The pie charts depicts the proportions of source of materials that is used to generate electricity or energy in the two years, 2008 and 2030.
Overall, the materials dominates in 2008 and 2030 differs, which is coal and oil respectively. The percentage of usage of all sources has shown an upward trend when the time passed, with coal as the exception.
In 2008, coal had the highest usage of 39%, which was 6.5% greater than the second common source, oil. Wind, hydra and solar was the least used materials, all were less than 1%.
By 2030, there will be a dramatic reduction of proportion of coal used, which is 16.7% less than in 2008. Moreover, a significant rise will be observed in the percentage of gas, with an increase of 9.1%. And a new source of energy, geothermal will be used and replaced solar energy, although only occupy 4.3% out of all sources.
