Abstract
China has built the world’s largest power transmission infrastructure by consuming massive volumes of greenhouse gas- (GHG-) intensive products such as steel. A quantitative analysis of the carbon implications of expanding the transmission infrastructure would shed light on the trade-offs among three connected dimensions of sustainable development, namely, climate change mitigation, energy access and infrastructure development. By collecting a high-resolution inventory, we developed an assessment framework of, and analysed, the GHG emissions caused by China’s power transmission infrastructure construction during 1990–2017. We show that cumulative embodied GHG emissions have dramatically increased by more than 7.3 times those in 1990, reaching 0.89 GtCO2-equivalent in 2017. Over the same period, the gaps between the well-developed eastern and less-developed western regions in China have gradually narrowed. Voltage class, transmission-line length and terrain were important factors that influenced embodied GHG emissions. We discuss measures for the mitigation of GHG emissions from power transmission development that can inform global low-carbon infrastructure transitions.
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Data availability
All the GHG emission inventories of power transmission projects and China’s 31 provincial regions’ power transmission systems from 1990 to 2017 are listed in Supplementary Tables 5–18. All our data are available to readers and can be freely downloaded from the CEADs website (https://www.ceads.net/data/process/). Source data are provided with this paper.
Code availability
The code for uncertainty analysis can be accessed via our recent work published in Scientific Data (https://doi.org/10.1038/s41597-020-00662-4) or at https://www.ceads.net/data/process/.
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Acknowledgements
W.W. was supported by the National Key R&D Program of China (2019YFC1908501), the National Natural Science Foundation of China (72088101, 71904125 and 71690241) and the Shanghai Sailing Program (18YF1417500). J.L. was supported by the National Natural Science Foundation of China (72074137 and 71961137010) and the Taishan Scholars Program. D.G. was supported by the National Natural Science Foundation of China (41921005 and 91846301). H.Q. was supported by the National Natural Science Foundation of China (71703027). K.F. was supported by the Taishan Scholars Program and the Shandong University Interdisciplinary Research and Innovation Team of Young Scholars. N.Z. was supported by the National Natural Science Foundation of China (72033005).
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W.W., J.L., D.G. and N.Z. conceived the study. H.Q. and K.F. provided the data. W.W., J.L., B.C., M.W. and P.Z. performed the analysis. All authors interpreted the data. W.W. and J.L. prepared the manuscript. All authors revised the manuscript.
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Peer review information Nature Sustainability thanks Maxime Agez, Daniel Müller and the other, anonymous, reviewer(s) for their contribution to the peer review of this work.
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Supplementary Fig. 1, Studies 1 and 2, and Methods.
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Supplementary Tables 1–23.
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Wei, W., Li, J., Chen, B. et al. Embodied greenhouse gas emissions from building China’s large-scale power transmission infrastructure. Nat Sustain 4, 739–747 (2021). https://doi.org/10.1038/s41893-021-00704-8
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DOI: https://doi.org/10.1038/s41893-021-00704-8
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