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<p>This study quantitatively investigates the impact of different operational models on the energy efficiency of two types of on-site hydrogen refueling stations (HRS). Based on 71 weeks of empirical data, this research compares the operational characteristics, hydrogen supply volumes, and power consumption of an Urban Dedicated Station (serving fixed demand) and a Mother Station. Specific Energy Consumption (SEC) was employed as the Key Performance Indicator (KPI) to evaluate energy efficiency. The analysis reveals the operational model to be a critical determinant of HRS energy efficiency. The Urban Dedicated Station, characterized by stable demand and continuous operation, exhibited a strong correlation (R<sup>2</sup> = 0.84) between hydrogen production and power consumption. This resulted in a low and stable SEC, consistently in the 6–8 kWh/kg range. Conversely, the Mother Station’s intermittent operation led to substantial standby power consumption, resulting in a weak correlation (R<sup>2</sup> = 0.23) and a highly volatile SEC, that peaked at 21.3 kWh/kg.</p>

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Energy Efficiency of On-site Hydrogen Refueling Stations in a Comparative Study of Urban and Mother Station Models Based on Empirical Operational Data

  • 期刊论文

  • 发表日期：

    2025年12月23日

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  • Daewoong Jung,
  • Jongyeon Oh,
  • Gi Hoon Hong,
  • Kyuhwan Hyun

摘要

This study quantitatively investigates the impact of different operational models on the energy efficiency of two types of on-site hydrogen refueling stations (HRS). Based on 71 weeks of empirical data, this research compares the operational characteristics, hydrogen supply volumes, and power consumption of an Urban Dedicated Station (serving fixed demand) and a Mother Station. Specific Energy Consumption (SEC) was employed as the Key Performance Indicator (KPI) to evaluate energy efficiency. The analysis reveals the operational model to be a critical determinant of HRS energy efficiency. The Urban Dedicated Station, characterized by stable demand and continuous operation, exhibited a strong correlation (R2 = 0.84) between hydrogen production and power consumption. This resulted in a low and stable SEC, consistently in the 6–8 kWh/kg range. Conversely, the Mother Station’s intermittent operation led to substantial standby power consumption, resulting in a weak correlation (R2 = 0.23) and a highly volatile SEC, that peaked at 21.3 kWh/kg.