A Building Energy Management System (BEMS) is a technology used to monitor and control a building's energy usage. It helps optimize energy consumption by managing heating, ventilation, air conditioning, lighting, and other systems. By analyzing data from various sensors and devices, BEMS can identify inefficiencies and suggest improvements, leading to reduced energy costs and a smaller environmental footprint. BEMS can integrate with other systems, such as smart meters and renewable energy sources, to enhance overall energy management. These systems are essential for achieving sustainability goals and complying with regulations, making them valuable for both commercial and residential buildings.