| Issue |
E3S Web Conf.
Volume 716, 2026
The 12th International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings (IAQVEC 2026)
|
|
|---|---|---|
| Article Number | 10006 | |
| Number of page(s) | 5 | |
| Section | Climate Change Adaptation, Resilience, and Environmental Policy | |
| DOI | https://doi.org/10.1051/e3sconf/202671610006 | |
| Published online | 09 June 2026 | |
Building Energy Performance Evaluation of Public Institutions Using the Korean Green Button System
1 Department of Management of Technology, Sungkyunkwan University, Suwon, Korea
2 Department of Architecture, Keimyung University, Daegu, Korea
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract
This study presents the first academic analysis of Korean Green Button data, examining electricity consumption of 422 public institutions over 36 months (2022-2024). The methodology integrates EUI-based national grading for absolute performance assessment and K-means clustering for relative evaluation within the public sector portfolio. Results reveal a significant divergence: while 82.2% achieved Grade B or above under national standards, K-means clustering identified 14.9% as "needs improvement" relative to peers—with mean EUI 6.4 times higher than high-efficiency institutions. Government building management agencies demonstrated superior performance (46.2% high-efficiency), while basic local governments showed the weakest profile (25.0% needs improvement). This study demonstrates that comprehensive public sector benchmarking requires both absolute standards for regulatory compliance and relative assessment for continuous improvement targeting.
Key words: Green Button / building energy benchmarking / Public institutions / K-means clustering
© The Authors, published by EDP Sciences, 2026
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