The line chart shows how energy was consumed by six different sources of fuel in Country A from 2000 to 2020, and predictions until 2050.
Overall, non-renewable energy sources are predicted to continue dominating usage as their figures will generally rise in the future while the sustainable group remains relatively stable.
In 2000, most of the energy in Country A came from fossil fuels, with petrol and oil taking the lead at 35 quadrillion units. Despite some fluctuations in the following years, by 2020, its figure had risen to over 40 quadrillion and is expected to continue this trend to reach approximately 48 quadrillion in 2050. Although both coal and natural gas showed an overall increase from 2000 to 2020, reaching a relatively similar use at around 24 quadrillion, the figure for coal is predicted to grow continually, while the latter shows some fluctuations, reaching 33 and 24 quadrillion in 2050, respectively.
The green energy sources were significantly lower, hovering at nearly 5 quadrillion and are projected to change slightly in the future. In detail, the consumption of nuclear power and solar and wind energy are predicted to rise about 1 quadrillion units from their values in 2020, while hydropower source remains unchanged.
