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<p>This study was conducted to provide foundational data for establishing mobile charging station (MCS) infrastructure that can facilitate the large-scale development and mass production of electric construction machinery at construction sites. For this purpose, the battery capacity, operating time, and charging duration of mass-produced electric construction machinery were comparatively analyzed to identify design trends and operational requirements. As the next step, the energy consumption characteristics were quantitatively evaluated using actual engine data obtained from a 30-ton excavator commonly employed at large construction sites. The analysis revealed that battery capacity tends to increase exponentially with platform size, and charging time is generally optimized according to site-specific operational characteristics. Furthermore, based on an average daily operation of eight hours, energy consumption varied substantially depending on task type and load intensity. Notably, on days dominated by high-load excavation work, total daily energy consumption exceeded 700 kWh. In contrast, while most full-day operations resulted in energy consumption above 300 kWh, a lower value of 190.9 kWh was observed during reduced working time, despite a high operating ratio. These findings suggest that MCS infrastructure planning must transition from traditional work-hour-based demand estimation to a model that incorporates both daily working duration and task-specific energy intensity.</p>

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Assessment of Construction Machinery Energy Consumption for Mobile Charging Infrastructure on Construction Sites

  • 期刊论文

  • 发表日期：

    2026年7月6日

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  • Dalho Shin,
  • Myunggeun Park,
  • Kyoungbin Lee,
  • Suhan Park,
  • Heesu Kim

摘要

This study was conducted to provide foundational data for establishing mobile charging station (MCS) infrastructure that can facilitate the large-scale development and mass production of electric construction machinery at construction sites. For this purpose, the battery capacity, operating time, and charging duration of mass-produced electric construction machinery were comparatively analyzed to identify design trends and operational requirements. As the next step, the energy consumption characteristics were quantitatively evaluated using actual engine data obtained from a 30-ton excavator commonly employed at large construction sites. The analysis revealed that battery capacity tends to increase exponentially with platform size, and charging time is generally optimized according to site-specific operational characteristics. Furthermore, based on an average daily operation of eight hours, energy consumption varied substantially depending on task type and load intensity. Notably, on days dominated by high-load excavation work, total daily energy consumption exceeded 700 kWh. In contrast, while most full-day operations resulted in energy consumption above 300 kWh, a lower value of 190.9 kWh was observed during reduced working time, despite a high operating ratio. These findings suggest that MCS infrastructure planning must transition from traditional work-hour-based demand estimation to a model that incorporates both daily working duration and task-specific energy intensity.