%0 Conference Paper
%K lighting control
%K photoelectric cells
%K scheduling
%A Francis M Rubinstein
%A Michael J Siminovitch
%A Rudolph R Verderber
%B IEEE-IAS Annual Conference, October 7-1, 1990
%C Seattle, WA
%D 1990
%G eng
%I IEEE
%R 10.1109/IAS.1990.152154
%T 50% Energy Savings with Automatic Lighting Controls
%V 2
%1 <p>Lighting Systems Group</p>
%2 LBL-30179
%8 10/1990
%@ 0-87942-553-9
%X <p>An electronically ballasted lighting control system that was demonstrated at an office building is described. The system demonstrated the energy savings and demand reduction capabilities of a lighting control system designed to exploit all major control strategies, including scheduling, daylighting and lumen maintenance. After nine months of operation, lighting energy savings of approximately 50% relative to previous usage have been consistently achieved. A two-part control photocell, shown to be effective at maintaining light levels at the workplane regardless of the daylight contribution, is presented.</p>