The line graph illustrates the consumption of six different fuel types in Country A from 2000 to 2020, with projections until 2050. The figures are measured in quadrillion units.
Overall, petrol and oil remained the dominant energy source throughout the period, while nuclear, solar/wind, and hydropower had the lowest usage. Most fuel types showed either growth or fluctuation over time.
Petrol and oil started at 35 quadrillion units in 2000 and peaked at around 41 in 2020. It is projected to rise steadily to 47 by 2050. Coal increased significantly from 16 to 24 units in the first 15 years and is expected to reach 33 units in the future. Natural gas fluctuated during the period and is forecast to peak at 25 units in 2035.
Nuclear, solar/wind, and hydropower began at around 4 units. Nuclear is projected to rise to 7 units by 2025. Solar and wind are expected to gradually increase to 6 units, while hydropower is forecast to remain relatively stable at around 3 quadrillion units.
