Electricity in Cook County, Illinois
1 electric utility serves homes in Cook County, Illinois: ComEd. The average ComEd home paid $107.32 a month in 2025 (17.7¢ per kWh). This page covers 31 cities with 25,000 or more people in the county, from Elgin to Chicago Heights.
- 31 cities
- 1 utility
- EIA and Census data, 2025
Electric utilities in Cook County
EIA lists utilities by county, not by address. Your address has one utility: its name is on your bill, or type your ZIP code in the utility finder.
| Utility | Homes in Illinois | Average bill 2025 | 1,000 kWh now |
|---|---|---|---|
| ComEdInvestor-owned utility · bill calculator | 3,753,924 | $107.32606 kWh, 17.7¢ | — |
2 smaller utilities with fewer than 1,000 homes are also listed in the county. The average bill is the 2025 average of each utility's homes that bought their power from it (EIA-861). The Illinois average was $126.59 a month.
Cities in Cook County
| City | People | City-owned utility | Solar kWh a year per kW |
|---|---|---|---|
| Elgin | 115,476 | — | 1,340 |
| Cicero | 81,858 | — | 1,338 |
| Schaumburg | 77,249 | — | 1,336 |
| Evanston | 76,380 | — | 1,331 |
| Arlington Heights | 76,216 | — | 1,339 |
| Skokie | 66,544 | — | 1,328 |
| Palatine | 65,842 | — | 1,341 |
| Des Plaines | 58,772 | — | 1,336 |
| Orland Park | 57,954 | — | 1,332 |
| Oak Lawn | 56,450 | — | 1,325 |
| Mount Prospect | 55,395 | — | 1,353 |
| Tinley Park | 55,140 | — | 1,332 |
| Berwyn | 55,001 | — | 1,327 |
| Oak Park | 52,823 | — | 1,328 |
| Hoffman Estates | 50,858 | — | 1,335 |
| Glenview | 47,711 | — | 1,312 |
| Buffalo Grove | 42,812 | — | 1,331 |
| Bartlett | 40,855 | — | 1,330 |
| Park Ridge | 38,463 | — | 1,327 |
| Wheeling | 38,391 | — | 1,328 |
| Streamwood | 38,277 | — | 1,328 |
| Hanover Park | 36,568 | — | 1,330 |
| Calumet City | 34,798 | — | 1,323 |
| Northbrook | 34,744 | — | 1,332 |
| Elk Grove Village | 31,885 | — | 1,370 |
| Niles | 30,443 | — | 1,327 |
| Burbank | 28,578 | — | 1,342 |
| Lansing | 28,068 | — | 1,326 |
| Wilmette | 27,459 | — | 1,335 |
| Oak Forest | 26,792 | — | 1,346 |
| Chicago Heights | 26,508 | — | 1,332 |
A city-owned utility is a municipal utility in the county with the city's name (EIA data). Solar output: PVWatts version 8 for a south-facing roof; see the solar savings calculator.
More about Illinois: Illinois electric rates, all Illinois utilities, home energy rebates and natural gas bills.
Who provides electricity in Cook County?
1 electric utility serves homes in Cook County, Illinois: ComEd. The name of your utility is on your bill.
Which cities in Cook County are on this page?
Elgin, Cicero, Schaumburg, Evanston, Arlington Heights, Skokie, Palatine, Des Plaines, Orland Park, Oak Lawn, Mount Prospect, Tinley Park, Berwyn, Oak Park, Hoffman Estates, Glenview, Buffalo Grove, Bartlett, Park Ridge, Wheeling, Streamwood, Hanover Park, Calumet City, Northbrook, Elk Grove Village, Niles, Burbank, Lansing, Wilmette, Oak Forest and Chicago Heights.
Sources: EIA-861 data, 2025 (utilities by county, homes and average bills); Census Bureau city population estimates, Vintage 2025; PVWatts (National Laboratory of the Rockies).