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Province-Level Decarbonization Potentials for China's Road Transportation Sector
Min Liu1, Yifan Wen1, Xiaomeng Wu1
1School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China.
Environmental Science & Technology
|October 1, 2024
Summary
China's road transportation CO2 emissions can be significantly reduced through strategic decarbonization. Electrifying passenger vehicles is key to reaching peak emissions before 2030, supporting climate goals.
Area of Science:
- Environmental Science
- Transportation Engineering
- Climate Policy
Background:
- Road transportation is a major contributor to China's carbon dioxide (CO2) emissions, impacting national climate targets.
- Understanding mitigation potentials of current policies and identifying new strategies is crucial for effective decarbonization pathways.
Purpose of the Study:
- To comprehensively analyze CO2 emissions from China's on-road vehicles.
- To evaluate the mitigation potential of announced policies and explore additional strategies for various vehicle fleets.
- To support China's dual-carbon goals by providing insights into low-carbon transportation transitions.
Main Methods:
- Utilized real-world databases and up-to-date policy scenarios for comprehensive analysis.
- Developed integrated scenarios to project future CO2 emissions under current trends and announced policies.
- Conducted scenario analysis to identify heterogeneous decarbonization strategies for different vehicle types.
Main Results:
- China's road transportation CO2 emissions were an estimated 1102 million tons in 2022 and projected to increase without new strategies.
- Under the integrated scenario, annual CO2 emissions are forecasted to peak at 1235 Mt in 2025, declining to ~200 Mt by 2050.
- Electrification of passenger vehicles is the most critical strategy for achieving carbon peak before 2030.
Conclusions:
- Fuel economy improvements for conventional vehicles are effective for truck CO2 reduction until 2035.
- New energy vehicle promotion offers significant long-term mitigation potential for all fleets.
- Heterogeneous strategies tailored to vehicle types are essential for optimizing China's low-carbon transportation transition and achieving climate objectives.
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