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Diverse Pathways for Power Sector Decarbonization in Texas Yield Health Cobenefits but Fail to Alleviate Air Pollution Exposure Inequities. | LitMetric

Diverse Pathways for Power Sector Decarbonization in Texas Yield Health Cobenefits but Fail to Alleviate Air Pollution Exposure Inequities.

Environ Sci Technol

Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, North Carolina 27607, United States.

Published: September 2022

AI Article Synopsis

  • * This study analyzes various decarbonization strategies for Texas's power grid, like implementing a carbon tax and shifting from coal to renewable energy sources, showing they can significantly lower CO emissions and health risks, yielding overall net benefits.
  • * Despite these benefits, the research highlights that Black and lower-income communities suffer more air pollution impacts and that current decarbonization efforts do not address this inequality, indicating a need for additional interventions.

Article Abstract

Decarbonizing power systems is a critical component of climate change mitigation, which can have public health cobenefits by reducing air pollution. Many studies have examined strategies to decarbonize power grids and quantified their health cobenefits. However, few of them focus on near-term cobenefits at community levels, while comparing various decarbonization pathways. Here, we use a coupled power system and air quality modeling framework to quantify the costs and benefits of decarbonizing the Texas power grid through a carbon tax; replacing coal with natural gas, solar, or wind; and internalizing human health impacts into operations. Our results show that all decarbonization pathways can result in major reductions in CO emissions and public health impacts from power sector emissions, leading to large net benefits when considering the costs to implement these strategies. Operational changes with existing infrastructure can serve as a transitional strategy during the process of replacing coal with renewable energy, which offers the largest benefits. However, we also find that Black and lower-income populations receive disproportionately higher air pollution damages and that none of the examined decarbonization strategies mitigate this disparity. These findings suggest that additional interventions are necessary to mitigate environmental inequity while decarbonizing power grids.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9494738PMC
http://dx.doi.org/10.1021/acs.est.2c00881DOI Listing

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