The Energle Gateway is an IoT (Internet of Things) platform – all-in-one solution for gateway and server for smart buildings. It is an OpenADR2.0 compliant VEN gateway, communicating demand signals between VTN and energy devices in buildings. The Energle also functions as an IoT middleware server that enables all the energy devices to be Internet-connectable. It converts all signals from/to energy sensors and actuators into IP/Standards XML and provides Web Service based APIs for universal interoperation. It additionally does real-time data acquisition, mining, and visualization. The Energle supports a variety of data/communications protocols (visit http://www.energle.com for detailed specification).