It happened at the Astoria East and North Queens Con Ed plant.
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New Yorkers reported seeing massive blue lights in the city following the explosion and took to social media to share photos and videos.
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The NYPD says a fire caused by the explosion is under control.
The mayor's office says there are scattered power outages, including at LaGuardia Airport. The FAA has issued a ground stop at LaGuardia while they investigate.
The NYPD says there have been no injuries.
There is no 7 train service between 74 St-Broadway and Flushing-Main St in both directions after a power outage caused by the explosion.