The building energy efficiency certificate (BEEC) is considered an important tool for saving energy in buildings and for reducing greenhouse gas (GHG) emissions in South Korea. To evaluate its effects, data on the site energy use intensity (EUI) of 2,660,159 certified and non-certified apartment units were collected from the Korea National Building Energy Database and compared. The site EUIs for total energy use of the certified apartment units with BEEC levels 1+ and 1 were 1.4–20.2% lower than those of the non-certified apartment units. Particularly, the gas use (for heating) intensity was 3.5–26.4% lower compared to that of the non-certified apartment. However, the electricity use intensity has not decreased despite BEEC because it does not consider the electricity consumption by appliances. In addition, the EUI of the certified apartment units with BEEC level 2 was higher than that of the non-certified apartment units in Group B. These show that the BEEC level 1 or higher contributed to reducing heating energy although its effect was different by climatic regions and the size of apartment units, but its effect on the electricity use intensity was insignificant. It shows that BEEC needs to be improved and some policies are needed to make residential building occupants more aware of the need for them to reduce their electricity consumption and to encourage them to do so.

建筑能效证书 (BEEC) 被认为是韩国建筑节能和减少温室气体 (GHG) 排放的重要工具。为了评估其效果，从韩国国家建筑能源数据库收集了 2,660,159 个认证和非认证公寓单元的场地能源使用强度 (EUI) 数据并进行了比较。BEEC 等级 1+ 和 1 的认证公寓单元的总能源使用现场 EUI 比非认证公寓单元低 1.4-20.2%。特别是，与非认证公寓相比，燃气使用（供暖）强度降低了 3.5-26.4%。然而，尽管有BEEC，用电强度并没有下降，因为它没有考虑电器的用电量。此外，BEEC 2 级认证公寓单元的 EUI 高于 B 组非认证公寓单元的 EUI。这表明 BEEC 1 级或更高级别有助于减少热能，尽管其效果因气候区域和环境而异。户型大小，但对用电强度影响不显着。这表明 BEEC 需要改进，需要采取一些政策来让住宅楼住户更加意识到他们需要减少电力消耗并鼓励他们这样做。但对用电强度影响不大。这表明 BEEC 需要改进，需要采取一些政策来让住宅楼住户更加意识到他们需要减少电力消耗并鼓励他们这样做。但对用电强度影响不大。这表明 BEEC 需要改进，需要采取一些政策来让住宅楼住户更加意识到他们需要减少电力消耗并鼓励他们这样做。