Options for reducing CO2 emissions from the energy supply sector

Abstract Deep reductions in CO 2 emissions from the global energy system are technically feasible over the course of the next century, using various combinations of low CO 2 energy technologies. Moreover, an energy future characterized by deep emissions reduction over the longer term is plausibly achievable with costs for energy services that are approximately the same as estimated future costs of energy services based on conventional energy — given adequate time (several decades) and an economic and political climate conductive to the needed innovations. Strong and sustained investments would be needed for research and development, demonstration and diffusion of a wide range of energy technologies characterized by low or zero CO 2 emissions. Since at present the levels of investment are low and declining, new public and private sector energy innovation policies are needed.

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