2021 Illinois Power Outage Report
In 2021, the average Illinois customer went without power for about 2.3 hours, the 41st worst of 51 states (US average 8.4 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.
Avg hrs / customer
2.3
vs prior year
▼ 61%
vs 2020
Customer-hours out
13.7M
Peak customers out
196,489
across the state at once
EAGLE-I coverage
98%
of IL customers
Counties reporting
102
Illinois year over year
All 102 Illinois counties, 2021
Ranked by average hours without power per customer. Each county links to its annual report.
| # | County | Hrs / customer | Customer-hours | Customers | Peak out | Events |
|---|---|---|---|---|---|---|
| 1 | Shelby County | 13.6 | 78K | 5,708 | 2,222 | 375 |
| 2 | De Witt County | 13.4 | 89K | 6,665 | 3,006 | 362 |
| 3 | Henderson County | 12.8 | 43K | 3,381 | 2,600 | 194 |
| 4 | Putnam County | 9.3 | 23K | 2,501 | 2,361 | 227 |
| 5 | Pope County | 8.8 | 16K | 1,842 | 597 | 148 |
| 6 | Calhoun County | 8.1 | 15K | 1,865 | 861 | 96 |
| 7 | McHenry County | 7.9 | 954K | 120,381 | 30,959 | 927 |
| 8 | Knox County | 7.2 | 187K | 25,998 | 5,388 | 692 |
| 9 | Christian County | 6.8 | 93K | 13,660 | 3,080 | 456 |
| 10 | Fayette County | 6.8 | 49K | 7,295 | 1,264 | 485 |
| 11 | Stark County | 6.7 | 21K | 3,173 | 763 | 200 |
| 12 | Piatt County | 6.6 | 41K | 6,148 | 5,305 | 276 |
| 13 | Ford County | 6.4 | 35K | 5,462 | 2,167 | 268 |
| 14 | Fulton County | 6.2 | 80K | 12,940 | 3,557 | 413 |
| 15 | Mercer County | 5.8 | 52K | 8,972 | 5,250 | 445 |
| 16 | Logan County | 5.6 | 61K | 10,899 | 10,899 | 411 |
| 17 | Woodford County | 5.5 | 133K | 24,080 | 2,830 | 499 |
| 18 | McLean County | 5.5 | 449K | 81,860 | 6,823 | 881 |
| 19 | Jo Daviess County | 5.4 | 19K | 3,617 | 1,300 | 305 |
| 20 | Lee County | 5.2 | 134K | 25,665 | 9,310 | 483 |
| 21 | Tazewell County | 5.2 | 419K | 80,878 | 8,615 | 733 |
| 22 | Marion County | 5.0 | 76K | 15,234 | 8,582 | 694 |
| 23 | Warren County | 5.0 | 41K | 8,244 | 2,711 | 232 |
| 24 | Marshall County | 4.9 | 39K | 7,906 | 1,728 | 308 |
| 25 | Perry County | 4.6 | 55K | 11,975 | 2,568 | 399 |
| 26 | Iroquois County | 4.6 | 46K | 10,038 | 2,606 | 463 |
| 27 | Mason County | 4.3 | 21K | 4,847 | 914 | 224 |
| 28 | Clark County | 4.1 | 32K | 7,829 | 1,498 | 314 |
| 29 | Kane County | 3.9 | 503K | 127,850 | 23,054 | 1,107 |
| 30 | Cumberland County | 3.9 | 19K | 4,929 | 984 | 297 |
| 31 | St. Clair County | 3.8 | 361K | 94,355 | 28,422 | 774 |
| 32 | Edgar County | 3.8 | 33K | 8,690 | 3,848 | 362 |
| 33 | Macoupin County | 3.7 | 58K | 15,453 | 4,102 | 585 |
| 34 | Jefferson County | 3.7 | 84K | 22,670 | 12,259 | 653 |
| 35 | Moultrie County | 3.6 | 24K | 6,492 | 2,845 | 230 |
| 36 | Randolph County | 3.6 | 54K | 14,970 | 3,857 | 425 |
| 37 | Carroll County | 3.6 | 26K | 7,336 | 2,679 | 266 |
| 38 | Franklin County | 3.5 | 68K | 19,260 | 5,786 | 616 |
| 39 | Madison County | 3.4 | 367K | 107,855 | 11,767 | 856 |
| 40 | LaSalle County | 3.4 | 214K | 63,017 | 9,828 | 803 |
| 41 | Hardin County | 3.3 | 6,384 | 1,910 | 930 | 204 |
| 42 | Jackson County | 3.3 | 88K | 26,616 | 2,789 | 776 |
| 43 | Douglas County | 3.2 | 27K | 8,333 | 4,431 | 311 |
| 44 | Washington County | 3.1 | 23K | 7,318 | 2,286 | 437 |
| 45 | Morgan County | 3.1 | 52K | 16,522 | 1,841 | 421 |
| 46 | Coles County | 3.0 | 73K | 24,455 | 4,329 | 595 |
| 47 | Bond County | 2.9 | 17K | 5,736 | 3,369 | 337 |
| 48 | Livingston County | 2.9 | 74K | 25,191 | 1,476 | 517 |
| 49 | Macon County | 2.8 | 126K | 45,051 | 4,543 | 862 |
| 50 | Alexander County | 2.7 | 7,672 | 2,842 | 547 | 41 |
| 51 | Bureau County | 2.7 | 50K | 18,642 | 1,541 | 532 |
| 52 | Montgomery County | 2.7 | 28K | 10,344 | 5,299 | 419 |
| 53 | Menard County | 2.7 | 11K | 4,167 | 2,016 | 148 |
| 54 | Jersey County | 2.6 | 20K | 7,718 | 4,578 | 311 |
| 55 | Stephenson County | 2.6 | 32K | 12,248 | 1,839 | 486 |
| 56 | Peoria County | 2.6 | 357K | 137,518 | 5,834 | 667 |
| 57 | Gallatin County | 2.6 | 6,274 | 2,453 | 2,088 | 244 |
| 58 | Brown County | 2.3 | 7,032 | 3,007 | 1,425 | 89 |
| 59 | Hancock County | 2.3 | 21K | 9,010 | 2,400 | 246 |
| 60 | Johnson County | 2.3 | 15K | 6,500 | 1,271 | 248 |
| 61 | DuPage County | 2.2 | 694K | 313,751 | 19,497 | 967 |
| 62 | Henry County | 2.1 | 86K | 40,978 | 2,456 | 619 |
| 63 | Ogle County | 2.1 | 87K | 42,029 | 4,791 | 459 |
| 64 | Jasper County | 2.0 | 9,273 | 4,528 | 999 | 227 |
| 65 | Williamson County | 2.0 | 72K | 35,624 | 6,630 | 789 |
| 66 | Effingham County | 2.0 | 30K | 14,830 | 3,874 | 453 |
| 67 | Crawford County | 2.0 | 20K | 10,220 | 3,079 | 316 |
| 68 | Winnebago County | 2.0 | 239K | 120,789 | 7,882 | 1,059 |
| 69 | Lake County | 2.0 | 1.1M | 581,008 | 42,379 | 1,031 |
| 70 | Grundy County | 1.9 | 83K | 43,433 | 7,310 | 511 |
| 71 | Adams County | 1.9 | 61K | 31,760 | 5,567 | 210 |
| 72 | Pulaski County | 1.9 | 6,129 | 3,212 | 832 | 102 |
| 73 | Vermilion County | 1.9 | 87K | 46,373 | 5,360 | 781 |
| 74 | Pike County | 1.9 | 13K | 6,793 | 1,143 | 245 |
| 75 | Boone County | 1.8 | 39K | 20,979 | 1,777 | 388 |
| 76 | Rock Island County | 1.8 | 154K | 83,685 | 7,764 | 898 |
| 77 | Sangamon County | 1.7 | 237K | 138,475 | 12,454 | 839 |
| 78 | Clinton County | 1.7 | 21K | 12,465 | 503 | 612 |
| 79 | Cook County | 1.6 | 3.5M | 2,162,007 | 73,829 | 113 |
| 80 | Monroe County | 1.6 | 25K | 15,588 | 2,173 | 329 |
| 81 | White County | 1.6 | 14K | 8,994 | 1,944 | 268 |
| 82 | Union County | 1.6 | 16K | 10,277 | 4,694 | 180 |
| 83 | Champaign County | 1.6 | 141K | 90,035 | 2,689 | 879 |
| 84 | Richland County | 1.5 | 14K | 9,109 | 708 | 284 |
| 85 | Lawrence County | 1.5 | 12K | 7,796 | 726 | 306 |
| 86 | Scott County | 1.4 | 3,013 | 2,163 | 446 | 56 |
| 87 | DeKalb County | 1.4 | 110K | 79,682 | 6,262 | 643 |
| 88 | Cass County | 1.3 | 7,900 | 6,087 | 1,237 | 160 |
| 89 | Hamilton County | 1.3 | 5,993 | 4,619 | 355 | 179 |
| 90 | Edwards County | 1.3 | 5,204 | 4,061 | 930 | 170 |
| 91 | McDonough County | 1.2 | 16K | 12,745 | 4,126 | 244 |
| 92 | Will County | 1.2 | 372K | 299,468 | 8,355 | 949 |
| 93 | Greene County | 1.2 | 6,045 | 5,200 | 1,668 | 149 |
| 94 | Whiteside County | 1.0 | 46K | 44,026 | 864 | 473 |
| 95 | Kankakee County | 1.0 | 86K | 85,550 | 3,024 | 892 |
| 96 | Massac County | 0.9 | 7,462 | 8,175 | 756 | 45 |
| 97 | Clay County | 0.9 | 8,183 | 9,085 | 924 | 116 |
| 98 | Kendall County | 0.9 | 81K | 92,751 | 4,940 | 615 |
| 99 | Schuyler County | 0.7 | 2,098 | 2,847 | 1,065 | 87 |
| 100 | Wayne County | 0.7 | 7,503 | 10,404 | 1,742 | 208 |
| 101 | Saline County | 0.7 | 8,673 | 12,967 | 776 | 482 |
| 102 | Wabash County | 0.3 | 2,649 | 9,760 | 289 | 57 |
Biggest Illinois outages of 2021
Up to 25 county outage episodes with the most customers out at once.
| # | County | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|---|
| 1 | Cook County, IL | August 2, 2021 11:15 | August 23, 2021 10:45 | 20d 23h | 73,829 | 1.1M |
| 2 | Lake County, IL | August 10, 2021 16:45 | August 14, 2021 06:15 | 3d 13h | 42,379 | 765K |
| 3 | McHenry County, IL | August 10, 2021 09:15 | August 14, 2021 11:30 | 4d 2h | 30,959 | 753K |
| 4 | St. Clair County, IL | October 25, 2021 02:45 | October 26, 2021 04:15 | 1d 1h | 28,422 | 72K |
| 5 | Kane County, IL | August 9, 2021 13:30 | August 14, 2021 05:45 | 4d 16h | 23,054 | 331K |
| 6 | Cook County, IL | July 10, 2021 11:15 | August 2, 2021 09:30 | 22d 22h | 22,644 | 279K |
| 7 | Cook County, IL | October 24, 2021 11:45 | November 15, 2021 07:30 | 21d 19h | 20,640 | 280K |
| 8 | DuPage County, IL | February 18, 2021 15:30 | February 18, 2021 20:30 | 5h | 19,497 | 6,362 |
| 9 | Cook County, IL | December 9, 2021 13:15 | December 24, 2021 07:00 | 14d 17h | 17,712 | 226K |
| 10 | Cook County, IL | August 23, 2021 11:45 | September 19, 2021 10:00 | 26d 22h | 16,341 | 209K |
| 11 | Cook County, IL | May 20, 2021 10:00 | July 10, 2021 10:30 | 51d | 15,993 | 667K |
| 12 | Cook County, IL | March 29, 2021 10:30 | April 12, 2021 04:00 | 13d 17h | 15,418 | 87K |
| 13 | DuPage County, IL | June 20, 2021 05:00 | June 25, 2021 04:15 | 4d 23h | 15,340 | 211K |
| 14 | Sangamon County, IL | August 12, 2021 14:30 | August 14, 2021 02:00 | 1d 11h | 12,454 | 55K |
| 15 | Jefferson County, IL | February 16, 2021 12:45 | February 16, 2021 21:45 | 9h | 12,259 | 44K |
| 16 | Madison County, IL | December 11, 2021 02:45 | December 13, 2021 00:45 | 1d 22h | 11,767 | 103K |
| 17 | Logan County, IL | September 8, 2021 13:15 | September 8, 2021 17:00 | 3h 45m | 10,899 | 3,616 |
| 18 | DuPage County, IL | August 10, 2021 12:30 | August 14, 2021 04:45 | 3d 16h | 10,774 | 130K |
| 19 | LaSalle County, IL | August 11, 2021 00:15 | August 14, 2021 03:00 | 3d 2h | 9,828 | 122K |
| 20 | Lee County, IL | August 10, 2021 23:30 | August 14, 2021 03:15 | 3d 3h | 9,310 | 81K |
| 21 | Tazewell County, IL | June 19, 2021 01:15 | June 21, 2021 12:15 | 2d 11h | 8,615 | 81K |
| 22 | Marion County, IL | February 16, 2021 11:00 | February 16, 2021 23:00 | 12h | 8,582 | 36K |
| 23 | Lake County, IL | September 7, 2021 09:15 | September 9, 2021 06:45 | 1d 21h | 8,553 | 53K |
| 24 | Will County, IL | September 6, 2021 22:30 | September 9, 2021 10:15 | 2d 11h | 8,355 | 45K |
| 25 | Winnebago County, IL | August 10, 2021 14:00 | August 14, 2021 06:00 | 3d 16h | 7,882 | 94K |
EAGLE-I tracked about 98% of Illinois's electricity customers in 2021; outages at utilities it does not see are not counted. Hours per customer divide outage customer-minutes by modeled county customers.
Part of the 2021 US Power Outage Report.
Data from DOE EAGLE-I, every source we read.