Abstract: The rapid growth in energy demand and the need for efficient power utilization have accelerated the adoption of intelligent energy monitoring systems. Conventional electricity meters lack real-time monitoring, user interaction, and automated control, which often results in inefficient energy usage and billing inaccuracies. To address these challenges, this paper presents the design and implementation of a Smart Prepaid Energy Meter with Automatic Power Cut-Off based on Internet of Things (IoT) technology. The proposed system employs a Wemos D1 microcontroller integrated with voltage and current sensing modules to continuously monitor electrical parameters and compute power consumption in real time. The measured data is displayed locally on a 16×2 LCD and transmitted to a web-based application through Wi-Fi for remote monitoring and analysis. A prepaid billing mechanism is incorporated, where users recharge their account using a simulated currency for demonstration purposes. The system dynamically deducts the balance according to energy usage, and when the balance reaches zero, the power supply is automatically disconnected using a relay module. Additionally, the web application provides features such as consumption history, graphical visualization, and intelligent recommendations for energy conservation. The proposed system is cost-effective, scalable, and suitable for industrial and residential applications. It promotes energy awareness, enhances user control, and ensures efficient power management through automation and real-time data accessibility. Keywords: Smart Meter, IoT, Prepaid Energy Meter, Wemos D1, Power Monitoring, Automatic Power Cut, Energy Management, Web Application. Title: INDUSTRY LEVEL-SMART METER Author: Prof. Dilip Kapse, Gauri Ghadge, Janvi Zade, Kumkum Tiwari, Pranoti Mujbaile, Shivani Jaiswal, Shruti Vaidya, Prof. Amol Morankar International Journal of Novel Research in Electrical and Mechanical Engineering ISSN 2394-9678 Vol. 13, Issue 1, September 2025 - August 2026 Page No: 8-15 Novelty Journals Website: www.noveltyjournals.com Published Date: 20-April-2026 DOI: https://doi.org/10.5281/zenodo.19663146 Paper Download Link (Source) https://www.noveltyjournals.com/upload/paper/INDUSTRY%20LEVEL-SMART%20METER-20042026-7.pdf
Kapse et al. (Mon,) studied this question.