According to the U.S. Fed News, the Navy's Technology Evaluation Program, managed at the Naval Facilities Engineering Command's Engineering Service Center in Port Hueneme, California, recently completed an assessment of High Intensity Discharge (HID) lighting dimmers.
The dimmers are designed according to Illumination Engineering Society of North America standards to reduce unnecessary lighting in outdoor areas, such as parking lots or roadways, that need constant lighting for more than eight hours. The devices start by applying full voltage to the lights and then dimming them to appropriate levels. The dimmers are installed on the circuit instead of on individual lights, allowing for potential cost savings. The Navy evaluated four dimmers based on both power and lighting quality. They found illumination was reduced between 13 percent and 31 percent, while power was reduced between 19 percent and 32 percent. Overall, these reductions resulted in savings ranging from $655 to $1,243 annually.