The advent of technology and infrastructure for 4G/5G/6G along with IoT/Web3.0 concepts are catalyzing smart cities development and can be deployed for improving the lives of citizens and residents. A key pillar of smarter cities is the use of technology to help increase energy efficiency and reduce carbon emissions and pollution. Many of the various techniques applicable within industrial, commercial, and residential sectors for this purpose require accurate energy use and signal modelling of assets and infrastructure to function effectively. In this paper authors present and test a prototype of a low-cost, real-time IoT-based Energy-Aware Distributed Control System (eDCS) platform. The platform is intended to support combined signal/energy modelling and control in industrial process applications. A Prototype of a flexible, Arduino-based Edge device for signal capture, advanced control and power/energy monitoring is developed and validated on a heat treatment furnace and a process trainer. IoT connections allows integration of the process and energy signals into a commercial SCADA (supervisory control and data acquisition) system. Initial interfacing and modelling results are presented in the paper. Energy-aware control of relevant assets forms a future work.