IoT (Internet of Things) essentially is the networking of smart devices, buildings and other items with electronics, which enable the collection and exchange of data.
IoT has been shown to provide energy efficiency when utilized correctly. Examples of energy efficient IoT are abundant: Things may be simple sensors (e.g. temperature sensor in a room), more complex sensors (e.g. electrical power measuring device), actuators (e.g. HVAC room controller, motor), or complex devices (e.g. industrial circuit-breaker, PLC providing home, building or industrial automation). The IoT application may range from a simple monitoring application such as gauging the temperature in a building, to a complex application such as providing complete energy automation of a campus.