Hundreds of ComEd customers were without power in the Chicago area late Thursday morning.
ComEd said crews were working to restore power to an estimated 4,600 customers system-wide. Approximately 4,300 of those without power are in Chicago.
ComEd electricity has been restored to more than 182,000 customers since the storm began Tuesday afternoon.
The city of Chicago was the hardest-hit area within the utility's service territory.
(The Associated Press contributed to this report.)