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Air quality and climate benefits of long-distance electricity transmission in China

Author(s): Peng, Wei; Yuan, Jiahai; Zhao, Yu; Lin, Meiyun; Zhang, Qiang; et al

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Abstract: China is the world's top carbon emitter and suffers from severe air pollution. It has recently made commitments to improve air quality and to peak its CO2 emissions by 2030. We examine one strategy that can potentially address both issues-utilizing long-distance electricity transmission to bring renewable power to the polluted eastern provinces. Based on an integrated assessment using state-of-the-science atmospheric modeling and recent epidemiological evidence, we find that transmitting a hybrid of renewable (60%) and coal power (40%) (Hybrid-by-wire) reduces 16% more national air-pollution-associated deaths and decreases three times more carbon emissions than transmitting only coal-based electricity. Moreover, although we find that transmitting coal power (Coal-by-Wire, CbW) is slightly more effective at reducing air pollution impacts than replacing old coal power plants with newer cleaner ones in the east (Coal-by-Rail, CbR) (CbW achieves a 6% greater reduction in national total air-pollution-related mortalities than CbR), both coal scenarios have approximately the same carbon emissions. We thus demonstrate that coordinating transmission planning with renewable energy deployment is critical to maximize both local air quality benefits and global climate benefits.
Publication Date: 1-Jun-2017
Electronic Publication Date: 12-Jun-2017
Citation: Peng, Wei, Yuan, Jiahai, Zhao, Yu, Lin, Meiyun, Zhang, Qiang, Victor, David G, Mauzerall, Denise L. (2017). Air quality and climate benefits of long-distance electricity transmission in China. Environmental Research Letters, 12 (6), 064012 - 064012. doi:10.1088/1748-9326/aa67ba
DOI: doi:10.1088/1748-9326/aa67ba
EISSN: 1748-9326
Pages: 064012 - 064012
Type of Material: Journal Article
Journal/Proceeding Title: Environmental Research Letters
Version: Final published version. This is an open access article.

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