Current and Future Greenhouse Gas Emissions Associated with Electricity Generation in China: Implications for Electric Vehicles
详细信息 查看全文
- 作者：Wei Shen ; Weijian Han ; Timothy J. Wallington
- 刊名：Environmental Science & Technology
- 出版年：2014
- 出版时间：June 17, 2014
- 年：2014
- 卷：48
- 期：12
- 页码：7069-7075
- 全文大小：369K
- 年卷期：v.48,no.12(June 17, 2014)
- ISSN：1520-5851
文摘
China鈥檚 oil imports and greenhouse gas (GHG) emissions have grown rapidly over the past decade. Addressing energy security and GHG emissions is a national priority. Replacing conventional vehicles with electric vehicles (EVs) offers a potential solution to both issues. While the reduction in petroleum use and hence the energy security benefits of switching to EVs are obvious, the GHG benefits are less obvious. We examine the current Chinese electric grid and its evolution and discuss the implications for EVs. China鈥檚 electric grid will be dominated by coal for the next few decades. In 2015 in Beijing, Shanghai, and Guangzhou, EVs will need to use less than 14, 19, and 23 kWh/100 km, respectively, to match the 183 gCO2/km WTW emissions for energy saving vehicles. In 2020, in Beijing, Shanghai, and Guangzhou EVs will need to use less than 13, 18, and 20 kWh/100 km, respectively, to match the 137 gCO2/km WTW emissions for energy saving vehicles. EVs currently demonstrated in China use 24鈥?2 kWh/100 km. Electrification will reduce petroleum imports; however, it will be very challenging for EVs to contribute to government targets for GHGs emissions reduction.