Sun Sook Kim

1. Introduction Reducing energy consumption and improving energy efficiency are key factors for addressing climate change worldwide. The building sector plays a crucial role, accounting for 35% of global energy consumption and 38% of Greenhouse Gas (GHG) emissions [1]. In this context, retrofitting existing buildings for energy efficiency represents an effective measure for reducing GHG emissions because existing buildings far outnumber new constructions [2,3].

4.2. Applying the Energy Performance Assessment Method for the General Hospital The EPIs derived in were compared using the energy performance assessment method. Figure 6 shows the results of comparing the EER score and the EUI. Overall, the score decreased as the EUI increased. B04, B17, and B15 are buildings that correspond to area B, and are evaluated to be inefficient buildings for EUI, but efficient buildings for the score.

1. Introduction With growing interest in reducing energy consumption and greenhouse gas emissions in the building sector worldwide, energy performance assessments have become increasingly relevant for improving and continuously maintaining building energy efficiency. To improve the energy performance of new and existing buildings, many countries have implemented various policies to limit physical features or to assess and manage energy performance.