To achieve the reduction target of GHG emission from the building sector, the government introduced the Zero Energy Building certification system in 2017 according to the Green Building Promotion Act, and established the roadmap for the expansion of the obligation to private buildings in 2025. With the expansion of obligatory buildings, it is necessary to find the affecting factors for certification and data about quantified performance levels. However, in the early times of the system, there were not many certified buildings. Therefore, this study tried to analyze the performance levels of the educational research facilities which had more than grade 1 in the latest 2 years in Building Energy Efficiency Rating as one of Zero Energy Building certification standards, and to suggest the influencing factors on zero energy building design and quantified performance levels. In a statistical analysis method, this study determined the affecting factors on energy requirement, and analyzed the actually certified buildings in order to find grade-based performance levels of the certified in building energy efficiency rating.
<br>According to the multiple regression analysis on the affecting factors on design, a coefficient of determination was 0.778 which was significant. Regarding most influencing factors on design, the higher grade, the better performance.
