Analysis of greenhouse gas emissions from electric vehicle consideringelectric energy structure, climate and power economy of ev: A China case

Özet

Electric vehicle (EV) is considered as a powerful tool for reducing greenhouse gas (GHG) emissions. The ef-fectivenessofEVindecreasingGHGemissionsisinfluencedbyfactorssuchaselectricenergystructure,climateand power economy of EV, needs to be further explored. Consequently, a modified electric vehicle emissionsindex(MEVEI)modelisestablishedtoconductaChinacasestudyandquantifytheeffectofthesefactorsontheGHGemissionsofEVin31provinces.Theprovincesaredividedintoeightclustersviak-meansclusteranalysisofelectricenergystructureandclimate.AfterclusterswithasimilarpowereconomyvalueofEVarecombined,theeightclustersaremergedintofive.ForprovincesinclusterIIIandIVwherefossil-fuelelectricityaccountsformore than 80%, the GHG emissions of EV can be reduced through trade-off between fossil-fuel electricityproportion and power economy of EV. When the temperature is sub-zero, the GHGemissions of EV are higherthanthoseoffuelvehicle(FV);whenthetemperatureisabove25°C,theusageofEVcanbepromotedtomaketheGHGemissionsofEVlessthanthoseofFV.WhenthepowereconomyvalueofclassIIIEVdecreasesby20%,EV deployment can reduce the GHG emissions in provinces except cluster V. Policy recommendations are for-mulated in consideration of the specific obstacles of EV promotion. Moreover, the result establishes a solidfoundation for accurate performance evaluation of the GHG emissions of EV for four quarters in 31 China'sprovinces.