ESB Connections data series are based on the number of new dwellings connected by ESB Networks to the electricity supply and may not accord precisely with local authority boundaries. These represent the number of homes completed and available, and do not reflect any work-in progress. Direct comparisons cannot be made with 2006, as those figures included some units built in 2005. ESB Networks have indicated that there was a higher backlog in work-in-progress in 2005 than usual ( estimated as being in the region of 5,000 units). This backlog was cleared through the connection of an additional 2,000 houses in Quarter 1 2006 and 3,000 houses in Quarter 2 2006. Due to circumstances beyond the Department's control it has not been possible to obtain a separate set of figures for the first two quarters of 2005. Direct comparisons cannot be made between pre 2009 and post 2010 data onwards. Up to 2010, completions relating to long term voids and demountables were included as new build completions.
Dublin County was split in 1994 into Fingal, South Dublin and Dun Laoghaire.
From June 1st 2014 - North Tipperary and South Tipperary Coco's merged to form Tipperary County Council; Limerick City and Limerick Coco merged to form Limerick City & County Council and Waterford City and Waterford Coco merged to form Waterford City & County Council. Data for 2014 incorporates the seperate authorites into a final figure for the new authority area in 2014. The most current data is published on these sheets. Previously published data may be subject to revision. Any change from the originally published data will be highlighted by a comment on the cell in question. These comments will be maintained for at least a year after the date of the value change.