Officials say several small explosions jolted some Manhattan residents and popped two manhole covers.
The Daily News reports the blasts happened late Friday night at Peter Cooper Village in Manhattan as Con Edison was restoring power knocked out by Sandy.
Nobody was hurt.
Officials told the paper the explosions occurred when the utility started restoring electricity and the current hit salt on the power lines.
At the peak, about 2.2 million people across New York lost power because of Sandy. The number was down to about 1 million late Friday night.