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Future energy demand and supply
Future energy demand and supply

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Figure 2 (a) Energy consumption per capita per year for different regions and for the world as a whole, highlighting the contrast in consumption between industrialised and developing regions. These figures are for commercially traded fuels only, which neglects the >10% contribution from 'traditional biomass' shown in (b). Note: The bars refer to individual years. (b) Percentage contributions of energy sources to global primary energy consumption in 2002. Note: The contributions from nuclear, hydro and other renewable power sources are the inputs that would be needed to produce the actual outputs at 38% plant efficiency (i.e. an approximation, to compare them with fossil fuel contributions). If the actual electricity outputs of these minor sources were used in this diagram, their contribution figures would be substantially lower.

 1 The present-day perspective