Distributional Impacts of Carbon Capture in the US Power Sector
研究允许碳捕获技术在美国电力部门部署的成本与空气污染权衡，发现政策类型决定其影响，且对黑人和低收入群体的污染效应最大，但能带来能源成本节约。
While some see carbon capture, utilization, and storage (CCUS) as crucial for cost-effective decarbonization, it faces opposition based on air pollution and equity concerns. To understand this cost–air pollution trade-off, we simulate the potential impacts of allowing CCUS deployment in the US power sector under plausible climate policies. We show that the existence of this trade-off critically depends on the underlying policy, which affects the type of generation CCUS could displace: under a policy that incentivizes coal generation, CCUS might improve health outcomes and reduce costs. When we disaggregate our results, we find that the air pollution (PM2.5) effects of allowing CCUS, positive or negative, are largest for Black and low-income populations. We show that allowing CCUS can yield energy-cost savings, particularly benefiting lower-income communities. Our sensitivity analyses highlight the effects of uncertainties on costs and benefits. Overall, this study contributes to our understanding of broader distributional consequences of allowing CCUS.