ComEd
ComEd
Alliance to Save Energy Resources
Associates of the Alliance
Alliance Associates represent more than 100 companies and organizations committed to advancing energy efficiency. For more information on the Alliance Associate program and how to join, visit our Join page.
Alliance Associate
ComEd
Commonwealth Edison, commonly known by its syllabic abbreviation as ComEd, is the largest electric utility in Illinois, and the primary electric provider in Chicago and much of Northern Illinois. Its service territory stretches roughly from Iroquois County on the south to the Wisconsin border on the north and from the Iowa border on the west to the Indiana border on the east.