This project focuses on how established visual and non-visual (circadian) lighting targets can be achieved with minimal energy use and environmental impact by combining daylight and electric lighting.

We test different integrative daylighting schemes in a laboratory, collecting subjective responses and objective data on visual performance and circadian-related metrics. The most promising schemes are then combined with electric lighting, and we evaluate them using advanced simulations to estimate building energy use and environmental impact through life-cycle analysis (LCA).

The results will inform low-carbon, health-oriented building design and contribute to international work within IEA EBC Annex 90, Low Carbon, High Comfort Integrated Lighting.

The project is co-financed by Lund University via funding provided by the Bertil och Britt Svenssons Stiftelsen för Belysningsteknik.