The final results are in for a DOE GATEWAY evaluation of a trial installation of tunable-white LED lighting systems in three classrooms at an elementary school in Folsom, California. Pacific Northwest National Laboratory evaluated the energy and photometric performance of the adaptive systems to explore energy-saving potential. The evaluation found that if both systems are operated at full output, the LED system would provide 46% annual energy savings over the incumbent fluorescent system, while producing similar illuminances.
The trial installation of the LED lighting system was completed by Folsom Cordova Unified School District with the help of the Sacramento Municipal Utility District to understand both energy-savings potential and the potential to improve student health and academic performance, especially in children with autism spectrum disorder (ASD). The goal was to gain firsthand experience with tunable LED lighting systems, in case future evidence confirms potential positive effects on student achievement.
Tunable lighting systems offer the potential for significant energy savings relative to fluorescent systems and non-dimmable LED lighting systems. These savings are attributed to the higher efficacy of LED systems versus comparable fluorescent systems, and the dimming capability provided by tunable lighting – with additional energy savings possible in schools where illuminances exceed Illuminating Engineering Society recommendations.