Case Study: UC Davis Exterior Lighting Retrofit

Most parking garages use high intensity discharge light sources that operate continuously regardless of lighting needs. These facilities typically do not employ energy-saving control strategies such as daylighting or time clock scheduling, and no considerations are made for lighting control based on occupancy. Garage lighting, designed to only a single static level, wastes energy and contributes to peak demand during the day and light pollution at night.

CLTC developed a bi-level parking garage luminaire that integrates state-of-the-art induction sources and occupancy-based dimming controls. The Everlast step-dimming parking garage luminaire automatically reduces to 50% power on vacancy and increases to 100% power on occupancy, using a fixture-integrated occupancy sensor.