About Commonwealth Edison
Commonwealth Edison is a large-scale utility company in northern Illinois. It delivers electricity and natural gas services to more than 4 million residents and businesses. Originally founded in the 19th century as Western Edison Light Company, it is now a subsidiary of Chicago-based Exelon Corporation.
The company, known to most as ComEd, provides energy to customers in Illinois cities like Chicago, Naperville, and Rockford. To compare ComEd’s rates per kilowatt-hour (kWh) to other suppliers near you, enter your ZIP code on the Choose Energy marketplace.