Workers have restored power to the remaining homes in Aurora affected by a power outage Monday.
City spokesman Dan Ferrelli said all customers had power by 5:30 p.m.
ComEd officials said a widespread outage affecting as many as 24,000 customers was reported just after 12:30 p.m. Monday and crews were dispatched.
Between 12:30 and 3:30 p.m., power was restored to nearly 20,000 customers, including Westfield Fox Valley Mall. An additional 300 remained without power until around 5:30 p.m.
City spokesman Dan Ferrelli said residents should not be calling 911 if they experience an outage. All inquiries about an outage should be directed to ComEd at (800) 334-7661 or ComEd's website at comed.com.
"While officials understand the heightened concern of the outage due to the brutal cold, Aurora's 911 operators have been inundated with calls concerning ComEd response, restoration times, and other questions of which they have no information and should be directed to the utility," Ferrelli said in a statement released Monday afternoon. "The number of calls being received can compromise assistance to people having immediate, life-threatening emergencies." A 24-hour warming center exists at the Aurora Transportation Center, located at 233 N. Broadway, for anyone in need.