The high efficiency and light quality delivered by the Cree® luminaires require less energy demand than traditional sources. The two-level control increases the energy savings directly proportional to automatic and pedestrian traffic patterns.
Through the use of an integrated occupancy sensor, the two-level fixture can be dimmed to one-third total power while maintaining 50 percent lumen output. Compared to traditional HID lamps, the two-level system can reduce a facility’s annual energy and maintenance budget up to 80 percent.
The high-performance LEDs within the Cree Edge™ luminaires have a color temperature of 6000K and deliver total fixture efficiencies of more than 55 lumens per watt in high mode and more than 90 lumens per watt in low mode with excellent uniformity.
Benefits of the installation include 70 percent energy savings compared to 150W HPS (in low mode), 30,000 kWh savings per year compared to HPS, and reduced greenhouse gas emissions. In addition, improved light quality and uniformity ratios compared to traditional sources resulted in increased visibility and safety. IES recommended minimum luminance and uniformity levels were also achieved in low mode.