An Electricity Usage Monitoring System Using Internet of Things (IoT) for Small Business Stalls

In this proposed research, an IoT -based electrical power monitoring system is developed to monitor small business stalls by adding voltage and output sensors. The system displays electrical parameters and estimated costs on a web interface and provides notifications through an instant messaging service for the stall owners. The study aims to display the results of monitoring electricity usage to users via a web server and provide notifications if there is excess usage based on the rental rules for the stall tenants. Based on the implementation design and system testing, the system can collect data on the use of electrical power at the electrical terminal of a stall using the current sensor SCT013 and the voltage sensor ZMPT101B with an average error of 0.69% - 1.41 %. The system also successfully performs real-time power and cost calculations and shows the information on the website. Additionally, a notification in the form of an excess usage warning is sent via Telegram Bot if there is an excess of 1105 watts of electricity.