Published: 2013

Automatic daylighting control is an energy savings strategy employed in many sustainable building projects. While considerable effort is often expended in the architectural and lighting design of daylighting control strategies, the actual execution of the controls is an area for substantial improvement.

Best practices suggest that successful automatic daylighting controls require a significant commissioning effort (including calibration and functional testing) in order to reach full energy-savings potential.

In this report, we discuss the results of monitoring and commissioning several daylighting control systems in Minnesota and Wisconsin. Results show potential for economical energy savings from daylighting controls, but that there are challenges in reaching that potential. Significant additional savings was observed with commissioning of the systems. Guidelines for successful execution, startup, and commissioning of these systems are also addressed in the report.

Prepared for the Minnesota Department of Commerce.

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