CHICAGO–(BUSINESS WIRE)–Following work to maintain the grid during three days of extreme heat, ComEd crews are restoring power to customers impacted by severe storms that moved through northern Illinois Thursday night. The storms had heavy rain, lightning and wind gusts in excess of 50 miles per hour. Since the storms began, more than 45,000 customers have been restored. 10,400 customers remain out of power. Additional severe weather is possible on Friday and through the holiday weekend, with