| Title |
Improving the Operational Stage of Zero Energy Building Certification System Using an Energy Self-Consumption Ratio Metric |
| Authors |
권순범(Kwon, Soon-Bum) ; 박관용(Park, Gwan-Yong) ; 박덕준(Park, Duk-Joon) |
| DOI |
https://doi.org/10.5659/JAIK.2026.42.2.217 |
| Keywords |
Zero Energy Building; Energy Independence Ratio; Energy Self-consumption Ratio; Certification System |
| Abstract |
To address grid instability associated with the current Energy Independence Ratio (EIR)-centric ZEB certification, this study introduces the
Energy Self-Consumption Ratio (SCR) as a complementary metric. Using operational data from a laboratory building, SCR variations were
examined across photovoltaic (PV) capacity scenarios designed to meet different EIR targets. The results show a clear inverse relationship:
higher EIR levels lead to sharply increased surplus power and reduced SCR. This indicates that focusing solely on higher EIR grades can
unintentionally increase the grid burden. To mitigate this issue, the study proposes a new ZESC Grade system that rewards buildings
achieving high SCR, supplementing the existing EIR-based criteria. |