Authors Ashwini RaghavDepartment of Electronics and Communication Engineering, K.L.N. College of Engineering, Tamilnadu, IndiaSneha AnbarasanDepartment of Electronics and Communication Engineering, K.L.N. College of Engineering, Tamilnadu, IndiaRamesh KDepartment of Electronics and Communication Engineering, K.L.N. College of Engineering, Tamilnadu, IndiaSowndharya SDepartment of Electronics and Communication Engineering, K.L.N. College of Engineering, Tamilnadu, India Abstract The Internet of Things (IoT) has revolutionized various domains, including energy management, by enabling smart monitoring and automation. This paper presents an IoT-based energy metering and billing system designed to improve efficiency, accuracy, and real-time monitoring of power consumption. Traditional metering and billing methods are prone to human errors, delays, and inefficiencies. Our proposed system integrates smart meters with IoT connectivity to provide real-time energy usage data, automated billing, and remote control capabilities. The methodology involves deploying smart meters with embedded sensors and wireless communication modules to transmit data to a cloud-based platform. Users can access their energy consumption data through a mobile application, ensuring transparency and timely bill payments. This approach enhances energy management for consumers and utility providers while reducing operational costs. The paper also discusses the hardware components, real-time challenges such as network security, data accuracy, and system reliability, and provides a conclusive evaluation of the system’s effectiveness. Keywords Real-Time Monitoring System Smart Energy Meters IoT Billing Automation Electricity billing Internet of Things IoT-based energy meter Citation of this Article Ashwini Raghav, Sneha Anbarasan, Ramesh K, & Sowndharya S. (2025). 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