The pie charts give information about proportion of energy volume with predictions for time period from 2015 to 2040. The units of measurements are gigawatts (GW).
It is clear that in 2015 fossil fuels were the largest proportion of the energy capacity (64 %). But it will decrease to 44 % in 2040 as well as other renewables, which percentage will be declined by 2 %. Also, the nuclear power will fall from 6 % to 5 %.
On the other hand, wind power capacity will grow from 5 % to 12 %, which is more than double in 2015. The greatest rise we can see on pie charts is solar power increase, because the percentage in 2015(2 % of total) will multiply in 9 times in 2040(18 %).
Overall, through all years from 2015 to 2040 fossil fuels will remain the most important part of energy volume. Also, the most marvelous development we will see is solar power growth in 2040.