Engineers worked this morning to restore power to parts of Northern Ireland but 23,000 homes and businesses still remain without electricity after this week’s storm.
Power has been restored to 77,000 homes and businesses who were without supply over the last two days due to the unprecedented weather condition.
Large areas of counties Tyrone, Derry and Antrim were lashed by blizzards, heavy rain and high winds on Tuesday, with up to 300 people rescued from a mountain road after conditions overwhelmed vehicles.
Sara McClintock from Northern Ireland Electricity said: “Conditions on the ground remain difficult in many areas. We used helicopters yesterday to survey inaccessible parts of the network and to pinpoint where to send repair crews. These aerial surveys will continue today.
“With the assistance of the Department of Regional Development, we were also able to use a snow plough to help teams access one of our substations in the Dungannon area.
“Over 120 additional engineers and linesmen are arriving this morning from the Republic of Ireland and Great Britain".
“All available resources, whether people or equipment, are being deployed but there are still hundreds of faults on the network which need to be repaired, many of which are complicated and will involve replacing poles and restringing lines.”
A spokeswoman for the ESB said 30 ESB crews were travelling to Northern Ireland to help NIE restore power to 23,000 homes.
Meanwhile, mountain rescue teams in Wicklow have reported that the Sally Gap is impassable and should be avoided because of heavy snow. The Wicklow Gap is passable but with care.
Due to adverse weather conditions at sea, today's arrival and departure of the MV Oscar Wilde has been disrupted. Tonight's 9.30pm sailing to Cherbourg is expected to depart at approximately 11pm.
Met Éireann is forecasting cold and breezy weather conditions for the rest of today with sunny spells and dry apart from scattered showers. Ulster will experience severe frost tonight as air temperatures fall below -2 degrees.
Ireland recorded the coolest March since 1987 with temperatures struggled to reach double figures in many areas.
There was some consolation, however, as sunshine totals were above average nationwide. Kerry soaked up the most rays, with Valentia Observatory recording a total of 159 hours - its sunniest March since 1955.
By far the sunniest period of the month was between March 7th and 10th, when daily values of more than 10 hours were widely recorded.
The first half of the month also saw little rain fall, with some eastern stations not recording a drop until March 16th.
Met Eireann’s weather summary put the dry weather down to a large area of high pressure centred close to the country early in the month.
As the anticyclone backed off, Atlantic depressions moved in and brought with them the wet, windy and
cold conditions.
Additional reporting: PA