Lighting is one of the biggest consumers of energy in any building; in particular data centres! Diffusing natural light indoors is a new and innovative way of reducing electricity whilst diffusing the highest quality of daylight, straight from the sun! Due to the high sensitivity linked to data centre security, building windows is not an option, however because of this data centres consume large amounts of electricity during the day which could be drastically reduced with daylighting technologies.

http://www.echy.fr/natural-light-and-data-centres/?lang=en