Technology improves energy efficiency in buildings through smart systems that monitor and control energy use. Innovations such as smart thermostats, energy-efficient lighting, and IoT sensors adjust settings based on occupancy and usage patterns, reducing waste. Building management systems (BMS) integrate these technologies to monitor energy consumption in real time, optimizing operations and identifying areas for improvement. By implementing such technologies, organizations can lower their energy costs, reduce carbon footprints, and contribute to environmental sustainability while enhancing overall comfort for occupants.