Engineers have been working round the clock to restore electricity to customers after storms downed power lines.
An NIE engineer working near Castlewellan, County Down
Northern Ireland Electricity (NIE) warned on Sunday that several hundred customers in rural parts of Counties Down and Armagh would probably be without electricity for a second night.
At one stage, 90,000 NIE households and businesses were left without power following Saturday's overnight storms.
NIE engineers and linesmen have been working to replace broken poles and lines.
A number of roads throughout the province were blocked by fallen trees, and flooding and landslides affected many areas.
Meanwhile, a Newcastle family are counting themselves lucky after a chimney fell through their roof in high winds, missing them by inches.
Margaret Pollock said more than a ton of bricks crashed onto her bed and landed in her daughter's bedroom.
She said she had just got out of bed on Saturday morning when it happened.
The bricks landed where she had been sleeping seconds earlier.