Commonwealth Edison Co. electricity rates
Investor-owned utility · Illinois · RFC region · PJM
Commonwealth Edison Co. is a for-profit, investor-owned utility regulated by the state utility commission, serving 3,020,130 homes in Illinois. Its residential customers pay an average of 19.23¢/kWh including fixed and delivery charges, 7% more than the U.S. average.
Rate basis: EIA-861M monthly utility data, 12 months ending 2026-07.
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Commonwealth Edison Co. bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $96.15 | $34.68 |
| 1,000 kWh | $192.30 | $57.41 |
| 1,500 kWh | $288.45 | $80.14 |
| 2,000 kWh | $384.60 | $102.87 |
*BESH- Residential Multi Family Without Electric Space Heat Delivery Class(Unbundled) (effective 2014-06-01, $11.95/month customer charge), energy and fixed charges from the OpenEI Utility Rate Database. Riders, fuel adjustments and taxes are often billed separately, so real bills usually land closer to the all-in column. Calculate your bill.
Commonwealth Edison Co. residential rate plans
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Commonwealth Edison Co. rate history
2015–2025: +34% change in the average residential rate (13.17¢ → 17.71¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2025 | Commonwealth Edison Co. | Illinois avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 77 | 148 | 266 |
| Outages per customer (SAIFI) | 0.66 | 0.87 | 1.34 |
| Average restoration time (CAIDI) | 116 min | — | — |
| Outage minutes excluding major storms | 38 | 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 Commonwealth Edison Co.'s counties, customers averaged 88 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Jo Daviess | 554 | 30 | 1,814 | 2025-07-12 |
| Boone | 381 | 29 | 7,254 | 2025-08-16 |
| Carroll | 243 | 16 | 2,240 | 2025-11-26 |
| Kane | 204 | 35 | 18,870 | 2025-08-16 |
| McHenry | 181 | 30 | 13,250 | 2025-08-17 |
| Marshall | 164 | 30 | 817 | 2025-07-25 |
| Woodford | 156 | 33 | 3,382 | 2025-10-07 |
| Stephenson | 139 | 44 | 1,808 | 2025-07-30 |
| Ford | 134 | 18 | 2,055 | 2025-06-18 |
| LaSalle | 132 | 33 | 6,369 | 2025-03-12 |
| DuPage | 128 | 11 | 20,530 | 2025-08-08 |
| Bureau | 124 | 29 | 1,099 | 2025-03-15 |
| Will | 110 | 13 | 14,999 | 2025-08-17 |
| Winnebago | 97 | 23 | 8,091 | 2025-03-15 |
| Livingston | 84 | 31 | 3,084 | 2025-05-20 |
| Cook | 83 | 7 | 63,645 | 2025-05-16 |
| Grundy | 65 | 13 | 1,309 | 2025-08-17 |
| Lee | 61 | 22 | 8,245 | 2025-09-29 |
| Kendall | 61 | 20 | 4,737 | 2025-08-17 |
| Ogle | 51 | 15 | 2,293 | 2025-02-17 |
| Whiteside | 49 | 22 | 3,483 | 2025-04-29 |
| Kankakee | 34 | 16 | 2,175 | 2025-12-29 |
| DeKalb | 34 | 16 | 2,327 | 2025-08-19 |
| Lake | 28 | 2 | 8,580 | 2025-08-17 |
Commonwealth Edison Co. service area
Commonwealth Edison Co. serves 24 counties in Illinois and 592 ZIP codes.
Boone, Bureau, Carroll, Cook, DeKalb, DuPage, Ford, Grundy, Jo Daviess, Kane, Kankakee, Kendall, LaSalle, Lake, Lee, Livingston, Marshall, McHenry, Ogle, Stephenson, Whiteside, Will, Winnebago, Woodford
Cities: Chicago, Aurora, Rockford, Joliet, Naperville, Springfield, Elgin, Waukegan, Cicero, Arlington Heights, Evanston, Schaumburg, Bolingbrook, Palatine, Skokie, Des Plaines, Orland Park, Tinley Park, Oak Lawn, Berwyn, Mount Prospect, Wheaton, Oak Park, Hoffman Estates, Downers Grove, Glenview, Elmhurst, Lombard, DeKalb, Plainfield, Bartlett, Buffalo Grove, Streamwood, Crystal Lake, Carol Stream, Romeoville, Carpentersville, Hanover Park, Wheeling, Park Ridge
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Time-based rate programs | Real-time pricing, Peak-time rebates |
| Homes on time-based rates | 382,255 |
| Net-metered solar homes | 111,683 |
| Homes in demand response (e.g. thermostat rebates) | 389,841 |
| Residential efficiency incentives paid (2025) | $112,687,684 |
| Residential energy saved by programs | 2,007,374 MWh |
Commonwealth Edison Co. at a glance
| Ownership | Investor-owned utility |
| Services | Transmission, Distribution, Bundled |
| Commercial rate | 16.07¢/kWh |
| Industrial rate | 9.50¢/kWh |
| Retail revenue (2025) | $5,329,180,000 |
| Electricity sold (2025) | 32,164,135 MWh |
| Peak demand | 20,714 MW summer · 15,183 MW winter |
| Line losses | 4.7% |
| Balancing authority | PJM |
| EIA utility ID | 4110 |
| Website | www.ilsag.info/evaluation-documents.html |
Other utilities in Illinois
Frequently asked questions
What is Commonwealth Edison Co.'s electricity rate?
Commonwealth Edison Co. residential customers pay an average of 19.23¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 2% above the Illinois average of 18.79¢ and 7% above the U.S. average.
What is the average Commonwealth Edison Co. electric bill?
About $117 a month. The average Commonwealth Edison Co. home uses 606 kWh a month. At 1,000 kWh the bill would be about $192.
How many customers does Commonwealth Edison Co. have?
Commonwealth Edison Co. serves 3,020,130 residential customers and 4,158,413 customers in total in Illinois, across 24 counties.
How reliable is Commonwealth Edison Co.?
In 2025, the average Commonwealth Edison Co. customer was without power for 77 min (SAIDI) over 0.66 interruptions (SAIFI), including major storms. Excluding major event days it was 38 min. The Illinois average was 2 hr 28 min and the U.S. average 4 hr 26 min.
Does Commonwealth Edison Co. offer time-of-use rates?
Yes. The OpenEI rate database lists 8 time-of-use residential plans, including RDS - Residential Single Family with Electric Space Heat Delivery Class. Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
Does Commonwealth Edison Co. offer net metering for solar?
Commonwealth Edison Co. had 111,683 residential net-metered customers in 2025 with 715.3 MW of capacity. 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 Commonwealth Edison Co. before making decisions.