THE IMPACT OF POWER-SAVING MEASURES ON OFFICE LIGHTING IN 2011

The purpose of this study is to reconsider the optimal lighting conditions in office buildings with respect to both the occupants' visual comfort and reduced energy use. This paper reports on how the lighting in office buildings in Japan changed after the events that followed the Great East Japan Earthquake in March 2011. For the first step, a survey of facility managers in office buildings was conducted nationwide. The survey focused on specific measures taken to reduce power consumption. Additionally, the occupants of each office building filled out a questionnaire about the lighting conditions in their working areas.