The provisions of resolution ARG/gas 155/08 “Instructions for the obligatory commissioning of gas metering units meeting minimum functional requirements and having remote reading and remote management functions, for all redelivery points on natural gas distribution networks” released from Authority for gas and electricity (AEEG), introduces an obligatory requirement, to be phased in gradually over time, for the commissioning of metering units meeting the minimum functional requirements established for each category, for all redelivery points on natural gas distribution networks.