Technologies improving energy efficiency in buildings include smart grids, IoT sensors, and automated systems like smart thermostats. These technologies monitor and control energy usage by providing real-time data on consumption patterns and environmental conditions. For example, IoT sensors can adjust lighting and heating based on occupancy and weather, optimizing resource use. Furthermore, building management systems integrate various technologies to enhance overall efficiency. By utilizing these solutions, businesses can significantly reduce energy costs and their carbon footprint, contributing to a more sustainable built environment.