After two preparation meetings at KU Leuven (BE, November 2024) and Saxion UAS (NL, April 2025), the ExCo has approved the working phase of IEA-EBC Annex 94: Validation and Verification of In-situ Building Energy Performance Measurement Techniques. We aim for a paradigm shift: from estimates and lookup tables for theoretical building performance, to in-situ measurements of actual building performance.

Five subtasks have been defined to deliver on the aims of the Annex project:

The first Working Meeting of IEA-EBC Annex 94 has taken place at TU Wien (AUT) on 1 – 3 October 2025, where the progress and next steps on the five subtasks were discussed. The next Working Meeting will take place in Paris in the spring of 2026. Visit https://annex94.iea-ebc.org/ for more information.