Optimizing Negative Emission Technology Portfolios in the Northwest Region with Consideration of Carbon Price Risk
摘要
To effectively address climate change and mitigate global warming, negative emission technologiesNegative emission technologies (NETs) have become the key to achieving deep decarbonization and climate goals. However, in the face of the diversity and complexity of NETs, how to conduct the optimal technology portfolio planning to achieve their large-scale, high-efficiency and sustainable deployment is a key issue that urgently needs to be solved at present. In this study, an optimizationOptimization model is developed based on modern portfolio theory for identifying optimal NETs portfolio. A real case study of Northwest China is conducted to analyze the optimal NETs portfolio with consideration of carbon price risk. The results show that the total negative emissions in the northwest regionNorthwest region would reach 9.23 Gt CO2, and the total economic benefit would be USD 467 billion. Among all NETs, enhanced weathering would make the greatest contribution and would dominate the portfolio of NETs.