Dominion Virginia Power said electricity was lost to the Tysons Corner Center Sunday afternoon.
Dan Genest said the outage happened shortly after 1 p.m. He said crews are trying to locate the reason for the loss of power.
He said the power loss is only affecting parts of the mall and not the entire location. He said Bloomingdale's and Macy's do not have power.
Bob Mauer, a spokesman for the mall, said they are assessing the situation, but the mall is not closed.
Fairfax County police said a malfunctioning generator created some smoke in the mall.
Some people contacted NBC4 on Twitter and email about the power outage. Many are leaving the mall and said police and fire crews are on the scene.
Jacqueline Policastro said fire trucks were outside at Bloomingdales and there is so much traffic that people can't even pull out of spots in the parking garages.
— JacquelinePolicastro (@J_Policastro) January 18, 2015
She said there was a clear smell of smoke inside the mall, and police are moving shoppers away from the Bloomingdale's area of the mall. Policastro said many stores still have their gates up.
One person told us traffic in the parking lots is snarled as some people are trying to leave the darkened shopping area while others are trying to get in.