Impact of occupant behaviour on lighting energy use

Artificial lighting contributes for a large part to the primary energy use of an office building. Lighting control systems can help reduce the lighting energy use. When calculating the potential energy savings, neglecting the occupant behaviour leads to an overestimation. This research shows that the energy saving performance of a daylight dimming system in an individual office decreases by about 10% when user behaviour is accounted for. A parameter analysis shows that this result is fairly independent of boundary conditions.