Energy grid sounded alerts twice last year

ESB crews on a callout in Letterfrack, Connemara, during Storm Éowyn in January. Picture: Eamonn Farrell/ RollingNews.ie

Ireland’s energy grid sounded alerts twice last year, with five further warnings that supply was within margins that were considered “not optimal”.

System alerts, which were previously known as amber alerts, are issued by grid provider EirGrid when the buffer between electricity supply and demand is “tighter than optimum”.