IEA EBC Annex 79: Occupant-Centric Building Design and Operation

The IEA EBC Annex 79 aims to provide new insights into comfort-related occupant behaviour in buildings and its impact on building energy performance as well as occupant-centric building design and operation.

Short Description

With the overall goal to integrate and implement occupancy and occupant behaviour into the design process and building operation to improve both energy performance and occupant comfort, Annex 79 focusses on:

  • developing new scientific knowledge about adaptive occupant actions driven by multiple interdependent indoor environmental parameters,
  • understanding interactions between occupants and building systems, e.g. how interfaces encourage or discourage occupants taking advantage of adaptive opportunities for improving their comfort situation, as well as the impact on building energy use,
  • deploying 'big data' (e.g. data mining and machine learning) for the building sector based on various sources of building and occupant data as well as sensing technologies,
  • developing methods and guidelines and preparing standards for integrating occupant models in building design and operation, and
  • performing focused case studies to test the new methods and models in different design and operation phases in order to obtain valuable feedback for the researchers, practitioners, and policy makers.

The IEA EBC Annex 79 is organised in four subtasks (see Figure 2). Professor Ardeshir Mahdavi from TU Wien is the co-leader Subtask 1. This Subtask focuses on multi-aspect environmental exposure, building interfaces, and human behaviour.


Australia, Austria, Brazil, Canada, China, Denmark, Germany, India, Italy, Japan, Netherlands, New Zealand, Norway, Poland, Sweden, Switzerland, United Arab Emirates, United Kingdom, United States of America

Contact Address

Professor A. Mahdavi
Karlsplatz 13
A-1040 Wien