Abstract: The project's objectives are to shorten lines at energy meter billing counters and automatically lower use of energy meters in the event that bills are not paid. The project also aims to offer a remedy that would reduce power and revenue losses brought on by theft of power and other illegal actions. The "Prepaid Energy Meter" is a brand-new concept used by the workplace system. Utilizing GSM technology, the user is alerted to power usage (measured in watts) and is immediately prompted to recharge if it drops below a certain threshold. All power distribution companies, private communities, computer parks, and multi-unit housing developments can use this technology.

The adoption of this project will aid in better energy management, energy saving, and the elimination of unneeded headaches associated with inaccurate billing.The automatic billing system will track realtime use and allow minimal room for argument over consumption and invoicing. The metering and billing system has been identified as one of the problematic subsystems leading to the massive revenue loss in the Nigerian power sector.

The prepaid card communicates with the power company through the GSM network. The latching Relay disconnects the consumer load from the utility supply when the prepaid card is out of balance (contactor). Through GSM/SMS mode, the electricity supplier may remotely top off the prepaid card based on user demand. The results obtained imply that the process works effectively. Delinquent bills and human error in meter readings are certain to be reduced by prior billing, ensuring the utility justified revenue.

Keywords: Prepaid, Energy Meter, GSM module, Relay, Microcontroller, LCD display

| DOI: 10.17148/IARJSET.2022.91114