Building a New-Type Power System to Promote Carbon Peaking and Carbon Neutrality in the Power Industry in China

Power industry is the largest carbon emission sector in China.Therefore,this industry will play an important role in achieving the carbon peaking and carbon neutrality goals( "dual carbon " goals)for the whole society.For this purpose,it is critical to balance four relationships,i.e.relationship between carbon mitigation and energy security,carbon peaking in the short term and carbon neutrality in the long term,the coordinated carbon mitigation in power industry and other industries,and technical feasibility and economic efficiency.This paper proposes the China’s Energy Interconnection scenario to promote carbon peaking and carbon neutrality of the society,which can be divided into three stages,i.e.peaking carbon emissions before 2030,rapid emission reduction during 2030-2050,and comprehensive carbon neutrality before 2060.It is expected that the power system will achieve zero emissions before other industries and contribute negative emissions afterwards,providing emission space for carbon neutrality in other industries across the society.Looking into the future,China’s electricity demand will continue to grow.Clean energy will become the main power source,the use of coal-fired power will be gradually reduced,and gas-fired power will undertake the function of peak-load regulation.Faster progress will be made in forming an overall grid pattern with ultra-high voltage(UHV) grid as the backbone and featuring "west-to-east and north-to-south power transmission,a balanced energy mix,and transnational power interconnection." Finally,this paper discusses a new-type of power system characterized by a high proportion of electricity generated from clean energy,high ratio of electric and electronic equipment,and a high proportion of power transmission and reception,together with summer and winter high load periods,and points out the challenges faced by the new-type power system with a high proportion of renewable energy sources in terms of flexibility,safety,and economic efficiency,and proposes corresponding policy recommendations.