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2026 Vol.20, Issue 1 Preview Page

Research Article

Development of Assessment Indicators for Selecting Public Buildings for Energy Performance Improvement: Derivation of Benchmarks and Explanatory Indicators

공공건축물 에너지 성능개선 대상 선별관리를 위한 지역·용도별 평가지표 기준값 도출

Hye-Gi Kim1
,
Han-Gyeong Chu2
,
Deuk-Woo Kim1*
김 혜기1
,
추 한경2
,
김 덕우1*
1Senior Researcher, Korea Institute of Civil Engineering and Building Technology, Goyang, Korea
2Post Doctoral Researcher, Korea Institute of Civil Engineering and Building Technology, Goyang, Korea
1한국건설기술연구원 건축에너지연구본부 수석연구원
2한국건설기술연구원 건축에너지연구본부 박사후연구원
*Corresponding Author
28 February 2026. pp. 11-28
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Abstract

Current energy evaluation systems for public buildings in Korea rely on simple classification with only 5 climate regions and 6 major building uses, lacking the granularity needed to accurately identify buildings requiring performance improvements. Moreover, existing approaches focus solely on total annual energy consumption without considering seasonal variations or providing diagnostic insights into energy performance causes. This study addresses these limitations by developing a comprehensive dual-indicator system comprising screening indicators for target selection and explanatory indicators for performance diagnosis. Using building registry data and monthly energy consumption data from 2018-2019 for 136,256 public buildings, this study established refined classification criteria considering sub-categories within major building uses. A key innovation is the application of calendarization techniques to align billing periods with calendar months, followed by simplified weather-related energy disaggregation to separate heating, cooling, and base loads. Change Point Models were applied to derive explanatory indicators including heating/cooling sensitivities and change-point temperatures, providing insights into building envelope performance and operational characteristics. The final analysis of 4,395 buildings yielded differentiated benchmarks by building use and region, enabling both effective screening of energy-intensive buildings and diagnosis of underlying performance issues. This dual-indicator approach significantly improves upon existing methods by providing actionable insights for targeted energy retrofit strategies.

Keywords
공공 건축물
에너지 벤치마킹
에너지사용량 평가
변경점 선형회귀모델
건물에너지성능지표
키워드
Public buildings
Energy Benchmarking
Energy Consumption Evaluation
Change Point Model
Building Energy Performance Indicator
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Information
  • Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
  • Publisher(Ko) :한국건축친환경설비학회
  • Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
  • Journal Title(Ko) :한국건축친환경설비학회논문집
  • Volume : 20
  • No :1
  • Pages :11-28
  • Received Date : 2025-12-04
  • Revised Date : 2025-12-30
  • Accepted Date : 2026-01-01
  • DOI :https://doi.org/10.22696/jkiaebs.20260002
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