Thousands of homes across south Dublin were left without power this morning following a fire at an ESB substation.
Three units of the Dublin Fire Brigade responded to the alarm which was raised at approximately 530am this morning
ESB have said that the "large fault" at the Leopardstown substation affects power to the areas of Mount Merrion, Blackrock, Stillorgan, Foxrock, Leopardstown and Booterstown.
Crews from the network worked furiously to restore the fault on Brewery Road that caused the substantial outage.
Power to 20,000 homes and businesses has been restored as of 11am this morning.
Some customers were left in the dark for over four hours.
Customers have been asked to check for progress updates on powercheck.ie.
Meanwhile in Limerick, 130 houses in the Abbeyfeale area were also affected by a power cut.
The ESB said it expected power to be restored there by this afternoon.
ESB have also reported two large faults in Co Donegal this morning in the areas of Letterkenny and Milford.
More to follow.