Abstract :
The future of electricity billing to the small power and commercial user lies in pre-payment metering. The system consists of three major items. The dispenser is placed inside the consumer´s home, it allows the consumer to use electricity as long as they are in credit, it also indicates how much electricity is being used. The validation or credit dispensing unit, generates tokens or encrypted numbers to the value of money paid. The validator should be placed at convenient sites such as shops or workplaces. The master station is a computer that provides the management and financial control of a project area