IELTS Band 9 Essay About the world is heavily dependent on oil for energy
Here we take a look at a band 9 ielts writing task 2 sample about “The world is heavily dependent on oil for energy”. This sample then will be further analyzed for its vocabulary, grammar and format, so we see how it has qualified for such band score. We also suggest over 200 band 9 IELTS samples released in 2025.
Sample Band 9 Essay
The world is heavily dependent on oil for energy, which is unsustainable due to global warming.
What future resource do you think will take oil’s place?
Why do you think this?
The global reliance on oil as a primary energy source has led to significant environmental challenges, particularly global warming. To address this, the world must transition to more sustainable energy resources. Among the alternatives, renewable energy sources such as solar, wind, and hydroelectric power are the most promising candidates to replace oil. These resources are abundant, environmentally friendly, and capable of meeting the growing energy demands of the future.
One of the key advantages of renewable energy is its sustainability. Unlike fossil fuels, which are finite and contribute to greenhouse gas emissions, renewable energy sources are inexhaustible and produce minimal pollution. For instance, solar energy harnesses the power of sunlight, which is available in abundance across most regions of the world. Similarly, wind energy utilizes air currents, which are a natural and perpetual phenomenon. These characteristics make renewables a viable long-term solution to the energy crisis.
Another critical factor is the economic viability of renewable energy. Over the past decade, technological advancements have significantly reduced the cost of producing solar panels and wind turbines. As a result, renewable energy has become increasingly cost-effective, making it accessible to both developed and developing nations. This economic shift is essential for encouraging widespread adoption and reducing dependence on oil.
Moreover, the transition to renewable energy aligns with global efforts to combat climate change. By reducing carbon emissions, these energy sources can mitigate the adverse effects of global warming, such as rising sea levels and extreme weather events. Governments and international organizations must invest in infrastructure and policies to accelerate this transition.
In conclusion, renewable energy is the most suitable replacement for oil due to its sustainability, economic viability, and environmental benefits. While challenges such as energy storage and distribution remain, continued innovation and investment can overcome these obstacles, paving the way for a cleaner and more sustainable future.
5 Academic Vocabulary in the sample for the world is heavily dependent on oil for energy
- Sustainability (/səˌsteɪnəˈbɪləti/)
- Example: The sustainability of renewable energy sources ensures they can meet future energy demands without depleting natural resources.
- Abundance (/əˈbʌndəns/)
- Example: Solar energy is a viable option because sunlight is available in abundance in most parts of the world.
- Economic viability (/ˌiːkəˈnɒmɪk ˌvaɪəˈbɪləti/)
- Example: The economic viability of wind energy has improved due to advancements in turbine technology.
- Cost-effective (/ˌkɒst ɪˈfɛktɪv/)
- Example: Solar panels have become more cost-effective, making them a popular choice for households and businesses.
- Greenhouse gas emissions (/ˈɡriːnhaʊs ɡæs ɪˈmɪʃənz/)
- Example: Reducing greenhouse gas emissions is crucial to combating the effects of global warming.
5 Advanced Grammar Structures and Their Contribution to a Higher Band Score:
- Complex Sentences with Subordinate Clauses
- Example: “Unlike fossil fuels, which are finite and contribute to greenhouse gas emissions, renewable energy sources are inexhaustible and produce minimal pollution.”
- Contribution: This structure demonstrates the ability to link ideas logically and coherently, which is essential for achieving a high band score in Task Response and Coherence & Cohesion.
- Passive Voice for Formal Tone
- Example: “Technological advancements have significantly reduced the cost of producing solar panels and wind turbines.”
- Contribution: The use of passive voice adds a formal tone to the essay, which is characteristic of academic writing and helps in achieving a higher score in Lexical Resource and Grammatical Range.
- Conditional Sentences
- Example: “If governments invest in renewable energy infrastructure, the transition from oil can be accelerated.”
- Contribution: Conditional sentences showcase the ability to discuss hypothetical situations, which is a key aspect of Task Achievement and Grammatical Range.
- Comparative Structures
- Example: “Solar energy is more sustainable than oil because it does not deplete natural resources.”
- Contribution: Comparative structures highlight the ability to analyze and contrast ideas, which is crucial for a high score in Task Response and Coherence & Cohesion.
- Nominalization
- Example: “The transition to renewable energy aligns with global efforts to combat climate change.”
- Contribution: Nominalization (e.g., “transition” instead of “transitioning”) adds sophistication to the writing, improving the Lexical Resource score.
These advanced grammar structures enhance the clarity, coherence, and sophistication of the essay, contributing to a higher overall band score.
Free IELTS Sample Essays with Answers PDF
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