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This graph shows how cumulative greenhouse gas emissions reductions in all major emitting sectors produce a large decrease in total emissions. Basecase emissions without any interventions are projected to rise to from 26 MtCo2e in 1990 to 55 MtCO2e in 2050. Cumulative reductions from major emitting sectors after the introduction of the emissions trading scheme in 2008 are projected to decrease emissions to around 12 MtCO2e in 2050. The major emitting sectors are as follows: electricity where emissions reductions will come from reduced demand, renewable generation and carbon capture and storage; industry where emissions reductions will come from improvements in efficienncy, fuel switching and renewables and carbon capture and storage; residential commercial; transport where reductions will come from less traffic and a shift in mode of transport, improved vehicle efficiency and new fuels.