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Hydrogen blending into natural gas networks: global practices, infrastructure compatibility, and end-user implications

Author

Listed:
  • Zhou, Lingfeng
  • Liu, Jing
  • Chen, Dihao
  • Huang, Chengpeng
  • Fu, Shaohua
  • Wang, Yanshun
  • Wang, Junsen
  • Wang, Jianbo
  • Cheng, Y. Frank

Abstract

Hydrogen blending into existing natural gas networks presents a promising near-term strategy for decarbonizing the gas sector while capitalizing on established infrastructure. However, the distinct physical and chemical properties of hydrogen introduce significant challenges in material compatibility, combustion stability, and regulatory compliance. This review systematically examines global hydrogen blending projects and policies, analyzes the mechanical and fracture behavior of steel transmission pipelines under hydrogen exposure, evaluates the performance and permeability of plastic materials used in distribution networks and investigates the impact of hydrogen blending on flame stability in both domestic and industrial appliances. By consolidating the latest findings and demonstration data, this review provides a comprehensive understanding of the technical limitations and operational risks associated with hydrogen-enriched natural gas systems. Furthermore, key knowledge gaps are identified, and targeted recommendations are proposed to guide the future deployment of hydrogen-enriched natural gas networks.

Suggested Citation

  • Zhou, Lingfeng & Liu, Jing & Chen, Dihao & Huang, Chengpeng & Fu, Shaohua & Wang, Yanshun & Wang, Junsen & Wang, Jianbo & Cheng, Y. Frank, 2026. "Hydrogen blending into natural gas networks: global practices, infrastructure compatibility, and end-user implications," Applied Energy, Elsevier, vol. 402(PC).
    • Handle: RePEc:eee:appene:v:402:y:2026:i:pc:s0306261925017878
    DOI: 10.1016/j.apenergy.2025.127057
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