– 0 customers out in Illinois
Power outage history
Illinois
2.9hours
without power for the average customer in a typical year, 2018–2025. 41st of 51.
Electricity customers 6,010,660 Across 102 counties
Worst well-recorded year 2020 5.8 hours without power, average customer
County by county
Where Illinois goes dark
Hours without power for the average customer in a typical year. Hover a county; click to open it.
Fewer hours64+ h / yr
Year by year
Hours in the dark, statewide
The record
Illinois's largest outages
Statewide events with at least 2% of customers, or 25,000, out at once, by peak.
| Began | Storm | Peak out | Share |
|---|---|---|---|
| Aug 10, 2020 | Thunderstorms | 756,576 | 12.6% |
| Jul 15, 2024 | Thunderstorms | 391,133 | 6.5% |
| Jun 29, 2023 | Thunderstorms | 231,479 | 3.9% |
| Aug 10, 2021 | Thunderstorms | 196,489 | 3.3% |
| Nov 26, 2018 | Winter storm | 195,419 | 3.3% |
| Aug 11, 2021 | Thunderstorms | 131,690 | 2.2% |
Every county
All 102 counties
| County | Hours / yr | Major outages since 2018 | Customers |
|---|---|---|---|
| Mercer | 17 | 43 | 8,972 |
| Putnam | 15 | 47 | 2,501 |
| Gallatin | 12 | 56 | 2,453 |
| Stark | 12 | 33 | 3,173 |
| Shelby | 11 | 48 | 5,708 |
| De Witt | 11 | 47 | 6,665 |
| Edgar | 9.9 | 25 | 8,690 |
| Scott | 9.6 | 48 | 2,163 |
| Henderson | 9.2 | 46 | 3,381 |
| Washington | 8.9 | 29 | 7,318 |
| Marshall | 8.8 | 24 | 7,906 |
| Fayette | 8.2 | 44 | 7,295 |
| Pope | 7.9 | 35 | 1,842 |
| Saline | 7.7 | 19 | 12,967 |
| Monroe | 7.3 | 13 | 15,588 |
| Stephenson | 7.2 | 18 | 12,248 |
| Hardin | 7.0 | 30 | 1,910 |
| Douglas | 6.9 | 28 | 8,333 |
| Logan | 6.9 | 25 | 10,899 |
| Christian | 6.7 | 17 | 13,660 |
| Piatt | 6.6 | 27 | 6,148 |
| Clark | 6.3 | 27 | 7,829 |
| Rock Island | 6.3 | 6 | 83,685 |
| Calhoun | 6.1 | 66 | 1,865 |
| Franklin | 6.1 | 29 | 19,260 |
| Marion | 6.0 | 22 | 15,234 |
| Bond | 5.9 | 42 | 5,736 |
| Carroll | 5.9 | 22 | 7,336 |
| Vermilion | 5.8 | 7 | 46,373 |
| Bureau | 5.8 | 11 | 18,642 |
| Crawford | 5.8 | 29 | 10,220 |
| Knox | 5.7 | 10 | 25,998 |
| Macon | 5.7 | 10 | 45,051 |
| Jefferson | 5.6 | 23 | 22,670 |
| Perry | 5.6 | 16 | 11,975 |
| Morgan | 5.4 | 12 | 16,522 |
| Warren | 5.4 | 35 | 8,244 |
| Lawrence | 5.4 | 24 | 7,796 |
| Hancock | 5.3 | 15 | 9,010 |
| St. Clair | 5.3 | 4 | 94,355 |
| LaSalle | 5.2 | 4 | 63,017 |
| Clinton | 5.0 | 21 | 12,465 |
| Macoupin | 5.0 | 19 | 15,453 |
| Brown | 4.9 | 24 | 3,007 |
| Johnson | 4.9 | 25 | 6,500 |
| Jasper | 4.9 | 37 | 4,528 |
| Lee | 4.8 | 10 | 25,665 |
| Cumberland | 4.7 | 24 | 4,929 |
| Madison | 4.5 | 7 | 107,855 |
| Montgomery | 4.5 | 21 | 10,344 |
| Randolph | 4.4 | 18 | 14,970 |
| Jo Daviess | 4.3 | 19 | 11,242 |
| Alexander | 4.3 | 28 | 2,842 |
| Williamson | 4.2 | 15 | 35,624 |
| Iroquois | 4.2 | 25 | 10,038 |
| Pike | 4.2 | 37 | 6,793 |
| Winnebago | 4.0 | 4 | 120,789 |
| McHenry | 4.0 | 5 | 120,381 |
| Whiteside | 4.0 | 1 | 44,026 |
| Ford | 3.8 | 27 | 5,462 |
| Jackson | 3.7 | 18 | 26,616 |
| Fulton | 3.7 | 16 | 12,940 |
| Will | 3.7 | 2 | 299,468 |
| Henry | 3.5 | 3 | 40,978 |
| Union | 3.4 | 28 | 10,277 |
| Sangamon | 3.4 | 1 | 138,475 |
| Champaign | 3.3 | 2 | 90,035 |
| Kankakee | 3.3 | 3 | 85,550 |
| Jersey | 3.3 | 17 | 7,718 |
| Ogle | 3.2 | 4 | 42,029 |
| Woodford | 3.1 | 14 | 24,080 |
| Pulaski | 3.1 | 39 | 3,212 |
| Mason | 3.1 | 18 | 4,847 |
| Boone | 3.0 | 5 | 20,979 |
| Tazewell | 2.9 | 3 | 80,878 |
| Livingston | 2.8 | 9 | 25,191 |
| McDonough | 2.7 | 7 | 12,745 |
| Peoria | 2.7 | 0 | 137,518 |
| DuPage | 2.7 | 1 | 313,751 |
| Hamilton | 2.6 | 10 | 4,619 |
| Moultrie | 2.5 | 15 | 6,492 |
| McLean | 2.5 | 1 | 81,860 |
| Grundy | 2.3 | 4 | 43,433 |
| Coles | 2.3 | 10 | 24,455 |
| Greene | 2.2 | 18 | 5,200 |
| Kane | 2.2 | 1 | 199,036 |
| Wayne | 2.2 | 16 | 10,404 |
| Cook | 2.1 | 7 | 2,162,007 |
| Schuyler | 2.1 | 19 | 2,847 |
| Effingham | 2.1 | 11 | 14,830 |
| Richland | 2.1 | 9 | 9,109 |
| Adams | 2.1 | 13 | 31,760 |
| Menard | 2.0 | 14 | 4,167 |
| Edwards | 1.9 | 19 | 4,061 |
| White | 1.8 | 8 | 8,994 |
| Clay | 1.6 | 8 | 9,085 |
| DeKalb | 1.4 | 1 | 79,682 |
| Cass | 1.3 | 19 | 6,087 |
| Kendall | 1.0 | 2 | 92,751 |
| Lake | 1.0 | 0 | 581,008 |
| Massac | 0.8 | 1 | 8,175 |
| Wabash | 0.4 | 0 | 9,760 |
Who keeps the lights on
Utilities in Illinois
Reliability and residential price as reported to the EIA for the latest year. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | ¢/kWh | Customers |
|---|---|---|---|---|---|
| Commonwealth Edison Co | Investor Owned | 77 | 38 | 17.7 | 3.8M |
| Ameren Illinois Company | Investor Owned | 287 | 130 | 16.7 | 1.1M |
| MidAmerican Energy Co | Investor Owned | 304 | 143 | 10.0 | 73k |
| City of Springfield | Municipal | 71 | 71 | 13.1 | 59k |
| City of Naperville | Municipal | 20 | – | 14.6 | 57k |
| Sunrun Inc. | Behind the Meter | – | – | 17.0 | 38k |
| Corn Belt Energy Corporation | Cooperative | 1,365 | 155 | 15.6 | 35k |
| Southwestern Electric Coop Inc | Cooperative | 241 | 195 | 15.4 | 24k |
| Southeastern IL Elec Coop, Inc | Cooperative | 2,214 | 172 | 14.8 | 23k |
| Norris Electric Coop | Cooperative | – | – | 15.1 | 18k |
| Jo-Carroll Energy, Inc | Cooperative | 138 | 37 | 20.5 | 17k |
| Tri-County Electric Coop, Inc (IL) | Cooperative | 132 | 63 | 16.2 | 16k |
| City of St Charles | Municipal | 46 | 2 | 14.6 | 15k |
| Egyptian Electric Coop Assn | Cooperative | 773 | 24 | 16.2 | 14k |
| Wayne-White Counties Elec Coop | Cooperative | – | – | 16.4 | 12k |
| Eastern Illinois Elec Coop | Cooperative | 223 | 157 | 17.7 | 11k |
| City of Batavia | Municipal | 91 | 47 | 14.0 | 10k |
| Shelby Electric Coop, Inc | Cooperative | – | – | 21.5 | 9.9k |
| Rock Energy Cooperative | Cooperative | 16 | 15 | 14.9 | 9.4k |
| Menard Electric Coop | Cooperative | 186 | 161 | 19.4 | 9.0k |
| City of Geneva | Municipal | 39 | 39 | 11.7 | 8.7k |
| Coles-Moultrie Electric Coop | Cooperative | – | – | 17.6 | 8.5k |
| Rochelle Municipal Utilities | Municipal | 90 | – | 13.1 | 6.0k |
| City of Peru | Municipal | – | – | 12.5 | 4.8k |
| Mt Carmel Public Utility Co | Investor Owned | 86 | 82 | 19.7 | 4.3k |
| Palmetto Solar, LLC | Behind the Meter | – | – | 13.7 | 4.1k |