Utility companies in the Washington area made progress with their power-restoration efforts overnight, leaving many fewer customers in the dark Wednesday morning.

At about 9 a.m. Wednesday, Dominion reported 19,021 homes and businesses without power in Northern Virginia -- the part of the D.C. area that had the most customers without service. At about 6 p.m. Tuesday, the company had 50,500 customers without power in the area. Dominion officials said Tuesday that they expect to have power nearly completely restored in Northern Virginia by Thursday night.

Pepco reported that the company had about 1,120 customers without power in District, Montgomery County and Prince George's County at about 9 a.m. Wednesday. That's down from Tuesday evening, when the company reported 5,704 customers affected by outages in the area. Pepco officials have said they expect to restore power to the customers who are still in the dark by late Wednesday evening.

Baltimore Gas and Electric reported that 1,417 homes and businesses lacked power in Montgomery and Prince George's Counties as of 9 a.m. Wednesday. At about 6 p.m. Tuesday, BGE was reporting 2,737 powerless customers in the two counties.

The region experienced far fewer power outages due to Hurricane Sandy than it did from the June 29 derecho. Two days after that intense storm, more than 851,000 people in the region still lacked power.