Zhong Zewei, Yu Yang, Zhao Xiaoli
School of Economics and Management, China University of Petroleum, Beijing 102299, China.
Institute for Low Carbon Economy and Policy, China University of Petroleum, Beijing 102299, China.
iScience. 2023 Apr 4;26(5):106565. doi: 10.1016/j.isci.2023.106565. eCollection 2023 May 19.
The accurate estimation of electric vehicle (EV) life cycle greenhouse gas (GHG) emissions is critical for policymakers to predict and manage the reduction of GHG emissions due to transportation electrification. Most previous studies in the Chinese context evaluated the EV life cycle GHG based on the annual average emission factor (AAEF). However, the hourly marginal emission factor (HMEF), which is conceptually more appropriate than AAEF for evaluating the GHG implications of EV growth, has not been applied in China. This study fills this gap by estimating the EV life cycle GHG in China based on the HMEF and comparing it with AAEF-based estimates. It is found that the estimates based on the AAEF substantially underestimate the EV life cycle GHG in China. Moreover, the influences of the electricity marketization reform and changes in the EV charging mode on the EV life cycle GHG in China are analyzed.
准确估算电动汽车（EV）生命周期温室气体（GHG）排放量，对于政策制定者预测和管理因交通电气化导致的温室气体减排至关重要。中国此前的大多数研究基于年均排放因子（AAEF）评估电动汽车生命周期温室气体。然而，小时边际排放因子（HMEF）在概念上比AAEF更适合评估电动汽车增长对温室气体的影响，在中国尚未得到应用。本研究通过基于HMEF估算中国电动汽车生命周期温室气体并将其与基于AAEF的估算进行比较，填补了这一空白。研究发现，基于AAEF的估算大幅低估了中国电动汽车生命周期温室气体。此外，还分析了电力市场化改革和电动汽车充电模式变化对中国电动汽车生命周期温室气体的影响。
