The charts depict the percentages of energy capacity measured in gigawatts or GW, and makes a comparison between 2015 and the perspective for 2040.
Overall, the highest amount of energy was offered by fossil fuels, and it is predicted to be the principal source in the long run.
Turning to the details, in 2015 the highest percentage of energy was offered by fossil fuels, 64% to be exact. While the second most important source was other renewables, which represented 23% of energy. Regarding to solar capacity, it offered the lowest percentage of GW obtained, just 2%. Concerning 2040, the total amount of energy will be higher than in 2015, obtaining 11.678 GW. It is thought that, fossil fuels are going to offer 44% of total energy, slightly less than in the past. Nevertheless, solar percentage will experience a considerable uplift to 18% compared with 2015. About nuclear sources, it is thought they will diminish mildly from 6% to 5%.
Finally, wind source use to represent 5% of the total energy, but in 2040 it will twice to 12%.