The Con Ed power outage map, which showed more than 45,400 customers were without power, indicated the outage stretched from the far west side to Fifth Avenue.
Power was not restored until the next day. The blackout also affected a number of Broadway productions including "Harry Potter and the Cursed Child", "Hadestown", "Lion King", "Ain't Too Proud", "To Kill a Mockingbird", and "The Cher Show", which were all canceled.
At Rockefeller Center, traffic lights were out.
New Yorkers said firefighters and cops were everywhere throughout the city.More news: Hrithik Roshan Super 30 collection reached to 12 Crore on opening day
New York State Governor Andrew Cuomo said he was sending 100 State Police officers and some National Guard troops to the city to help with traffic control.
Power utility ConEdison reported that tens of thousands of people were without power, and many subways have gone dark.
The AMC Lincoln Square 13 movie theater on the Upper West Side was evacuated.
"From what we're seeing at this moment, this is simply a mechanical problem and one, again, that sounds like it is addressable in a reasonable period of time", de Blasio said.More news: Billie Eilish Teases A Possible Collab With Justin Bieber
Businesses have been left without electricity, elevators stuck and subway cars stalled. "It's completely dark, people were coming up using their flashlights on their phones".
"People were having fun at first when the lights went out; it was something different", said the manager on duty at the Oxbow Tavern on Columbus Avenue and 71st Street, who declined to give his name.
Another Twitter user complained that she "came all the way from Philadelphia" to see the comedian Dave Chappelle perform standup on Broadway "but thanks to the #blackout show was canceled".More news: Von der Leyen courts lawmakers in bid to become Commission chief