minimally adequate to convey a basic narrative of the diagram, but frequent inaccuracies mean the lexical resource aligns with Band 4.5, rounded to Band 5.0.
Grammatical Range and Accuracy: Band 5.0
The student displays a very limited range of grammatical structures, with frequent reliance on simple or poorly formed complex sentences. There are constant errors in subject-verb agreement and word forms, such as 'there are cold water which is pumped', 'water are the production well', and 'steam are send'. Punctuation is also problematic, including run-on clauses and commas placed incorrectly, as in 'it is evident that, the process consists...'. These persistent errors cause frequent strain for the reader, justifying a Band 4.5, which is reported as 5.0 based on standard descriptors.
See this exact question answered at other band scores. The same prompt compared across bands.
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