Daylighting simply means the use of natural sun light to brighten up internal areas of a building. The use of daylight contributes significantly to the reduction of electricity by eliminating the need for artificial lights during the day.
The design for daylighting must be implemented in early stages of the construction of a building as it is a passive aspect of a building and is difficult to change in the later stages of construction. However, careful considerations in daylighting design has to be made to minimize the heat gain and glare issues.
Various measures can be used to reduce incoming glare via the diffusion of light rays entering a building. Common areas such as staircases, lift lobbies and corridors can exploit daylighting to reduce or even eliminate electricity consumption.