Daylighting

It is well known that light has profound effects on humans. New research shows a direct link between daylighting and increased learning in students.

In a 1999 study , the Heschong Mahone Group found a statistically compelling connection between daylighting and student performance. It isolates daylighting as an illumination source, and separates illumination effects from other qualities associated with daylighting from windows.

These benefits could be caused by a variety of effects including: increased visibility, improved student health, elevated mood, better behavior, reduction in the effects of daylight deprivation, and higher arousal levels. Around half of a school utility bill in California pays for lighting. Because of this, lighting systems are often identified as a priority in energy-conserving measures and programs.

Daylighting saves energy, and therefore money, in two ways. Most obviously, lights that are off are not using energy. But lights that are off are also not generating heat, allowing the air conditioners to be downsized, work less, and save energy.

As straightforward as these advantages appear, they do not just happen. The design team must work together using the principles of integrated design to maximize the effectiveness of daylighting systems, and the building occupants need to be educated about how the systems work. Your lighting options range from no-cost and low-cost choices to sophisticated state-of-the-art systems. Communicate your goals clearly with your design team, and arrive at a solution that fits your budget.

For more detailed information and best practice design strategies, see the Daylighting Chapter in Part II of the BPM Volume II: Design.