The fault was reported at about 6 o'clock this evening.
Over a 1,000 ESB customers are without power in the midlands this evening.
The fault - affecting 1,050 homes and businesses in the Garrycastle area of Ferbane - was first reported at about 6 o'clock this evening.
Power is expected be restored at 10 o'clock tonight.
ESB Networks is apologising for the loss of supply and currently working to repair the fault as quickly as possible.
You can see the latest updates here at the ESB Powercheck Map.