Daylighting

Daylighting refers to the theory and applied methods for allowing natural sunlight to enter into interior building spaces. Various day-lighting techniques have been used in architectural design for much of human history. During the 20th century, however, natural day-lighting was replaced by the widespread use of electric fluorescent lighting. Today, as increasing numbers recognize the environmental, economic, and psychological benefits of daylighting, more interior spaces are being lit by the sun. Green building advocates promote day-lighting as an example of an integrative approach to sustainable design. Successful daylighting carefully integrates passive and active design elements for a holistic effect on the whole building. Such a “whole building” approach takes variables like glare, heat gain, seasonal change, cost, paint color, and other elements into account.