The two pie charts illustrate the share of overall energy production by five distinct sources in a European nation in 2000 and 2020, with data measured in percentages.
Overall, it is clear that coal energy accounted for the highest share in 2000, while renewables represented a minority share. However, by 2020, coal witnessed a reversed trend, whereas renewables and gas constituted the dominant portions of the total energy output.
In 2000, coal energy comprised the highest fraction, standing at 42% of total production, followed by gas at just over a quarter (28%). Petroleum and oil came next with 18%, while nuclear and renewable energy accounted for the remaining figures at 8% and 4% respectively.
Turning to 2020, coal energy showed a reversed trend, dropping significantly to 15% of the overall production. By contrast, renewables experienced remarkable growth to reach 30%, matching the figure for gas, which also stood at just under a third. Meanwhile, nuclear energy doubled its contribution to 15%, whereas petroleum saw its share shrink to a marginal 10%.
