When smart meters are fully operational, you will have a choice to be provided with more accurate information about energy usage across the day to allow you to better manage your bills with greater accuracy than at present. This information can also help you to make more informed choices about your consumption and tariff.
 
Currently, your electricity meter is manually read by ESB Networks up to four times per year. Smart Meters are able to remotely send your meter readings to ESB Networks. So with smart meters, there will be no need for estimated bills.