It is estimated that 406 customers are currently affected.
ESB are currently working to repair a fault which resulted in an outage in the Athgarvan area.
According to the organisation, the fault was first reported at 8.08pm last night, and is expected to be fixed by 12.45pm today.
It is estimated that 406 customers are currently affected.
ESB said: "We apologise for the loss of supply.
"We are currently working to repair a fault affecting your premises and will restore power as quickly as possible," ESB added.
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