This project consisted of replacing the Seattle Parks Dept. Tennis facility lighting on their ten indoor tennis courts. The existing lighting was comprised of 12.8 1,000-watt metal halide fixtures per court, a total of 128 for the entire facility. The metal halides were suspended at 16’ aimed at the 40’ ceiling producing an indirect light source. In addition to the indirect halides, at the end of each court, 10’ behind the baseline, were four 8’ 2-lamp 460-watt T12 VHO fixtures suspended at 16’, aimed directly down to the court. Courtlite worked closely with Seattle City Light and the Seattle Lighting Design Lab to develop a solution that would radically reduce the facilities energy consumption, dramatically increase the light quality, and provide manageability. The solution was the Courtlite Pro Direct Lighting System integrated with an Alerton lighting management control system custom designed for the Courtlite System by ATS Automation.

Pacific Energy Solutions approached this project with several objectives: Energy Reduction, Increased Light Quality, System Manageability, and substantial project funding from Seattle City Light. The Seattle City Parks Dept decided to install the Courtlite Pro lighting stem, Consisting of twenty-four 8’ six lamp T5 fixtures (12 twelve fixtures per side). The Courtlite fixtures were suspended 20’ above the floor, and 6’ feet beyond the sidelines. The proprietary design of the fixture allows the light source to be aimed at 45 degrees to the court for uniformity. The existing lighting system was operating at full capacity 16 hours per day as the 1,000-watt metal halides take too much time to warm up. Due to the instant ON/OFF feature, the Courtlite Pro fixtures are designed for several lighting level: totally off or only 2-lamps (2,808-watts) per fixture are on when the court is vacant, 4-lamps (5,616-watts) per fixture for recreational play, and all 6-lamps (8420 watts) for tournament play. Matched with the Alerton management System the lights on the individual courts are automatically turned on for the time that the court is booked, and then goes to vacancy mode. The final results of this project Include: a reduction of 750,000 Kwh per year (73%) with an annual savings exceeding $40,000, and equally important, a dramatic increase in light quality...