| Energy Source | 2020 Actual (EJ) | 2050 Forecast (EJ) |
|---|---|---|
| Oil | 175 | 140 |
| Coal | 150 | 85 |
| Natural Gas | 130 | 155 |
| Renewables (Solar, Wind, Biomass) | 35 | 190 |
| Hydroelectric | 30 | 45 |
| Nuclear | 25 | 35 |
With reference to Figure 1, explain one possible cause of the forecast change in total global energy demand.
