Ms Karen Kavanagh:

When we review the allowed revenue annually, will set an overall framework that is profiled over five years. Each year, there are swings and roundabouts in terms of inflation figures, energy forecasts and unaccounted-for costs and we scrutinise all those costs annually to ensure they are efficiently incurred. The inclusion of this money does not impact on that overall revenue because it was about the total amount to be recovered. The way in which it was implemented meant that more was recovered from one pot and less from another but the overall amount of the revenue that we set on an annual basis was adhered to. It was not until we looked to reverse it that ESB Networks identified this. Further to the commission's decision in March, when we said we would reverse the rebalancing piece, we decided to do a further piece of work to look in detail at how it was applied and the individual costs. That reconciliation work will happen this year as part of our annual tariffing exercise.