The main aim of this WP is to gain insight in the energy system options that would be most cost effective considering both the mitigation option costs and potentials and different climate scenarios. This includes:t
the role of climate change mitigation technologies and options both at the global and regional level in curbing CO2 emissions;
the type and stringency of global and regional policy instruments to achieve global climate control targets;
the costs of CO2 emission reduction efforts under different international burden sharing schemes and deals for cooperation;
renewable technology diffusion rates and barriers as well as the significance of technical innovation in CO2 abatement efforts.