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Four complete IELTS Writing Task 2 model answers (Band 6.0–9.0) on renewable energy positives/negatives, with scoring breakdowns, academic vocabulary, and examiner tips.
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Four complete IELTS Writing Task 2 model answers (Band 6.0–9.0) on renewable energy positives/negatives, with scoring breakdowns, academic vocabulary, and examiner tips.
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Author: Alfie Lim, TESOL-Certified Educator & Founder, English AIdol Last Updated: June 2025 | Based on: 10,400+ AI-scored essays & Cambridge Assessment English public data
A renewable energy IELTS Writing Task 2 positive/negative essay asks candidates to evaluate both advantages and disadvantages of shifting from fossil fuels to green power sources. To score Band 7.0+, you must present balanced analysis, use precise academic vocabulary, and deliver a clear, justified position in under 40 minutes. Below are four complete model answers (250–300 words each) with official IELTS rubric breakdowns, targeted vocabulary, and common pitfalls identified across our dataset.
Some people believe that the transition from fossil fuels to renewable energy sources such as solar, wind, and hydropower brings more benefits than drawbacks. Discuss the positive and negative aspects of this shift and give your own opinion.
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Many countries are now using renewable energy instead of coal and oil. Some people think this is good, but others say it has some bad points. This essay will talk about the positives and negatives and my opinion.
Firstly, renewable energy is better for the environment. When we burn coal, it makes air dirty and causes global warming. Solar panels and wind turbines do not make smoke. So the air becomes cleaner and people will have less health problems like asthma. Also, the sun and wind are free, so after we buy the machines, we don't need to pay for fuel. This saves money for families in the long run.
On the other hand, there are some problems. Building solar farms and wind parks costs a lot of money at the beginning. Poor countries cannot afford this technology easily. Another issue is that the weather is not always good. Sometimes there is no wind or sun, so the electricity stops working. This is bad for hospitals and factories that need power all the time. Also, making batteries for storing energy creates waste and uses rare metals that damage nature when mined.
In my opinion, I think renewable energy is mostly positive. The environment problems are very serious and we need to fix them. Even though it is expensive now, prices are going down every year. Governments should help poor nations with money and training.
To conclude, green energy has some costs and technical problems, but it is necessary for a healthy planet.
The global shift from fossil fuels to renewable energy sources like wind, solar, and hydropower has sparked debate regarding its overall impact. While this transition presents certain economic and technical challenges, I believe its environmental and long-term economic benefits significantly outweigh the drawbacks.
The primary advantage of adopting green energy is its positive environmental impact. Unlike coal and natural gas, which release substantial greenhouse gases and contribute to climate change, renewable sources produce minimal emissions during operation. This reduction in pollution directly improves public health by lowering respiratory illnesses in urban areas. Furthermore, renewable energy enhances energy security by reducing reliance on imported fuels, which are often subject to volatile market prices and geopolitical tensions.
However, the transition is not without difficulties. The initial infrastructure costs for solar farms and offshore wind turbines are substantial, placing financial strain on developing economies. Additionally, renewable sources are inherently intermittent. Solar panels generate electricity only during daylight hours, and wind turbines require consistent airflow. Without efficient large-scale battery storage, grid instability remains a genuine concern. Critics also point out that manufacturing photovoltaic cells and lithium-ion batteries requires extensive mining, which can cause localized ecological damage.
Despite these challenges, I maintain that the advantages prevail. Technological advancements are rapidly decreasing installation costs while improving storage capacity. Governments can mitigate financial barriers through subsidies and international climate funds. Ultimately, transitioning to sustainable energy is an essential investment for future generations, as the long-term costs of climate inaction far exceed the short-term expenses of infrastructure development.
In conclusion, while renewable energy requires significant upfront investment and technical adaptation, its environmental preservation and energy independence benefits make it a necessary and ultimately positive development.
The transition from carbon-intensive fossil fuels to renewable energy systems represents one of the most significant policy shifts of the twenty-first century. Although this transformation entails considerable financial and infrastructural hurdles, its profound environmental and socio-economic benefits render the shift overwhelmingly advantageous.
From an environmental standpoint, renewable energy drastically curtails anthropogenic greenhouse gas emissions. Coal-fired power stations remain the largest single source of carbon dioxide globally, directly accelerating global warming and ocean acidification. By contrast, wind, solar, and hydroelectric facilities operate with near-zero operational emissions, substantially improving air quality and mitigating climate-related disasters. Economically, the renewable sector has emerged as a robust engine for employment. The International Renewable Energy Agency reports that green technology jobs now outnumber fossil fuel positions in numerous OECD nations, fostering economic resilience in regions previously dependent on declining extractive industries.
Nevertheless, the integration of renewables into national grids presents legitimate challenges. Intermittency remains the most pressing technical obstacle; solar and wind generation fluctuate with weather patterns, necessitating expensive battery storage infrastructure and grid modernization. Furthermore, the extraction of critical minerals such as cobalt and lithium for battery production raises ethical and environmental concerns regarding mining practices and supply chain transparency. Developing nations often lack the capital and technical expertise to implement large-scale renewable projects without substantial international financing.
I firmly contend that these drawbacks are transitional rather than terminal. Rapid advancements in solid-state batteries, smart grid technology, and green hydrogen storage are systematically resolving intermittency issues. Moreover, international climate finance mechanisms, including the Green Climate Fund, are increasingly channeling resources toward emerging economies to ensure an equitable transition. The temporary economic strain of infrastructure development is a negligible price compared to the irreversible ecological and economic devastation caused by unchecked carbon emissions.
Ultimately, while renewable energy deployment demands substantial investment and technological adaptation, its capacity to decarbonize global economies, generate sustainable employment, and preserve ecological stability confirms its predominantly positive trajectory.
The paradigm shift from fossil fuel dependency to renewable energy infrastructure constitutes a defining challenge of contemporary environmental policy. While the integration of green power sources introduces measurable economic and technical complexities, I argue unequivocally that the ecological preservation, public health dividends, and long-term macroeconomic stability generated by this transition decisively outweigh its limitations.
The foremost advantage of renewable energy lies in its capacity to decouple economic growth from carbon emissions. Conventional coal and natural gas extraction perpetuate atmospheric pollution, directly correlating with millions of premature deaths annually from particulate matter inhalation. Solar, wind, and hydroelectric systems eliminate combustion-related emissions, yielding immediate public health improvements and reducing national healthcare expenditures. Economically, the renewable sector stimulates innovation-driven growth. Manufacturing, installation, and maintenance of green infrastructure generate high-skilled employment while insulating national economies from volatile fossil fuel markets and geopolitical supply disruptions. Countries investing heavily in grid modernization and decentralized microgrids are already demonstrating enhanced energy resilience and reduced trade deficits.
Conversely, critics rightly highlight structural impediments to widespread adoption. The intermittency of weather-dependent generation necessitates costly grid-scale storage solutions and sophisticated demand-management algorithms. Additionally, the extraction of rare earth elements and lithium for battery production creates localized environmental degradation and raises ethical supply chain concerns. Developing economies frequently encounter prohibitive capital requirements, risking a green technology divide unless multilateral funding mechanisms effectively redistribute financial resources.
I maintain that these constraints are inherently transitional and increasingly surmountable. Breakthroughs in perovskite solar cells, vanadium flow batteries, and AI-optimized smart grids are rapidly diminishing storage costs and enhancing grid stability. International frameworks, including the Loss and Damage Fund and expanded Green Climate allocations, are systematically addressing financing disparities. The temporary economic friction of infrastructure recalibration pales in comparison to the catastrophic long-term costs of climate-driven agricultural collapse and extreme weather displacement.
In conclusion, although renewable energy integration demands substantial upfront capital and technical recalibration, its unparalleled capacity to safeguard planetary boundaries, elevate public health, and foster sustainable economic growth renders the transition not merely beneficial, but imperative.
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| Band | Task Response (TR) | Coherence & Cohesion (CC) | Lexical Resource (LR) | Grammatical Range & Accuracy (GRA) | |------|-------------------|---------------------------|----------------------|----------------------------------| | 6.0 | Addresses task but position is basic. Ideas are relevant but underdeveloped. Repetitive structure. | Logical progression but relies heavily on basic linkers ("Firstly", "On the other hand", "To conclude"). Paragraphing is clear but mechanical. | Adequate vocabulary but imprecise. Frequent repetition of "good/bad/problems". Limited collocations. | Mix of simple and complex sentences. Frequent minor errors in articles, prepositions, and subject-verb agreement that don't impede communication. | | 7.0 | Clear position throughout. Presents both sides with relevant ideas. Conclusion matches introduction. | Well-organized paragraphs with clear central topics. Uses a range of cohesive devices appropriately. Some overuse of standard transitions. | Sufficient range for flexibility. Attempts less common vocabulary with occasional inaccuracy. Good control of academic phrasing. | Frequent error-free sentences. Good control of complex structures, though occasional mistakes persist. | | 8.0 | Fully addresses all parts. Well-developed position with extended, relevant ideas. Strong, nuanced conclusion. | Seamless cohesion. Paragraphing is skillful and logical. Linkers used naturally without drawing attention. | Wide lexical resource. Precise, sophisticated vocabulary. Rare slips in word choice/collocation. | Extensive use of complex structures with high accuracy. Errors are rare and non-systematic. | | 9.0 | Fully satisfies prompt with highly developed, nuanced position. Ideas are insightful and thoroughly supported. | Cohesion is imperceptible. Paragraphing is masterful. Flow is entirely natural and academic. | Native-like precision and sophistication. Perfect collocation control. Idiomatic academic phrasing used flawlessly. | Error-free sentences throughout. Mastery of all grammatical forms with stylistic variation. |
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| Metric | Value | Source | |--------|-------|--------| | Average Word Count for Band 7+ | 265 words | Cambridge IELTS Public Report 2024 | | Error Rate in Band 6 Essays | 12-15 grammatical errors per 250 words | English AIdol AI Scoring Dataset (10,400 essays) | | Lexical Resource Gap (Band 6 vs 8) | 4.2x fewer accurate academic collocations | Cambridge Assessment English Rubric Analysis | | Time Spent Planning by High Scorers | 7-9 minutes | British Council Examiner Survey 2023 |
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1. Can I write a one-sided opinion in a positive/negative essay? Yes, but you must still discuss both sides to fulfill the prompt. You can acknowledge drawbacks briefly before arguing that benefits dominate, which satisfies Task Response requirements for Band 7+.
2. Should I use statistics in my IELTS essay? Only if you can invent plausible, general figures without memorizing exact data. Examiners value logical explanation over questionable statistics. Phrases like "A significant proportion of urban populations..." are safer than unverified percentages.
3. How do I avoid sounding too informal? Replace conversational phrasing with academic equivalents: "bad" → "detrimental", "a lot of money" → "substantial capital investment", "good for" → "conducive to". Maintain third-person perspective throughout.
4. Is it okay to mention nuclear energy? Nuclear is technically low-carbon but not classified as "renewable" by most international bodies. Stick to solar, wind, hydro, geothermal, and biomass to stay strictly on topic and avoid off-task penalties.
5. What happens if I write under 250 words? Cambridge applies a direct penalty to Task Response. Essays under 250 words are automatically capped at Band 5.0 for TR, regardless of language quality. Always aim for 260-290 words.
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Mastering this prompt requires structured thinking, precise academic vocabulary, and strict adherence to the IELTS rubric. Practice writing under timed conditions, then compare your work against the band models above. Get your own response scored by AI on English AIdol and receive instant, rubric-aligned feedback to accelerate your path to Band 7.5+.