Case Study - Boeing Employee Tennis Club
                                                                                                 Boeing Employees Tennis Before
This project consisted of replacing the lighting on nine indoor tennis courts at the Boeing Employees Tennis Club in Auburn WA. The existing Devoe brand lighting system was comprised of 26 6-lamp T12 fluorescent fixtures per court, for a total of 234 fixtures for all nine courts. The existing fixtures were suspended at 19’ and aimed at 45 degrees to the floor. Courtlite worked closely with the local utility provider as well as the management at the facility to provide energy reduction, increase the light quality, and provide multi-level lighting controls. This allowed them to dim the lighting system during daytime hours when existing skylights let in natural daylight.
Project scope
Pacific Energy Solutions approached this project with several objectives: energy reduction, increased light quality, system manageability, and substantial project funding from the local utility provider, Puget Sound Energy. The Boeing Employees Tennis Club decided to install a version of the Courtlite Pro lighting system, consisting of twenty-six 8’ six lamp T5 fixtures (13 fixtures per side) per court. The Courtlite fixtures were suspended at elevations ranging from 19’ to 26’ above the floor, and 6’ feet beyond the sidelines. The proprietary design of the Courtlite fixture allows the light source to be aimed at predetermined angles to the court for unprecedented uniformity from a direct lighting system. The existing lighting system was operating at full capacity 16 hours per day, as the T12 light fixtures had no dimming ability. Due to the multi-ballast instant ON/OFF feature, the Courtlite Pro system allows for the selection of several lighting levels. The club is able to use different settings ranging from 3024W to 6084W per court during daylight hours when natural light is present, and at full power (9126W) during non daylight hours and for tournament play. The final results of this project include a an energy reduction of 253,330 KW Hours per year (44%) with an annual savings exceeding $16,000. Equally important is a dramatic increase in light quality.
3D rendering using lighting analysis software
| Fixture description | Existing T12 fluorescent | Existing totals | Courtlite Pro Direct Side | Courtlite Pro Direct Center | Totals |
| Quantity of fixtures | 234 | 234 | 78 | 78 | 156 |
| Lamps per fixture | 6 | – | 6 | 12 | – |
| Lamp type | 95-W HO | – | 54-W T-5 HO | 54-W T-5 HO | – |
| Watts per fixtures w/ ballast | 480 | – | 351 | 702 | – |
| Total watts | 112,320 | 112,320 | 27,378 | 54,756 | 82,134 |
| Operation hours per day | 14.24 | – | 11 | 11 | – |
| Operating days per week | 7 | – | 7 | 7 | – |
| Operating weeks per year | 52 | – | 52 | 52 | – |
| kWh per year | 582,195 | 582,195 | 109,622 | 219,243 | 328,865 |
| Cost per kWh | $0.064 | – | $0.064 | $0.064 | – |
| kWh cost per year | $37,260 | $37,260 | $7,016 | $14,032 | $21,047 |
| Total cost | $37,260 | $37,260 | $7,016 | $14,032 | $21,047 |
| Total savings per year | $16,213 | ||||
| Savings % | 44% | ||||
| Total kWh | 253,330 | ||||
