A burden-sharing model shaping the embodied carbon emission and considering regions' efforts to reduce emissions in China's power sector

To achieve "carbon peaking and carbon neutrality", reasonable burden-sharing for emission reductions among key players is critical. And reasonable burden-sharing requires scientific clarification of their actual emissions and responsibilities, and full accounting of efforts to reduce emissions. Therefore, this paper focuses on China's power industry and proposes a burden-sharing model that reflects regions' embodied carbon emissions and mitigation efforts. Moreover, considering the economic spillover effects of the power industry in different regions to re-define China's sub-regional emission reduction targets. Results show a significant difference in the flow of electricity embodied carbon among China's regions. The carbon embodied in the power industry increased by 948 million tonnes between 2012 and 2017, mainly due to changes in the structure of final demand and production. Furthermore, implementing the Emissions Trading System (ETS) has effectively curbed carbon emissions in seven pilot provinces and cities, namely Beijing, Tianjin, Shanghai, Guangdong, Hubei, Chongqing, and Fujian, especially Beijing. Spillover effects significantly impact the economic growth of provinces, and some provinces that have enjoyed the benefits of spillover effects should take more responsibility for emission reductions. In summary, each region has different allowances and it is suggested that differentiated policies should be implemented to promote regionally-ordered low-carbon development and achieve the dual-carbon goal.