"The best thing is to be prepared, and I think that's where we are. We're prepared for what the worst will bring," said Vince Maione, who has been with Atlantic City Electric, a company serving south New Jersey, for 28 years.
Gov. Christie warned New Jersey residents they could be without power for a week to ten days. He said he is concerned residents may try to put generators indoors or run extension cords in a haphazard way to get electricity.
"That's a good general New Jersey rule: If it looks stupid, it is stupid," Christie said.
Sunday also brought more than 1,000 flight cancelations, with 5,559 expected for Monday and 613 cancelled for Tuesday, Flight Aware reported. The most affected airport today was Newark with 305 cancellations.
People scheduled to fly to or from the eastern third of the country are encouraged to check their flight status.
ABC News' Sydney Lupkin and Genevieve Shaw Brown contributed to this report