The two pie charts compare the proportion of energy generated from six different sources in a country in 1985 and 2003. Overall, the most striking feature is that Oil remained the dominant source across the period despite its share decreasing substantially. Over the 18 years, there was a general increase in the contribution of all other sources, most notably Natural Gas and Coal.
In 1985, Oil accounted for over half of the total production at 52%. Nuclear energy provided the second-largest share at 22%, meaning these two sources supplied nearly three-quarters of the country’s power. The remaining sources, Natural Gas and Coal, contributed 13% and 8%, respectively, while Hydrogen was negligible at 0%, and Other Renewables stood at just 1%.
By 2003, the pattern of consumption had shifted. Oil’s share fell to 39%, but it continued to dominate. Conversely, Natural Gas overtook Nuclear power, climbing significantly to 23%, whereas Nuclear energy dropped to 17%. Furthermore, Coal’s contribution nearly doubled, rising to 13%. Lastly, the minor sources both expanded, with Hydrogen and Other Renewables each reaching an equal share of 4% of the total energy mix.