The Gap Between Certified and Actual Building Energy Efficiency: ZEB Data and Pathways to Closing It
At the KOSATA seminar (November 2026), experts presented data from a South Korean ZEB-Plus building DY: certified energy autonomy of 129.9% versus an actual 56.8% across all loads. The phased introduction of a total building energy cap system was also discussed, with speakers noting a lack of standardized metrics and operational data for regulatory application.
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