The data shows the distribution of the primary energy supply in Japan in fiscal year 2016, broken down by source. That year, petroleum as energy supply source accounted for a share of about 39 percent, followed by coal with 25%.
Petroleum | 39 |
Coal | 25 |
Natural gas | 25 |
Renewables | 7 |
Nuclear | 1 |
Unused energy | 3 |