• Productivity increases by 6 – 16 percent when natural light is added to a workplace.1
• 1 percent productivity increase equals the total energy cost in offices.2
• Pure sunlight is dynamic and has a full spectrum that triggers the
ganglion cells, which controls levels of melatonin and cortisol,
thereby synchronizing the body clock.
• Sunlight gives improved visibility from improved light, better color
rendering, and the absence of flickering from electrical lighting.3
Sources
1,3: L. Edwards, P. Torcellini, (2002), A
Literature Review of the effects of Natural Lighting on Building
Occupants, NREL
2: Journal of Property Management, (January 2000)