Daylighting Systems for the Public Sector

When the public good is the priority, it is important to reduce overhead costs so more resources can be spent on the larger community. About 40% of energy consumption in commercial buildings is used for electric lighting, and about one-fifth of all energy produced globally powers electrical lighting. Proper daylighting can drastically reduce our dependence on electricity both by allowing building occupants to turn electric lights off during the day and by minimizing heat gain and heat loss. As a result, proper daylighting reduces energy usage and the associated costs between a total of 50-80%.


Natural light has been proven to enhance the moods of people inside of a building. After the Center for Energy and Environmental Education incorporated daylighting into its building design, the center director noted that visitors who come into the facility find the building “very refreshing” and often want to stay. One study has shown that in workers who moved into a daylit facility, workplace satisfaction increased by 17% and a "sense of being in good spirits while at work" rose by 20%.

Plus, a more pleasant and positive environment leads to more productive work. When Lockheed Martin moved several offices over to a daylit building, executives highlighted the productivity and savings: “every minute less of wasted time per hour represents a 1.67% gain in productivity… where a 2% increase in productivity equates to $3 million saved (per year).”

Ciralight SunTrackers are a pioneering active daylighting solution. If you would like to learn more about Ciralight’s SunTracker product, contact our sales team today.

(1) ed. Halonen, Liisa et al. (2010). “Guidebook On Energy Efficient Electric Lighting For Buildings.”

(2) Federal Energy Management Program Newsletter, March/April 2002

(3) Edwards, L. and Torcellini, P. (2002). “A Literature Review of the Effects of Natural Light on Building Occupants.”

(4) Environmental Design & Construction, July 2002 and January 2001

(5) Thayer, B.M. (1995). “Daylighting and Productivity at Lockheed.” Solar Today; Vol. 9, No. 3, May/June 1995; pp. 26-29.

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