A comprehensive write-up with several case studies of how daylight can be implemented in office buildings in the tropics. The article shows how daylight systems can be designed to provide the building occupants with a pleasant environment lit by diffuse natural light, which is very different from the typical facades where occupants suffer from glare and overheating. Another important issue addressed by the article is daylight responsive general lighting controls and the benefits of task lighting. Several of the case studies, such as the GEO building, ST Diamond building and the KKR2 building, are reference projects of IEN Consultants. Enjoy the read!