EBC Annex 77 / SHC Task 61 Integrated Solutions for Daylight and Electric Lighting

Completed (2018 - 2021)


This project focused on R&D to create and develop strategies combining daylighting and appropriate lighting control systems, leading both to:

  • very highly energy-efficient lighting schemes, and
  • solutions offering the best lighting conditions for people.

Useful knowledge and results from research was gathered concerning the perceptions of building occupants on lighting quality, user interfaces and control strategies. The project proposed models for lighting controls that integrate occupant behaviour and expectations. It identified best practice approaches for control solutions for lighting and daylighting (movable components of windows), with wireless and wired controls, open loop and closed loop, Internet of Things, etc). It also conducted onsite and laboratory monitoring of innovative solutions and published the findings to document their benefits. Part of the work led to deliverables to inform standardization proposals, particularly in relation to CEN and ISO.

Project Objectives

  • Review the relationships between occupant perspectives and energy in the emerging era of ‘smart and connected lighting’ for a sample of buildings. Consolidate findings and create ‘personas’ reflecting the behaviours of typical occupants.
  • Based on a review of specifications concerning lighting quality, non-visual effects, ease of design, installation and use, provide recommendations for energy regulations and building performance certificates.
  • Assess and improve the technical, environmental and financial robustness of integrated daylight and electric lighting approaches.
  • Demonstrate and verify concepts through laboratory studies and real use cases based on performance validation protocols. 
  • Develop integral photometric, occupant comfort and energy rating models as pre-normative work linked to relevant bodies, including CIE, CEN, ISO, and initiate standardization activities.
  • Provide decision making and design guidelines incorporating virtual reality sessions. Integrate approaches into widespread lighting design software


The following deliverables were produced:

  • ‘Personas for occupant-centered integrated lighting solutions’ report
  • ‘Integration and optimization of daylight and electric lighting’ report / source book
  • ‘Guidelines for the use of simulation in the design process of integrated lighting solutions’ report –– ‘Integrated solutions for daylighting and electric lighting in practice: results from case studies’ report
  • Standardization: Initiation of new work items by appropriate standardization bodies and proposals for methods for draft standards (BSDF daylight system characterization, hourly lighting energy demand rating method)
  • Virtual Reality Decision Guide
  • A Web-based tool providing an hourly lighting energy demand rating method
  • Industry workshops during the project duration, in conjunction with every project meeting, which will be organised in the host country of each meeting, and to which representatives from authorities, manufacturers and designers will also be involved

Operating Agent

Dr. Jan de Boer
Fraunhofer Institute of Building Physics
Nobelstr. 12
D-7056 Stuttgart
Tel: +49 711 / 970-3401
Fax: +49 711 / 970-3399


Australia, Austria, Belgium, P.R. China, Denmark, Germany, Italy, Japan, the Netherlands, Norway, Slovakia, Sweden, Singapore, Switzerland, USA; Observer: Brazil