A Building Energy Management System (BEMS) is the brain that controls a building's energy consumption. It is a comprehensive solution that controls, monitors, and optimises energy usage within a building using cutting-edge technology including sensors, data analytics, and automation. A BEMS allows real-time visibility into energy consumption trends, permitting site managers to make knowledgeable decisions to decrease energy waste and improve efficiency, be it a commercial complex, an industrial facility, or a school.