Chicago, Illinois

Chicago and most of Northern Illinois are connected to the high-voltage grid through Commonwealth Edison, which was integrated into PJM’s operations in May 2004.

Population of Chicago: 2,718,782*

Total ComEd customers (residential, business and government in Chicago and surburbs): 3.8 million**

Total amount of megawatt-hours used: 18,295,340***

Fun facts:

  • The city is home of President of the United States Barack Obama.
  • The first televised presidential debate was broadcast from Chicago’s CBS Studios on September 26, 1960, between John F. Kennedy and Richard Nixon.
  • The world’s first skyscraper, the Home Insurance Company, was built in 1885.
  • Walt Disney was born in Chicago in 1901.
  • Some of the Chicago region’s largest employers include Advocate Health Care, Walgreens, AT&T, United Continental Holdings Inc., Abbott Laboratories, J.P. Morgan Chase, Allstate Corp., and Jewel-Osco.

Fun facts come from and

*2013 U.S. Census Bureau population estimate

**ComEd System Facts

***2013 Energy Information Administration information