| Title |
Energy Use Intensity Trends by Institution Type in Korean Public Buildings Using Korean Green Button Data |
| Authors |
김세헌(Kim, Seheon) ; 이종원(Lee, Jong-Won) |
| DOI |
https://doi.org/10.5659/JAIK.2026.42.7.271 |
| Keywords |
Energy Use Intensity (EUI); Public Buildings; Korean Green Button; ANOVA; Building Energy Benchmarking |
| Abstract |
The building sector accounts for a significant share of energy consumption and greenhouse gas emissions. As policies increasingly aim to
reduce energy use, clear classification of building groups becomes essential, providing a basis for comparing performance and guiding energy
policy decisions. To examine how institution type influences energy consumption trends, this study analyzes the Energy Use Intensity (EUI)
of 410 public buildings in South Korea using data from the Korean Green Button system. Data were collected through web crawling and
subsequently preprocessed. Statistical methods for variance analysis were applied in three stages: pre-analysis testing, analysis of variance, and
post-hoc analysis. Because the data did not meet assumptions of normality and homogeneity of variance, the non-parametric Kruskal-Wallis
test and Bonferroni-corrected pairwise comparisons were used to determine whether EUI differs significantly by institution type. Results show
that institution type with H = 100.669, p < 0.001, is significantly associated with EUI. Provincial and city Offices of Education recorded the
highest mean EUI at 184.72 kWh/m², followed by basic unit local governments at 154.16 kWh/m², while local public corporations or agency
buildings showed the lowest at 79.04 kWh/m². These findings provide evidence-based insight for targeted energy efficiency policies in the
public sector and suggest the need for differentiated benchmarks based on institutional characteristics. |