Building Energy Management Systems (BEMS) are integrated systems designed to monitor and control a building's energy use. They help 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. These systems often utilize advanced software and hardware to provide real-time insights into energy performance. With features like automated controls and reporting tools, BEMS enable facility managers to make informed decisions about energy usage, contributing to sustainability goals and compliance with regulations related to energy efficiency.