final guidelines of good practice on regulatory aspects of smart metering for electricity and gas (linji gwida finali ta prattika tajba dwar laspetti regolatorji talmetraġġ intelliġenti għallelettriku u lgass) frar 2011 ref e10rmf2905 http//wwwsmartgridscrefr/media/documents/ergeg_guidelines_of_good_practicepdf