Evaluation Analysis of Building Energy Efficiency Rating for Apartment Complexes

Ji Hyeon Kim; Hyun Sic Choi; U Cheul Shin

doi:10.7836/kses.2025.45.6.133

All Issue

2025 Vol.45, Issue 6 Preview Page Next Page

Research Article

Evaluation Analysis of Building Energy Efficiency Rating for Apartment Complexes 공동주택 건축물 에너지효율등급 분석평가

30 December 2025. pp. 133-148

PDF XML

Abstract

This study examined the factors contributing to variations in building energy efficiency ratings among apartment complexes constructed under identical insulation standards and climatic conditions. A total of 88 apartment complexes located in Seoul and Gyeonggi Provinces were analyzed using preliminary certification data from the ECO2 program, including site energy demand, site energy consumption, and source energy consumption. To evaluate the statistical significance of differences between certification grades, Welch’s analysis of variance (Welch’s ANOVA) was applied, while considering potential violations of the assumptions of normality and homogeneity of variance. Results indicated that while site energy demand was generally consistent across certification grades, site heating energy consumption exhibited statistically significant differences—particularly in complexes employing individual heating systems, which demonstrated lower system efficiency. In addition, differences in the installed capacity of solar photovoltaic systems were found to partially explain variations in the overall energy efficiency ratings. These findings suggest that the heating system efficiency and integration of renewable energy technologies are key determinants of building energy performance ratings and provide a valuable basis for future energy policy and planning.

Keywords

Apartment complex

Building energy efficiency rating

District heating system

Individual heating system

키워드

공동주택

건축물에너지효율등급

지역난방

개별난방

References

Park, S. W., A Study on Changes of the Energy Efficiency Rating according to the Revised Building Energy Efficiency Rating Certification System, Master’s thesis, Hanyang University, 2013.

Jang, Y. H., Kim, J. G., Kim, J. H., Jeong, H. G., Hong, W. H., and Jang, C. Y., Comparison Analysis of Building’s Heating Energy Consumption in the Apartment Complex (Focused on Apartment in Daejeon), Journal of Korea Institute of Ecological Architecture and Environment, Vol. 15, No. 3, pp. 37-42, 2015.

10.12813/kieae.2015.15.3.037

Lee, D. H., Kim, T. Y., Seok, J. H., and Byun, S. Y., Analysis of Energy Performance of Multi-Unit Dwelling by Household Plan Using the Building Energy Efficiency Rating Program, Journal of Korea Institute of Architectural Sustainable Environment and Building Systems, Vol. 15, No. 2, pp. 200-212, 2021.

Kim, H. J. and Seo, D. H., Improving Building Energy Efficiency Rating Criteria for Residential Building, Journal of the Architectural Institute of Korea, Vol. 38, No. 12, pp. 283-288, 2022.

10.5659/JAIK.2022.38.12.283

Kim, M. K., Park, H. S., and Song, K. D., Evaluation and Analysis of Building Energy Rating System According to Insulation Performance of Building Envelope in Regional and Building Form of Apartment House, Journal of Air-Conditioning and Refrigeration Engineering, Vol. 25, No. 2, pp. 49-54, 2013.

10.6110/KJACR.2013.25.2.049

Jun, H. D. and Park, C. Y., An Analysis on the Changes and Impacts of Design Variables on Building Energy Efficiency Rating, Proceedings of the Architectural Institute of Korea, Vol. 36, No. 2, pp. 672-673, 2016.

Cho, Y. U., Park, S. H., and Joung, K. S., A Study on the Building Energy Efficiency Rating Changes by Enhanced Thermal Insulation Performance of Building Envelope Standards in Apartment Houses, Journal of Air-Conditioning and Refrigeration Engineering, Vol. 29, No. 2, pp. 89-95, 2016.

Information

Publisher :Korean Solar Energy Society
Publisher(Ko) :한국태양에너지학회
Journal Title :Journal of the Korean Solar Energy Society
Journal Title(Ko) :한국태양에너지학회 논문집
Volume : 45
No :6
Pages :133-148
Received Date : 2025-10-29
Revised Date : 2025-12-11
Accepted Date : 2025-12-21
DOI :https://doi.org/10.7836/kses.2025.45.6.133

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

All Issue