The fault which occurred at 1.30pm.
Over 800 ESB customers in the midlands are without power this afternoon.
764 homes and business are affected by an outage in Clonminch, Tullamore with 38 customers without supply in the Pallas area of Portlaoise.
The utility is apologising for loss of supply and says crews are working to repair the faults.
Power is due to be restored to their Tullamore customers at 7.30pm.
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