Areas in Counties Londonderry, Antrim and Down were affected.
A spokesperson for Northern Ireland Electricity said was an equipment fault was detected at 21.40 BST.
All properties have had power restored had their power restored by 22.14 BST.

The 23-year-old Ivorian broke hearts across Great Britain when he snatched victory from Lutalo Muhammad in the last second of the men's -80kg taekwondo Olympic final.
It was the Ivory Coast's first Olympic gold and he has, since Rio, become a national hero.
He has been gifted a new house and a 50 million CFA franc (£65,400) cash bonus.
Not bad for an athlete who only has access to poor facilities and finds it hard to raise funds to meet his training costs.
Cisse insists, however, his celebrity status won't distract him from his taekwondo title defence in Tokyo in 2020.
"People look at me differently now, I've become a national symbol. I can't walk in the street without being recognised, I'm a star," he told AFP.
"People approach you, they congratulate you, it's nice, touching, all this gives me strength to achieve even more."
Cisse, who stunned third seed Muhammad with a four-point score right at the death to win 8-6, was honoured by Ivorian president Alassane Ouattara on his return home.
He took the opportunity to ask for an improvement in conditions and coaching for athletes.
"We were supported. The Government did what it could. But we need new laws passed so that athletes can live off their sports," pleaded Cisse.
His request was heard and Ouattara promised to examine what could be done.
"We have talented boys and girls in taekwondo. We have to help them," insisted Cisse.
"I want to tell my little brothers to believe in their dreams. I've gone from nothing to become someone, without any help."

Senior judges in Belfast have lifted an injunction on the PSNI taking possession of Winston Rea's recorded account to Boston College researchers.
Detectives were present with a bag ready for the handover of the tapes.
They were given the all-clear after lawyers for Mr Rea confirmed their final bid to secure a block had been turned down.
The tapes had been held under lock and key at the Royal Courts of Justice.
The European Court of Human Rights in Strasbourg refused to grant an interim prohibition as part of efforts to stop the PSNI from obtaining them.
A judge said the time had come "to lift the injunction and allow the materials to be examined by the police".
Detectives want to access the recordings as part of their investigations into murder and other paramilitary crimes from the 1970s to 1990s.
Mr Rea's legal team argued that it would breach his right to privacy.
He was among dozens of loyalists and republicans who provided testimonies to Boston College staff compiling an oral history of the Northern Ireland conflict.
Interviews were given on the understanding that tapes would not be made public until after their deaths.
In 2013, detectives investigating the abduction and murder of Belfast mother-of-10 Jean McConville in 1972 secured the transcripts of former IRA woman Dolours Price's account.
That material was handed over following court battles on both sides of the Atlantic.
Mr Rea's barrister said his client was "confident that there is nothing in his past or anything contained in these tapes which hasn't already been dealt with by the criminal courts".
"He's a man who has health difficulties," he added.
On that basis, lawyers for both the Public Prosecution Service (PPS) and the PSNI Chief Constable argued that the recordings should now be released.
Several thousand customers were left without electricity for a time on Wednesday night.
[NEXT_CONCEPT]
The phrase "one man's loss is another man's gain" could not be more apt than in the case of Cheick Sallah Cisse.
[NEXT_CONCEPT]
Police are finally to get access to interviews a former loyalist prisoner gave to an American university project.