Intelligent and Energy-Efficient LED Street Lighting

An intelligent and energy-efficient light emitting diode (LED) street lighting system demonstrated by ESTCP at the Naval Surface Warfare Center (NSWC) – Carderock Division in Maryland, reduces electricity consumption by 75 percent, while improving light quality. Easily deployed in existing street lighting systems, this technology can save significant costs and energy across the Department of Defense (DoD).

Researchers at Virginia Tech, working in collaboration with Old Dominion University and Echelon Corporation, developed the smart multi-level demand-sensitive LED street lighting network that allows both clock-time and traffic-flow based lighting intensity control. The building blocks of the system include LED light fixtures, a streetlight controller, a traffic sensor, and a smart server.

The ESTCP demonstration monitored existing high pressure sodium (HPS) lamps for one year to develop a baseline of electricity consumption. After design and testing, the multi-level demand-sensitive LED street lighting system was installed at NSWC, replacing the existing HPS lamps with LEDs on the same lamp posts. Post-installation monitoring was performed for an additional year.

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