City of St Charles electricity rates
Municipal utility · Illinois · RFC region · PJM
City of St Charles is a city-owned municipal utility, governed locally rather than by the state commission, serving 14,901 homes in Illinois. Its residential customers pay an average of 15.48¢/kWh including fixed and delivery charges, 14% less than the U.S. average.
Rate basis: EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend.
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City of St Charles bill estimates
| Monthly use | At average all-in rate |
|---|---|
| 500 kWh | $77.40 |
| 1,000 kWh | $154.80 |
| 1,500 kWh | $232.20 |
| 2,000 kWh | $309.60 |
City of St Charles residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Residentialtime-of-use | 2014-06-11 | $15.00 | 11.1¢ (12am–12am) — summer weekdays |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
City of St Charles rate history
2015–2025: +10% change in the average residential rate (13.26¢ → 14.58¢). Annual EIA-861 data.
Outages & reliability
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Checking live outages…
Reliability history
| 2025 | City of St Charles | Illinois avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 46 | 148 | 266 |
| Outages per customer (SAIFI) | 0.27 | 0.87 | 1.34 |
| Average restoration time (CAIDI) | 2 hr 51 min | — | — |
| Outage minutes excluding major storms | 2 | 63 | 121 |
Outages in counties served (2025)
From ORNL EAGLE-I, which tracks customers without power every 15 minutes. These counts cover every utility in each county. Weighted across City of St Charles's counties, customers averaged 2 hr 30 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Kane | 204 | 35 | 18,870 | 2025-08-16 |
| DuPage | 128 | 11 | 20,530 | 2025-08-08 |
City of St Charles service area
City of St Charles serves 2 counties in Illinois and 7 ZIP codes.
DuPage, Kane
Cities: Aurora, St. Charles, West Chicago, Geneva, Village of Campton Hills, Elburn, Wayne, Lily Lake
Programs, smart meters & solar
| Smart meters (AMI) for homes | 0% |
| Time-based rate programs | None reported |
| Net-metered solar homes | 51 |
| Home batteries paired with solar | 5 |
City of St Charles at a glance
| Ownership | Municipal utility |
| Services | Distribution |
| Commercial rate | 12.73¢/kWh |
| Industrial rate | 10.70¢/kWh |
| Retail revenue (2025) | $58,430,200 |
| Electricity sold (2025) | 490,002 MWh |
| Peak demand | 110 MW summer · 73 MW winter |
| Line losses | 1.5% |
| Balancing authority | PJM |
| EIA utility ID | 17860 |
Other utilities in Illinois
Frequently asked questions
What is City of St Charles's electricity rate?
City of St Charles residential customers pay an average of 15.48¢ per kWh, all charges included (EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend). That's 18% below the Illinois average of 18.79¢ and 14% below the U.S. average.
What is the average City of St Charles electric bill?
About $110 a month. The average City of St Charles home uses 711 kWh a month. At 1,000 kWh the bill would be about $155.
How many customers does City of St Charles have?
City of St Charles serves 14,901 residential customers and 17,027 customers in total in Illinois, across 2 counties.
How reliable is City of St Charles?
In 2025, the average City of St Charles customer was without power for 46 min (SAIDI) over 0.27 interruptions (SAIFI), including major storms. Excluding major event days it was 2 min. The Illinois average was 2 hr 28 min and the U.S. average 4 hr 26 min.
Does City of St Charles offer time-of-use rates?
Yes. The OpenEI rate database lists 1 time-of-use residential plan, including Residential. Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
Does City of St Charles offer net metering for solar?
City of St Charles had 51 residential net-metered customers in 2025 with 0.5 MW of capacity and 5 solar-paired batteries. Estimate solar savings at this utility's rate.
Sources: EIA-861 2025 and EIA-861M (through July 2026), OpenEI URDB, ORNL EAGLE-I, U.S. Census. Methodology. Spot an error? Rates change often, so confirm with City of St Charles before making decisions.