Inter-provincial electricity transmissions’ co-benefit of national water savings in China

Xiawei Liao, Li Chai*, Yu Jiang, Junping Ji, Xu Zhao

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)

Abstract

Interprovincial electricity transmissions have been utilised in China to overcome the country's imbalanced social-economic development and resource endowments. A bottom-up technology-based model is adopted to estimate water uses in electricity-exporting provinces to produce the transmitted electricity as well as opportunistic water savings in the receiving provinces. The results highlight that, in 2014, on a national scale, electricity transmissions generated co-benefit of saving 20.1 billion m³ of water nationally due to the electric power sector's water productivity differences in the exporting and importing provinces. Taking regional water stresses into account, 10.98 billion m³ of national scarce water saving is realized through electricity transmissions. Moreover, electricity transmissions by China's proposed 12 future transmission lines are expected to use additional 3.22 billion m³ of water in the electricity-exporting provinces. As more water-intensive technologies, e.g. open-loop cooling, are more commonly utilised in the electricity-receiving provinces, a total amount of 16.97 billion m³ of water use will be avoided nationally. Water-use efficiency for power production should be improved in all regions. Transmitted power imports should still be encouraged in water-scarce regions to alleviate their water stresses while power exports should be shifted away from water-stressed regions to water-abundant ones. Energy transformation by utilising gas-fired capacity and hydropower in water-abundant Southern China could be advanced.

Original languageEnglish
Pages (from-to)350-357
JournalJournal of Cleaner Production
Volume229
DOIs
Publication statusPublished - 20 Aug 2019

Keywords

  • Co-benefit
  • Electricity transmission
  • Water conservation
  • Water-energy nexus

Fingerprint Dive into the research topics of 'Inter-provincial electricity transmissions’ co-benefit of national water savings in China'. Together they form a unique fingerprint.

  • Cite this