The pie charts depict the percentage of capacity measured in gigawatts for the year 2015, along with predictions for 2049. Overall, it is evident that the usage of fossil fuels was the highest compared to other energy sources in both years. However, nuclear energy contributed the least in the data provided.
To start, in 2015, the total proportion of fossil fuels accounted for 64 percent, with expectations indicating a remarkable increase to 44 percent by 2049. In contrast, while fossil fuels saw significant growth, they continued to outpace other energy sources in both years. Wind power emerged as the second most utilized energy source, with a total of 23 percent in 2015; however, it is predicted to decline slightly to 3 percent by 2049.
An important observation is that three energy resources – Solar, Nuclear, and Other Renewables – exhibit quite similar percentages. The total percentages for Other Renewables and Nuclear were nearly the same at 6 percent and 5 percent, respectively, while Solar energy had the lowest contribution at only 2 percent. Interestingly, predictions for 2049 suggest an increase in Solar energy usage from 2 to 18 percent. The two least utilized energy sources show noticeable growth by 2049, except for Nuclear energy which is expected to experience a slight decrease, reaching only 1 percent.