On December 16th 2011, USIGT, in conjunction with D5 Enterprises, retrofitted the existing Metal Halide (MH) parking lot site lighting fixtures at the Perrin 2 Retail Shopping Center in Fresno, CA with Xenon Ultra Constant Discharge (Xenon) bulbs/ballasts. The project at the facility consisted of retrofitting 39 320 Watt MH and 12 100 Watt MH US Pole Co. LCKM1 architectural lantern style fixtures with 120 Watt Xenon and 60 Watt Xenon configurations, respectively. Retrofit time per fixture was just over an hour per fixture with standard hand tools and can be performed by any electrician or maintenance personnel. A ladder truck was needed for the parking lot fixtures that are mounted +/- 18’ above finish grade. Circuits were 208 volt.
The original lighting load was 64.67kW. This retrofit project reduced the load to 24.91kW, which is an 61.5% decrease in power required to operate the parking lot and courtyard lighting. Foot-candle measurements increased and the quality of site lighting dramatically improved from after the retrofit was completed. The benefits of retrofitting with Xenon UCD are reusing the existing fixture housing and the existing prismatic glass reflector so the fixture optics remain unchanged. This eliminates unnecessary waste to landfills. The high efficiency of Xenon technology produces an increased ratio of lumens per watt (108 Lm/W) allowing for substantial reductions in wattage required per fixture.. The outstanding color rendering of Xenon technology increases the effective light and more closely resembles actual daylight conditions.
All comparative measurements and photographs were taken at identical times of day and from the same physical location.