From the demand perspective, the impact of these efficiency gains on emerging economies will be larger, in the sense that the energy intensity of their GDP growth will be lower than that of advanced economies when the latter were at similar levels of GDP. China is, in fact, projected to move onto a less energy-intensive development path by 2020. 41.
From the supply perspective, the shale revolution, first for gas and then for oil, is expected to contribute almost a fifth of the increase in global energy supply by 2030. A roughly similar positive contribution is likely from renewable sources of energy – expected to treble by 2030.