The bar charts compare the proportions of energy consumption from five different sources (oil, coal, gas, nuclear power, and other renewable sources) in the UK and the USA in 2000 and 2006.
Overall, oil remained the most widely used source of energy in the USA during both years, while the UK relied more heavily on gas by 2006. Meanwhile, the use of coal declined in both countries, and renewable sources continued to account for the smallest shares.
In 2000, coal was the leading energy source in both nations, accounting for roughly 35% in the USA and about 30% in the UK. Oil consumption was also high, at around 30% in the UK and slightly above 35% in the USA. Gas followed, making up about 20% of energy use in the UK and around 15% in the USA. Nuclear power and other renewables contributed modestly, ranging between 10% and 15%.
By 2006, significant changes had occurred. In the UK, gas became the dominant source, rising sharply to approximately 35%, while coal use dropped to around 15%. Oil use also decreased slightly. In contrast, the USA continued to depend heavily on oil (about 40%), though gas consumption increased moderately. Both countries saw small reductions in nuclear power and renewable energy, each remaining below 10%.
In summary, from 2000 to 2006, the UK shifted its main energy dependence from coal to gas, whereas the USA maintained a strong reliance on oil throughout the period.