The Smart Metering and Billing System project is designed to automatically measure electricity consumption and generate bills without manual intervention. Using a microcontroller with IoT or GSM connectivity, the system records real-time power usage, calculates the bill, and sends the details to the consumer or utility provider.

This reduces human error, electricity theft, and delays in billing, making it highly suitable for smart grids and modern energy management systems.

Parts Used:

1. Microcontroller (Arduino / ESP32 / PIC) – Processes metering data
2. Energy Metering IC / Current & Voltage Sensors (ACS712, ZMPT101B, ADE7757) – Measures power usage
3. GSM / Wi-Fi Module (SIM900A / ESP8266 / ESP32 Wi-Fi) – Sends consumption and billing data
4. LCD / OLED Display – Shows real-time readings and bill
5. Relay Module (Optional) – Disconnects supply in case of overuse or non-payment
6. Power Supply (Adapter/Battery) – Runs the system