The ESB says it's working from first light to reconnect customers.
Around 18,000 homes, farms and businesses are without electricity this morning.
Its after high winds and stormy conditions yesterday evening.
The Midlands has escaped the worst of the effects but a fault around Mountrath in Laois has left 83 customers without power, while there are 41 cut off in Athy.
ESB Networks says its crews have been deployed since first light to restore power, with those efforts to continue throughout the day.
The vast majority of impacted customers are expected to have supply restored by this evening.
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