For monitoring the energy supply from the hybrid small-scale wind turbine generators and rooftop solar power systems, this paper presents the design of a management program for the studied system based on the Internet of Things (IoT) technology. The proposed system consists of digital power meters that communicate wirelessly to the Programmable Logic Controller (PLC) through the ZigBee communication standard. Using a free cloud platform will greatly facilitate the Supervisory Control and Data Acquisition (SCADA) interface design work for a Human Machine Interface (HMI) or mobile phone. This system configuration may be easy to be fit to collect electrical information such as voltage, current, power, frequency, and energy extract from the designed system to be monitored.