Regardless of the source, whether oil, gas, or nuclear, OPEC expects energy consumption to rise by a total of 35%, the highest estimate. The EIA projection is 28% and the IEA’s NPS model 27%. If the policies proposed by the IEA are enacted, the SDS estimate is a far more optimistic 2% increase in energy consumption. Key factors used for modelling energy consumption are population growth, GDP per capita changes and energy consumption averages of industrial and household products. Read more here.