Electricity in McHenry County, Illinois
5 electric utilities serve homes in McHenry County, Illinois: ComEd, City of St Charles, City of Batavia, Rock Energy Cooperative and City of Geneva. In 2025, the average home bill of these utilities was $89.89 (City of Geneva) to $113.26 (Rock Energy Cooperative) a month. This page covers 6 cities with 25,000 or more people in the county, from Crystal Lake to Woodstock.
- 6 cities
- 5 utilities
- EIA and Census data, 2025
Electric utilities in McHenry 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¢ | — |
| City of St CharlesCity utility | 14,901 | $103.61711 kWh, 14.6¢ | — |
| City of BataviaCity utility | 10,072 | $104.92747 kWh, 14.0¢ | — |
| Rock Energy CooperativeElectric cooperative | 9,421 | $113.26762 kWh, 14.9¢ | — |
| City of GenevaCity utility | 8,675 | $89.89770 kWh, 11.7¢ | — |
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 McHenry County
| City | People | City-owned utility | Solar kWh a year per kW |
|---|---|---|---|
| Crystal Lake | 42,288 | — | 1,334 |
| Algonquin | 30,824 | — | 1,340 |
| McHenry | 29,217 | — | 1,342 |
| Huntley | 29,132 | — | 1,336 |
| Lake in the Hills | 28,590 | — | 1,338 |
| Woodstock | 25,740 | — | 1,343 |
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 McHenry County?
5 electric utilities serve homes in McHenry County, Illinois: ComEd, City of St Charles, City of Batavia, Rock Energy Cooperative and City of Geneva. The name of your utility is on your bill.
Which cities in McHenry County are on this page?
Crystal Lake, Algonquin, McHenry, Huntley, Lake in the Hills and Woodstock.
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).