Journal of the Korean Solar Energy Society ISSN:1598-6411(Print) 2508-3562(Online) 한국태양에너지학회 논문집

Although building energy analysis tools, such as ECO2, are essential for architects and building engineers for energy performance analysis, these tools do not consider various load patterns, including plug loads, for determining the certification level for domestic zero energy. However, in reality, various load patterns can occur, and significant plug loads can be used in buildings. Therefore, in this study, we conducted a detailed analysis of the annual energy consumption of 60 households based on their end-use energy consumption to capture various demand trends in a low-density, multi-family housing complex. While all residential buildings in the complex were of the same size, they showed different occupancy patterns. Based on the actual measurement data, the energy consumed by each energy component through activities such as heating, cooling, hot water supply, ventilation, lighting, and plug load, was analyzed in detail, and three representative load patterns were investigated by calculating the maximum, heavy, and light loads. Furthermore, the estimated energy independence rate was calculated based on the existence of the plug loads of the three representative load patterns.