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Band 7+: Electricity generated using renewable and non-renewable energy

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The image shows two bar graphs comparing US electricity generation by energy source in 2009 and 2019, with data in quadrillion Btu: petroleum (2009: 35, 2019: 18), renewables (437: 720), nuclear (799: 809), natural gas (921: 1582), coal (1756: 966), and by renewables type: solar (2: 93), wind (94: 300), geothermal (15: 17), biomass (56: 56), hydroelectric (273: 273).

Given the complexity of the image, the above description may not be entirely accurate.

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The charts illustrate the information related to the various sources of electricity in the United States in the years 2009 and 2019.

Overall, a hike is seen in the renewable sources for generating electricity, with the maximum in wind power. Some non-renewable energy sources show a decline while others show an increase.

On the one hand, the use of petroleum considerably reduced from 57 to 47 billion kilowatt-hours. Nuclear energy picked up a little pace with a hike from 799 to 809. Natural gas showed the maximum growth, from 921 to 1582. Conversely, coal usage subsequently reduced by almost half.

On the other hand, the maximum upsurge was seen in wind power from 94 to 300. Solar energy also showed significant growth from 2009 to 2019. The two being geothermal and plant/animal matter showed almost negligible growth, whereas hydroelectric showed no growth at all.

Word Count: 144

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Overall Band Score

(+/- 0.5)

Vocabulary Complexity:
B2 - Upper Intermediate
Opt for even more advanced words when appropriate.

Grammar Mistakes: N/A

Vocabulary Repetition:

showed: 4

growth: 4

sources: 3

maximum: 3

energy: 3

Try using synonyms for the above words

Task Response

The report covers the main trends and key data points from the graphs, providing a general overview of the changes in electricity generation sources between 2009 and 2019. To improve, include more specific data and comparisons to support your observations. Also, ensure that the units are correctly interpreted and reported. The report falls short of the required 150 words.

Coherence & Cohesion

The report is generally well-organized with a clear structure, using 'Overall,' 'On the one hand,' and 'On the other hand' to guide the reader. However, the transition between paragraphs could be smoother. Consider using more varied cohesive devices to enhance the flow of information. For example, instead of starting multiple sentences with the energy source, try rephrasing to maintain reader engagement.

Lexical Resource

The report demonstrates a good range of vocabulary related to the topic of energy sources. Terms like 'hike,' 'upsurge,' 'considerably reduced,' and 'negligible growth' are used appropriately. To further enhance the lexical resource, consider incorporating more specific or technical vocabulary related to energy production and consumption. Also, avoid inaccuracies, such as stating '57 to 47 billion kilowatt-hours' for petroleum, when the original data is in quadrillion Btu.

Grammatical Range & Accuracy

The report demonstrates a good command of grammar with a variety of sentence structures. While there are no major grammatical errors, attention to detail in areas such as article usage and verb tense consistency could further improve the accuracy. For example, 'a hike is seen in the renewable sources' could be refined for better clarity and conciseness.

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