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Assessment of the potential of salt mines for renewable energy peaking in China

Author

Listed:
  • Bai, Weizheng
  • Shi, Xilin
  • Yang, Chunhe
  • Zhu, Shijie
  • Wei, Xinxing
  • Li, Yinping
  • Liu, Xin

Abstract

Renewable energy sources, such as wind and solar, can reduce environmental pollution and promote the transformation of the energy structure. However, the intermittency and uncertainty of new energy sources such as wind and photovoltaics pose challenges to large-scale grid integration. Effective utilization of intermittent energy sources requires large-scale energy storage facilities. Salt rock is recognized as an excellent medium for underground large-scale energy storage with a wide range of applications. This paper identifies the potential of salt caverns to be used for large-scale energy storage by analyzing the distribution of wind and solar energy resources in China, taking into account the grid-connected infrastructure of the Chinese power grid and the geographic location of salt mines. The overlapping areas are identified for utilization in compressed air energy storage and hydrogen storage. Through meticulous categorization and analysis of the factors influencing salt cavern underground storage site selection, the AHP-EWM method is introduced to establish an objective hierarchy model for a comprehensive evaluation system of salt cavern underground storage site selection. The comprehensive planning of China's 20 major salt mines is conducted, and the research findings hold significant reference value for facilitating the low-carbon energy transition in China.

Suggested Citation

  • Bai, Weizheng & Shi, Xilin & Yang, Chunhe & Zhu, Shijie & Wei, Xinxing & Li, Yinping & Liu, Xin, 2024. "Assessment of the potential of salt mines for renewable energy peaking in China," Energy, Elsevier, vol. 300(C).
    • Handle: RePEc:eee:energy:v:300:y:2024:i:c:s0360544224013501
    DOI: 10.1016/j.energy.2024.131577
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