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Decarbonizing the Coal-Fired Power Sector in China via Carbon Capture, Geological Utilization, and Storage Technology
Ning Wei1, Zunsheng Jiao2, Kevin Ellett3
1State Key Laboratory for Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, Hubei Province, China.
Carbon capture, utilization, and storage (CCUS) can be a cost-effective solution for China's coal power sector to achieve carbon neutrality. This technology shows economic viability, potentially competing with natural gas and wind power generation.
Area of Science:
- Environmental Science
- Energy Policy
- Chemical Engineering
Background:
- China's coal-fired power sector emitted 3.7 billion tonnes of CO2 in 2017, necessitating decarbonization strategies.
- Carbon capture, utilization, and storage (CCUS) is perceived as costly and risky, hindering its adoption.
Purpose of the Study:
- To assess the cost-effectiveness and feasibility of CCUS deployment in China's coal power sector.
- To determine CCUS's role in achieving national carbon neutrality goals.
Main Methods:
- A comprehensive, national-scale assessment using a bottom-up approach.
- Inclusion of site selection, coal plant screening, techno-economic analysis, and CO2 source-sink matching.
Main Results:
- Over 70% of coal power plants could be cost-competitive with natural gas plants (based on 2017 costs).
- 22-58% of coal power plants could be cost-competitive with onshore wind generation.
- CCUS is identified as a key technology for China's carbon neutrality target.
Conclusions:
- CCUS deployment in China's coal power sector is a viable decarbonization route.
- A supportive grid price policy, similar to renewables and natural gas, is crucial for CCUS commercialization.
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