Public Power Utilities in Illinois: Full List (42)

Public power utility	Retail electric customers
City of Springfield	71,179
City of Naperville	62,990
City of St Charles	16,461
City of Batavia	11,398
City of Geneva	10,287
Rochelle Municipal Utilities	7,009
City of Highland	6,912
Village of Chatham	6,470
City of Peru	6,161
Village of Rantoul	6,127
City of Rock Falls	5,314
City of Waterloo	5,187
Village of Winnetka	5,044
City of Princeton	4,564
City of Mascoutah	4,146
City of Geneseo	3,795
City of Metropolis	3,726
City of Fairfield	3,259
City of Sullivan	3,077
City of Carmi	3,068
City of Flora	2,753
City of Breese	2,570
City of Marshall	2,558
City of McLeansboro	2,513
City of Oglesby	2,497
City of Red Bud	2,344
Village of Freeburg	2,297
City of Carlyle	2,080
City of Casey	1,842
Village of Riverton	1,726
City of Newton	1,657
City of Bushnell	1,575
City of Altamont	1,511
City of Farmer City	1,270
Cairo Public Utility Company	1,142
City of Roodhouse	948
Village of Greenup	914
Village of Bethany	685
Village of Ladd	677
City of Albany	483
City of Allendale	263
University of Illinois	1

Largest first by retail electric customers, as each employer reports it to its federal registry.

Source: U.S. Energy Information Administration, Annual Electric Power Industry Report (Form EIA-861), 2024 final data. Data captured October 2, 2026.

Jobs at public power utilities