ESB technicians are trying to restore power to thousands of customers in Dublin.
Up to 20,000 people were affected this morning and engineers say service is now almost completely restored.
A fire at an ESB substation caused the outage this morning.
The blaze broke out in the early hours at a transformer on Brewery Road in Leopardstown.
Three units of the Dublin fire brigade attended the scene.
The outage has left residential areas in the dark including Blackrock, Mount Merrion, Stillorgan, Booterstown and Rathfarnham.
Dublin Fire Brigade are warning all households to ensure electric ovens, blankets and heaters are turned off.
As power is restored by @ESBNetworks in South Dublin, ensure that electric ovens, electric blankets & heaters etc are turned off. #staysafe
— Dublin Fire Brigade (@DubFireBrigade) September 12, 2015
Following a fire at one of our Substation we have a number of outages in the #Dublin area for updates see http://t.co/VMtxFrW7FY Apologies
— ESB Networks (@ESBNetworks) September 12, 2015
In Limerick, 130 customers will be without power due to a fault in the Abbeyfeale area which should be fixed by around 2pm.
Some 223 customers in Belmullet in Mayo were also left without power this morning which has since been restored.
Power back on in Blackrock, house alarms started going off just as I walked from the bus, thanks @ESBnetworks #Twit… pic.twitter.com/dtrAXXpvgc
— Rónán Mi$téil (@misteil) September 12, 2015
@ESBNetworks our power just came back in mt Merrion, many thanks to your crews for their hard work
— pluincee (@pluincee) September 12, 2015
