2020 Illinois Power Outage Report

In 2020, the average Illinois customer went without power for about 5.9 hours, the 22nd worst of 51 states (US average 8.0 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.

Avg hrs / customer

5.9

vs prior year

▲ 219%

vs 2019

Customer-hours out

34.8M

Peak customers out

756,576

across the state at once

EAGLE-I coverage

94%

of IL customers

Counties reporting

102

Illinois year over year

Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

Month by month, 2020

Customer-hours without power across Illinois; August was the worst.

CSV JSON

All 102 Illinois counties, 2020

Ranked by average hours without power per customer. Each county links to its annual report.

CSV JSON

#	County	Hrs / customer	Customer-hours	Customers	Peak out	Events
1	Putnam County	39.5	99K	2,501	2,501	228
2	Rock Island County	29.8	2.5M	83,685	56,765	934
3	Whiteside County	22.5	989K	44,026	17,218	506
4	LaSalle County	21.7	1.4M	63,017	30,069	826
5	Carroll County	17.5	129K	7,336	4,732	273
6	Bureau County	15.3	286K	18,642	7,252	543
7	Will County	15.0	4.5M	299,468	98,024	847
8	Mercer County	14.8	132K	8,972	2,186	503
9	Kankakee County	13.6	1.2M	85,550	26,788	768
10	Ogle County	12.4	521K	42,029	12,845	460
11	Lawrence County	12.2	95K	7,796	4,876	346
12	Marshall County	11.3	90K	7,906	1,660	332
13	Winnebago County	9.6	1.2M	120,789	24,445	976
14	Henry County	9.3	382K	40,978	6,594	574
15	Lee County	8.8	226K	25,665	5,925	442
16	Shelby County	8.7	50K	5,708	3,135	375
17	Livingston County	8.5	213K	25,191	3,706	500
18	Jo Daviess County	8.2	30K	3,617	3,170	318
19	Crawford County	8.1	83K	10,220	4,016	390
20	Stephenson County	8.1	99K	12,248	2,781	450
21	Jasper County	7.7	35K	4,528	2,118	265
22	Logan County	7.7	84K	10,899	10,899	468
23	Stark County	7.6	24K	3,173	672	224
24	Henderson County	7.5	25K	3,381	1,261	181
25	Fayette County	7.2	52K	7,295	2,883	499
26	DuPage County	6.7	2.1M	313,751	64,595	943
27	Cumberland County	6.7	33K	4,929	2,362	345
28	Saline County	6.2	81K	12,967	1,208	577
29	Monroe County	6.2	96K	15,588	3,730	300
30	Grundy County	6.1	264K	43,433	4,067	447
31	Knox County	5.7	148K	25,998	5,061	739
32	Cook County	5.6	12.1M	2,162,007	279,858	201
33	Hamilton County	5.6	26K	4,619	779	176
34	Washington County	4.9	36K	7,318	1,381	389
35	Douglas County	4.8	40K	8,333	3,015	329
36	Clinton County	4.8	60K	12,465	12,244	568
37	Clark County	4.6	36K	7,829	2,376	307
38	Piatt County	4.6	28K	6,148	2,268	372
39	Ford County	4.6	25K	5,462	1,619	333
40	Macon County	4.6	205K	45,051	7,108	821
41	Kane County	4.4	558K	127,850	15,376	1,026
42	De Witt County	4.3	29K	6,665	2,413	328
43	Boone County	4.2	89K	20,979	2,437	328
44	Iroquois County	4.0	40K	10,038	3,751	442
45	Marion County	3.9	60K	15,234	3,500	700
46	Peoria County	3.9	535K	137,518	12,327	797
47	St. Clair County	3.9	366K	94,355	6,055	725
48	Woodford County	3.8	91K	24,080	3,190	498
49	Brown County	3.5	11K	3,007	1,885	77
50	Macoupin County	3.5	54K	15,453	3,401	630
51	McHenry County	3.4	404K	120,381	18,037	927
52	Gallatin County	3.2	7,917	2,453	2,102	236
53	Fulton County	3.2	42K	12,940	1,639	399
54	Warren County	3.2	26K	8,244	1,107	225
55	Montgomery County	3.1	32K	10,344	5,667	459
56	Perry County	3.1	37K	11,975	1,833	375
57	Pike County	3.0	21K	6,793	4,777	275
58	Franklin County	3.0	58K	19,260	6,694	652
59	DeKalb County	2.9	230K	79,682	10,587	565
60	Edgar County	2.8	24K	8,690	3,744	378
61	Madison County	2.7	291K	107,855	10,333	826
62	Bond County	2.7	15K	5,736	3,342	351
63	Randolph County	2.6	39K	14,970	1,125	479
64	Pope County	2.6	4,832	1,842	558	229
65	Coles County	2.6	64K	24,455	3,893	641
66	Jersey County	2.5	19K	7,718	2,090	444
67	Edwards County	2.5	10K	4,061	671	209
68	Champaign County	2.5	224K	90,035	5,692	868
69	Tazewell County	2.5	200K	80,878	3,552	825
70	Hardin County	2.3	4,397	1,910	425	242
71	Jefferson County	2.3	52K	22,670	3,056	689
72	Moultrie County	2.3	15K	6,492	2,368	220
73	Jackson County	2.3	61K	26,616	3,753	739
74	McLean County	2.2	184K	81,860	6,980	874
75	Johnson County	2.0	13K	6,500	1,265	332
76	Adams County	1.9	60K	31,760	6,772	716
77	Christian County	1.9	26K	13,660	791	429
78	Morgan County	1.8	30K	16,522	1,572	414
79	Kendall County	1.8	169K	92,751	7,530	527
80	Alexander County	1.8	4,975	2,842	549	63
81	White County	1.7	16K	8,994	824	263
82	Schuyler County	1.7	4,763	2,847	840	195
83	Union County	1.7	17K	10,277	4,813	197
84	Vermilion County	1.6	74K	46,373	3,859	800
85	Mason County	1.5	7,398	4,847	453	234
86	Hancock County	1.5	14K	9,010	897	295
87	Effingham County	1.4	20K	14,830	1,385	467
88	Richland County	1.2	11K	9,109	708	362
89	Lake County	1.2	687K	581,008	28,909	1,061
90	Calhoun County	1.1	2,132	1,865	300	64
91	Menard County	1.0	4,265	4,167	339	162
92	Pulaski County	1.0	3,257	3,212	874	101
93	Williamson County	1.0	36K	35,624	2,263	808
94	Sangamon County	1.0	135K	138,475	3,181	837
95	Cass County	0.9	5,707	6,087	1,248	186
96	Scott County	0.9	1,881	2,163	451	62
97	Greene County	0.8	3,934	5,200	563	164
98	Wayne County	0.7	7,349	10,404	810	219
99	Clay County	0.6	5,480	9,085	1,002	167
100	McDonough County	0.4	5,350	12,745	630	230
101	Wabash County	0.2	1,715	9,760	329	62
102	Massac County	0.2	1,344	8,175	711	76

Biggest Illinois outages of 2020

Up to 25 county outage episodes with the most customers out at once.

CSV JSON

#	County	Started (UTC)	Ended (UTC)	Duration	Peak out	Customer-hours
1	Cook County, IL	August 5, 2020 10:30	September 14, 2020 05:15	39d 18h	279,858	10.2M
2	Will County, IL	August 10, 2020 10:30	August 18, 2020 05:15	7d 18h	98,024	4.0M
3	DuPage County, IL	August 10, 2020 10:15	August 17, 2020 06:45	6d 20h	64,595	1.8M
4	Rock Island County, IL	August 10, 2020 19:00	August 19, 2020 08:00	8d 13h	56,765	2.1M
5	Cook County, IL	June 8, 2020 04:45	July 12, 2020 09:45	34d 5h	31,346	644K
6	LaSalle County, IL	August 10, 2020 19:45	August 17, 2020 05:30	6d 9h	30,069	1.2M
7	Rock Island County, IL	July 12, 2020 00:15	July 14, 2020 00:00	1d 23h	29,421	241K
8	Lake County, IL	August 10, 2020 10:15	August 14, 2020 05:30	3d 19h	28,909	427K
9	Kankakee County, IL	August 10, 2020 21:30	August 17, 2020 07:30	6d 10h	26,788	1.1M
10	Winnebago County, IL	August 10, 2020 19:15	August 16, 2020 06:30	5d 11h	24,445	901K
11	Will County, IL	May 23, 2020 20:30	May 26, 2020 07:45	2d 11h	22,067	214K
12	McHenry County, IL	August 10, 2020 13:30	August 16, 2020 00:30	5d 11h	18,037	282K
13	Whiteside County, IL	August 10, 2020 18:45	August 16, 2020 23:00	6d 4h	17,218	916K
14	Cook County, IL	July 13, 2020 07:30	July 26, 2020 08:00	13d	15,705	151K
15	Kane County, IL	July 9, 2020 22:30	July 11, 2020 08:30	1d 10h	15,376	206K
16	Ogle County, IL	November 10, 2020 21:30	November 12, 2020 08:00	1d 10h	12,845	116K
17	Peoria County, IL	July 11, 2020 20:00	July 14, 2020 11:45	2d 15h	12,327	140K
18	Clinton County, IL	November 15, 2020 13:00	November 15, 2020 23:15	10h 15m	12,244	30K
19	Ogle County, IL	August 10, 2020 19:45	August 16, 2020 02:45	5d 7h	11,576	343K
20	Winnebago County, IL	November 10, 2020 21:45	November 13, 2020 11:15	2d 13h	11,519	151K
21	Logan County, IL	April 8, 2020 21:15	April 13, 2020 15:15	4d 18h	10,899	67K
22	DeKalb County, IL	August 10, 2020 20:30	August 15, 2020 03:45	4d 7h	10,587	160K
23	Kane County, IL	August 10, 2020 19:15	August 15, 2020 10:15	4d 15h	10,529	194K
24	Madison County, IL	July 15, 2020 12:30	July 17, 2020 10:30	1d 22h	10,333	86K
25	Lake County, IL	July 9, 2020 13:00	July 11, 2020 07:45	1d 18h	10,191	53K

EAGLE-I tracked about 94% of Illinois's electricity customers in 2020; outages at utilities it does not see are not counted. Hours per customer divide outage customer-minutes by modeled county customers.

Illinois by year:2025 2024 2023 2022 2021 2019 2018 2017 2016 2015

Other states in 2020:LA ME OK IA AL MS NJ NC

Part of the 2020 US Power Outage Report.

Data from DOE EAGLE-I, every source we read.