The blue light illuminated the sky long enough for New Yorkers who are skilled with a camera to take photos of the explosion that show the scope of the blue light over a city as big as NY.
"The incident is under control". No injuries were reported. Power has since been restored there and flight news site NYC Aviation tweeted that flights are arriving again.
The explosions temporarily closed La Guardia Airport in Queens.
The New York City Fire Department also tweeted confirmation that it was investigating a transformer incident at Con Edison's Queens facility. NY police said the fire was under control as of 9:40 p.m. and no injuries were reported.
CBS New York reports NYPD said a transformer exploded at the utility company's facility in Astoria shortly after 9 p.m.
The lights caused a stir on social media as several witnesses posted photographs and videos of a bright, blue flash that filled the night's sky.
He said the MTA had power, but there were delays on the 7 train and that power was "coming back on" at LaGuardia, but travellers should expect delays. Mayor Bill de Blasio spokesman Eric Philips added that "scattered" power outages were reported elsewhere.
The airport urged people to check their flight status with their carrier, saying "Many flights are departing, some are not".