Analysis of the necessity of revising the building energy efficiency certificate for non-residential buildings in South Korea

The Building Energy Efficiency Certification (BEEC) program is a crucial government policy aimed at reducing building energy consumption and greenhouse gas emissions in numerous countries, including South Korea. This study aims to evaluate the achievable BEEC level by designing a typical building with a construction permit and analyze the appropriateness of the awarded BEEC level. We collected 327 samples of non-residential buildings from South Korea's architectural administration system and established reference building models from these samples. The buildings were categorized into four use types (office, educational, retail, or cultural) and large or small sizes. We evaluated the energy consumption of the reference buildings and assigned them a BEEC level. Retail buildings exhibited the highest energy consumption, followed by office, cultural, and educational buildings. All reference buildings had an energy consumption of less than 260 kWh/m2/yr and were awarded a BEEC level of 1 to 1++, indicating energy efficient buildings. Non-residential buildings, reflecting common design trends, achieved a BEEC level of at least level 1 without additional efforts to enhance energy efficiency. We recommend the South Korean government should revise the current BEEC rating criteria and review the certification evaluation methodology. The results of this study strongly advocate for continuous improvement of the BEEC certification system. This study is expected to enhance the effectiveness of energy efficiency policies for buildings and advance related policies.