The graph illustrates the amount of carbon emissions, measured in million tons, emitted from three different sources: oil, coal, and gas in the UK from 1990 to 2010
Overall, it is apparent that emissions from oil and coal followed a downward trend over the period, while the reverse was true for gas. At the beginning of the period, coal recorded the highest level of emissions in the UK, though it was overtaken by gas at the end.
In 1990, gas was the source that produced the lowest amount of greenhouse gas emissions among the three, standing at around 225 million tons. By contrast, coal recorded the highest figure, at more than 300 million tons at the start of the period. Over the 20-year period, there was a significant increase in emissions from gas; meanwhile, the corresponding figure for coal decreased noticeably. In 2010, the carbon emissions from gas reached a 20-year high of approximately 325 million tons, while emissions from coal bottomed out at nearly 200 million tons, which was around two-thirds of the initial figure.
Regarding oil, its emissions stood roughly between these two extremes at about 275 million tons in 1990. Oil emissions fluctuated over the period. They experienced a slight drop to 240 million tons and then increased to over 250 million tons, before declining to a figure of 210 million tons in the final year, which was a decrease of about 65 million tons compared to the beginning.