THEU.S.ANDCHINANEEDDECARBONIZINGTHEPOWERSECTORTOREDUCEMETHANEEMISSIONS,INTHEU.S.ANDCHINASUBSTANTIALLYANDCOLLABORATIVELYDECARBONIZINGTHEPOWERSECTORINTHEU.S.ANDCHINAMikeO’Boyle,EnergyInnovationMaxDupuy,RegulatoryAssistanceProjectOrganizationsarenotedforaffiliationpurposesonly.Thispaperrepresentsauthors’views,andnotnecessarilythoseoftheirinstitutions.KEYISSUESANDTRENDSTogether,theUnitedStates’andChinesepowersystemsemitted5,780millionmetrictonsofcarbondioxideequivalent(CO₂e)in2020,about36%ofthetwocountries’and17%oftheworld’sannualcarbonemissions(InternationalEnergyAgency2022).Consensusisgrowingamongthescientificcommunitythatmajorityrenewables-basedelectricitysystemsexceeding80%carbon-freecanbeoperatedreliablyandatlowcost,withoutdevelopingnewtechnologies(Abhyankaretal.2022;MacDonaldetal.2016;Novacheck,Brinkman,andPorro2018;NREL2012;Phadkeetal.2020).TheU.S.andChinafacesimilarphysicalandpolicychallengestotransformtheirpowersectors,despitedifferenteconomicandinstitutionalconditions.Thetransitiontoarenewables-basedelectricitysystemisalsoessentialfordecarbonizingend-uses–suchastransportationandheatingofbuildings–throughelectrification.TheNationallyDeterminedContributions(NDC)ofbothcountriesundertheUnitedNationsFrameworkConventiononClimateChangeincludesignificantpowersectorcommitments.Figure1U.S.andChinaElectric...
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