Sub-systems:

1. Energy Meters with RS-485 interface
2. Central PC
3. Application software

Utilities like electricity boards are moving towards a licencee system for industrial parks, residential flats etc. In this case, the licencee is billed in bulk by the utility for the energy supplied, who in turn collects electricity charges from the individual clients. In the Networked Pre-paid Energy Metering System developed for such a licencee system, special pre-paid meters are installed in client sites and networked through an RS-485 interface to a PC at the central control room of the licencee who can address each of the meters through the RS-485 network to charge it with pre-payment details, based on the amount paid in advance by the client user. At other times, network can be gainfully used by the licencee to monitor the energy usage pattern by each of the clients as part of an over all energy management initiative. There will also be option for a client to monitor his power consumption, pre-payment status etc through a PC.