The pie charts compare the percentage of energy generated from five sources—coal, gas, nuclear, hydro, and other renewables— in a country in 1990 and 2010.
Overall, the energy mix in the country saw a considerable shift over the two decades, with gas emerging as the leading source by 2010, while coal’s contribution decreased slightly. The share of nuclear energy grew, while hydro and renewable sources saw minor increases.
In 1990, coal was the largest source of energy, contributing 30% to the total energy production, followed by gas at 25%. Nuclear energy accounted for 20%, while hydro and other renewables made up 15% and 10%, respectively. At that time, coal and gas together accounted for more than half of the energy production, reflecting a reliance on fossil fuels.
By 2010, the energy mix had diversified significantly. Gas became the largest energy source, accounting for 30%, surpassing coal, which decreased slightly to 28%. Nuclear energy’s share grew to 25%, while hydro remained constant at 15%. The proportion of energy derived from other renewables rose to 12%, reflecting a shift towards cleaner energy sources. Although coal and hydro still formed the largest part of the energy mix, the increased reliance on gas and nuclear marked a move towards more sustainable energy production.