Location-specific co-benefits of carbon emissions reduction from coal-fired power plants in China

Spatially nuanced policies are necessary for maximising co-benefits of carbon-emissions reduction from coal-fired power plants. Here the authors present an approach integrating costs of CO2 and air pollution emissions to better understand social costs of electricity generation from coal burning in China. Climate policies that achieve air quality co-benefits can better align developing countries' national interests with global climate mitigation. Since the effects of air pollutants are highly dependent on source locations, spatially nuanced policies are crucial to maximizing the achievement of co-benefits. Using the coal power industry as a case study, this study presents an interdisciplinary approach to assessing facility level co-benefits at every specific source location in China. We find that co-benefits range from US$51-$278 per ton CO2 reduction nationwide and are highly heterogeneous spatially, with hotspot regions that should be the priority of emissions reduction policies, and that provinces should use different techno-economic strategies to reduce emissions. The location-specific co-benefit value plus a carbon price serves as a unified environmental indicator that enables policy makers to more accurately understand the social costs of electricity generation from coal burning and provides a scientific framework for geographically nuanced policymaking.

Automated summary

Spatially nuanced policies are crucial for maximizing co-benefits of carbon-emissions reduction, as shown in a study focusing on coal-fired power plants. A cost-integrating approach for CO2 and air pollution emissions was presented to better understand the social costs of coal burning in China. Climate policies achieving air quality co-benefits can align developing countries' interests with global climate mitigation.