Building information modelling based energy performance assessment system: An assessment of the energy performance index in Korea

Purpose - The purpose of this study is to identify an objective energy performance assessment method in Korea, and to build a building information modelling (BIM) based system that can assess the energy performance of buildings. Design/methodology/approach - The energy performance assessment methods currently used in Korea were first identified via a literature review. A system was then implemented to solve the problem of objectivity. The system was implemented through a data-based building information model, instead of the existing method of documented two-dimensional (2D) CAD. In addition, Revit Architecture (a BIM tool), MS Access, and Visual Basic (VB) were used to implement the system. To verify the system's efficiency, it was compared to the existing method by applying both to an actual case (a school facility). Findings - This study found that the issue of subjectivity in the Korean energy performance assessment method may be resolved with a data-based BIM. Originality/value - This study presented the BIM-EPAS to reduce errors and the time needed to conduct an energy performance assessment. In order to follow a realistic approach, the BIM-EPAS was applied to an actual assessment case, thereby verifying the system's applicability.