These data are based on the number of new dwellings connected by the ESB to the electricity supply but exclude conversions and may not accord precisely with local authority boundaries. "Individual House" is where connection is provided to separate detached house. "Scheme House" is where connection is provided to two or more houses. "Apartments" is where all customer metering for the block is centrally located. 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. These data are based on the number of new dwellings connected by the ESB to the electricity supply but exclude conversions and may not accord precisely with local authority boundaries.