| Keywords |
Building energy performance; Green Button; Real-time energy monitoring; Public sector energy data; Operational Rating |
| Abstract |
The building sector accounts for 40% of global energy consumption, with performance gaps exceeding 200% between design expectations and actual operation. This study proposes an operational rating framework, leveraging Korea’s Public Sector Green Button system to address this gap. Through a systematic analysis of five international systems (the US, Australia, Singapore, the EU, and Japan) across data collection, algorithms, and institutional dimensions, we conclude that Korea’s AMI-based hourly data demonstrates leading capability requiring phased implementation. We propose starting with Singapore’s EUI-based approach, transitioning to US statistical models, while adopting Australia’s verification and the EU’s market mechanisms. Policy recommendations include: (1) standardizing data with quality control requirements; (2) implementing a phased methodology from EUI to regression models; (3) providing comprehensive support through assessor training and online platforms; (4) integrating the system with ZEB certification, green remodeling, and public sector ESG evaluation. This research provides an international framework for leveraging real-time energy data and presents empirical ESG policies for achieving carbon neutrality in public buildings by 2050. |