Summary - Y.4516 (06/2026) - Functional architecture of the Internet of things (IoT)-based energy optimization system in municipal lighting facilities

Municipal lighting facilities are an essential part of urban infrastructure. Operating across vast urban and suburban areas, municipal lighting systems typically run from dusk to dawn, resulting in substantial electricity consumption and significant operational costs for local authorities.
Recommendation ITU-T Y.4516 defines an energy optimization system for municipal lighting facilities. This system can enable real-time energy monitoring and adaptive lighting control. These capabilities are critical for improving energy efficiency, reducing carbon emissions, and supporting the sustainable development of cities. This Recommendation specifies the functional architecture of the Internet of things (IoT)-based energy optimization system in municipal lighting facilities.