To improve building performance and achieve energy efficiency, new energy monitoring technology must be used. Facility managers can acquire real-time insights into energy consumption patterns, spot inefficiencies, and execute focused energy-saving tactics by utilising smart metres, submetering, IoT sensors, energy management software, and energy dashboards. These technologies make it possible to optimise building systems and make data-driven decisions, which results in huge energy savings, lower operating costs, and a more sustainable future.