This paper focuses on the deep decarbonization of the transportation sector. The first part of the paper provides an assessment of China’s efforts to stimulate the rapid deployment of electric vehicles. The second part analyzes the CO₂ equivalent reductions from a 20% electric vehicle deployment scenario. It concludes that under most assumptions, emissions will be reduced, but the total reduction will be less than many people believe due to the carbon intensity of battery manufacturing.

With the rapid growth of electric vehicles in China, their benefits should be scientifically identified to support the industry development. Although the life cycle benefits of electric vehicles have been analyzed worldwide, the recycling phase has not been fully studied yet, especially in China. Therefore, this study focuses on the economic and environmental benefits of electric vehicle recycling in China. Based on the technology adopted by leading enterprises, the gross income and reduction of energy consumption and greenhouse gas emissions are calculated to reveal the benefits.

As the single largest greenhouse gas emitter in the world and the source of almost 30 percent of the CO2 released into our atmosphere, China faces an enormous challenge in reaching its goal of zero or negative emissions—known as deep decarbonization.

Henry Lee, Director of the Environment and Natural Resources Program (ENRP), and Dan Schrag, Co-Director of the Science, Technology, and Public Policy Program, head a team of researchers from the U.S. and China who have been examining China’s work in achieving deep decarbonization in the People’s Republic. The team plans to publish its findings in a book to be released in 2019. 

The Belfer Center’s Environment and Natural Resources Program and the Center for Science, Technology, and Education Policy at Tsinghua University held the fifth annual Tsinghua-Harvard Workshop on Low-Carbon Development and Public Policy. This event brought together leading experts on climate and energy from academic, business, and government communities in both the United States and China. This year’s workshop focused on electricity systems and renewable energy penetration.

Electric vehicles maintain the fastest development in China and undertake the responsibility of optimizing energy consumption and carbon emission in the transportation field. However, from the entire life cycle point of view, although electric vehicles have a certain degree of energy consumption and carbon emission reduction in the use phase, they cause extra energy consumption and carbon emission in the manufacturing phase, which weakens the due environmental benefits to some extent. The recycling of electric vehicles can effectively address the issue and indirectly reduce the energy consumption and carbon emission in the manufacturing phase. China is setting up the recycling system and strengthening regulation force to achieve proper energy consumption and carbon emission reduction benefits of electric vehicles.

Electric drive vehicles are equipped with totally different propulsion systems compared with conventional vehicles, for which the energy consumption and cradle-to-gate greenhouse gas emissions associated with vehicle production could substantially change. In this study, the life cycle energy consumption and greenhouse gas emissions of vehicle production are compared between battery electric and internal combustion engine vehicles in China's context.