Commonwealth Edison, commonly known by syllabic abbreviation as ComEd, is the largest electric utility in Illinois, and the sole electric provider in Chicago and much of Northern Illinois.
Corporate Phone Number
Customer Support Phone Number
440 South LaSalle Street Suite 3300 Chicago,
IL 60605 United States
This website is built to provide the most important contact information about the Corporate Offices & Headquarters including Commonwealth Edison Co Address, Corporate Number, and more.