Almost 1,000 homes in the Armagh district are without electric following a power cut in the area.
It is understood properties in Armagh, Hamiltonsbawn and Markethill have been hit with the outage.
Traffic lights in the city centre are also down as a result.
As yet there is no reported cause but NI Electric say their repair team has arrived and is assessing the problem.
They have given an estimated return time of 4.30pm, however, it could be earlier.
There are no further details at present.