2021 Iowa Power Outage Report

In 2021, the average Iowa customer went without power for about 2.7 hours, the 35th worst of 51 states (US average 8.4 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.

Avg hrs / customer

2.7

vs prior year

▼ 90%

vs 2020

Customer-hours out

4.3M

Peak customers out

146,396

across the state at once

EAGLE-I coverage

91%

of IA customers

Counties reporting

Iowa year over year

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

Month by month, 2021

Customer-hours without power across Iowa; December was the worst.

CSV JSON

All 99 Iowa counties, 2021

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	Greene County	39.9	136K	3,417	3,361	263
2	Howard County	21.6	90K	4,177	4,177	317
3	Worth County	18.7	43K	2,289	2,289	261
4	Wright County	17.4	96K	5,538	5,538	297
5	Calhoun County	15.2	62K	4,092	2,353	134
6	Fremont County	14.0	60K	4,285	2,320	188
7	Mills County	12.5	91K	7,270	5,353	292
8	Franklin County	12.2	57K	4,637	3,537	212
9	Winneshiek County	11.5	108K	9,369	5,083	335
10	Appanoose County	10.4	68K	6,572	5,385	343
11	Mitchell County	10.3	66K	6,347	2,842	248
12	Page County	9.9	90K	9,035	4,004	223
13	Ringgold County	8.7	22K	2,511	936	259
14	Iowa County	8.5	60K	6,965	6,623	437
15	Butler County	8.5	41K	4,791	1,928	170
16	Sac County	8.5	33K	3,895	2,274	132
17	Adams County	7.9	15K	1,844	584	175
18	Fayette County	7.7	67K	8,712	3,011	430
19	Monroe County	7.7	31K	4,056	1,014	285
20	Floyd County	7.4	58K	7,886	2,161	224
21	Pottawattamie County	6.6	335K	51,132	12,888	810
22	Guthrie County	6.1	33K	5,390	2,666	201
23	Boone County	6.0	64K	10,670	2,644	534
24	Humboldt County	6.0	21K	3,507	2,848	183
25	Wayne County	5.9	17K	2,947	1,144	179
26	Webster County	5.6	115K	20,411	3,269	372
27	Cerro Gordo County	5.6	165K	29,435	13,943	560
28	Allamakee County	5.6	38K	6,750	2,648	170
29	Winnebago County	5.5	40K	7,213	3,317	304
30	Poweshiek County	5.4	36K	6,708	2,518	381
31	Audubon County	5.3	13K	2,511	1,113	124
32	Jasper County	5.2	81K	15,566	6,920	472
33	Chickasaw County	4.7	33K	6,991	1,141	176
34	Keokuk County	4.6	22K	4,684	2,074	367
35	Hamilton County	4.3	39K	9,205	1,621	197
36	Woodbury County	4.1	105K	25,626	4,652	727
37	Washington County	3.9	38K	9,700	3,147	450
38	Grundy County	3.8	21K	5,507	1,846	208
39	Van Buren County	3.8	12K	3,146	733	229
40	Tama County	3.7	31K	8,169	3,296	353
41	Delaware County	3.6	25K	7,035	2,014	303
42	Palo Alto County	3.5	15K	4,166	2,263	148
43	Louisa County	3.2	15K	4,554	1,406	376
44	Pocahontas County	3.1	9,696	3,159	638	132
45	Montgomery County	3.0	17K	5,724	4,346	200
46	Hancock County	3.0	17K	5,489	994	287
47	Buchanan County	2.9	36K	12,254	1,194	320
48	Cherokee County	2.9	17K	5,968	1,772	126
49	Lucas County	2.9	12K	4,225	948	263
50	Jefferson County	2.7	19K	6,879	1,317	392
51	Union County	2.7	18K	6,645	946	305
52	Clarke County	2.7	11K	4,290	907	250
53	Decatur County	2.6	8,682	3,356	326	198
54	O'Brien County	2.5	13K	5,030	864	184
55	Hardin County	2.4	16K	6,885	2,872	301
56	Ida County	2.3	7,565	3,231	968	124
57	Taylor County	2.3	6,814	2,951	785	186
58	Des Moines County	2.1	38K	18,207	4,966	601
59	Clinton County	2.0	44K	21,505	3,403	679
60	Jones County	2.0	17K	8,507	3,110	308
61	Davis County	2.0	9,384	4,718	563	122
62	Carroll County	1.9	16K	8,666	1,495	179
63	Shelby County	1.9	13K	7,164	638	277
64	Cedar County	1.9	17K	8,986	1,512	381
65	Lee County	1.9	29K	15,486	3,262	601
66	Plymouth County	1.9	16K	8,581	1,387	255
67	Scott County	1.9	125K	67,611	7,465	973
68	Benton County	1.9	25K	13,498	1,618	434
69	Warren County	1.8	44K	23,806	3,515	441
70	Mahaska County	1.7	14K	8,162	2,450	295
71	Dickinson County	1.7	11K	6,731	1,479	299
72	Henry County	1.7	20K	11,923	1,021	315
73	Wapello County	1.6	36K	21,960	4,365	584
74	Bremer County	1.6	26K	16,028	1,615	207
75	Marion County	1.6	32K	19,876	1,590	233
76	Marshall County	1.6	25K	15,945	992	466
77	Harrison County	1.6	12K	7,620	625	246
78	Cass County	1.6	16K	10,329	1,135	145
79	Johnson County	1.5	119K	77,769	5,738	717
80	Buena Vista County	1.5	18K	11,607	1,145	173
81	Monona County	1.4	11K	7,388	940	73
82	Emmet County	1.3	7,671	5,934	1,112	88
83	Black Hawk County	1.1	65K	57,533	2,798	661
84	Clayton County	1.1	11K	10,421	1,410	117
85	Linn County	1.1	126K	118,247	6,359	869
86	Polk County	1.1	303K	287,095	9,343	937
87	Story County	1.0	66K	63,396	3,778	546
88	Dubuque County	1.0	47K	46,546	3,277	613
89	Dallas County	1.0	59K	58,451	4,704	572
90	Jackson County	0.9	9,300	10,302	488	232
91	Madison County	0.9	8,060	9,366	519	274
92	Muscatine County	0.9	26K	30,353	617	409
93	Lyon County	0.8	3,952	5,090	370	97
94	Adair County	0.7	2,697	3,686	614	205
95	Crawford County	0.7	6,575	9,213	706	106
96	Sioux County	0.7	12K	16,993	791	228
97	Kossuth County	0.5	4,029	7,698	426	130
98	Osceola County	0.5	1,742	3,588	1,063	36
99	Clay County	0.3	3,707	13,668	312	151

Biggest Iowa outages of 2021

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	Cerro Gordo County, IA	December 16, 2021 01:00	December 21, 2021 03:15	5d 2h	13,943	129K
2	Pottawattamie County, IA	July 10, 2021 05:15	July 19, 2021 16:00	9d 10h	12,888	189K
3	Polk County, IA	December 15, 2021 15:30	December 19, 2021 00:45	3d 9h	9,343	54K
4	Polk County, IA	August 31, 2021 04:45	September 1, 2021 07:00	1d 2h	8,325	24K
5	Polk County, IA	June 20, 2021 10:00	June 22, 2021 04:30	1d 18h	7,917	16K
6	Pottawattamie County, IA	December 15, 2021 20:30	December 19, 2021 12:15	3d 15h	7,608	74K
7	Scott County, IA	August 11, 2021 13:15	August 13, 2021 02:30	1d 13h	7,465	29K
8	Cerro Gordo County, IA	August 27, 2021 20:30	August 28, 2021 08:00	11h 30m	7,327	11K
9	Jasper County, IA	December 16, 2021 00:45	December 18, 2021 18:45	2d 18h	6,920	48K
10	Iowa County, IA	December 16, 2021 02:15	December 20, 2021 19:00	4d 16h	6,623	29K
11	Linn County, IA	December 16, 2021 01:15	December 17, 2021 03:30	1d 2h	6,359	16K
12	Polk County, IA	January 4, 2021 17:30	January 4, 2021 23:15	5h 45m	6,229	1,572
13	Johnson County, IA	January 30, 2021 17:15	January 31, 2021 01:30	8h 15m	5,738	11K
14	Wright County, IA	December 15, 2021 23:15	December 18, 2021 02:15	2d 3h	5,538	66K
15	Linn County, IA	January 30, 2021 19:45	January 31, 2021 03:15	7h 30m	5,441	5,840
16	Appanoose County, IA	December 15, 2021 23:15	December 17, 2021 06:30	1d 7h	5,385	41K
17	Mills County, IA	December 15, 2021 19:15	December 19, 2021 18:45	3d 23h	5,353	68K
18	Polk County, IA	August 17, 2021 19:30	August 18, 2021 02:00	6h 30m	5,100	10K
19	Winneshiek County, IA	December 16, 2021 01:45	December 17, 2021 05:00	1d 3h	5,083	84K
20	Polk County, IA	October 12, 2021 13:00	October 12, 2021 17:15	4h 15m	5,061	1,270
21	Des Moines County, IA	June 11, 2021 16:15	June 12, 2021 05:30	13h 15m	4,966	8,397
22	Iowa County, IA	May 3, 2021 23:00	May 4, 2021 02:15	3h 15m	4,896	3,241
23	Scott County, IA	April 4, 2021 17:45	April 4, 2021 19:15	1h 30m	4,772	2,781
24	Polk County, IA	June 30, 2021 06:00	July 1, 2021 07:00	1d 1h	4,740	1,729
25	Dallas County, IA	January 12, 2021 15:45	January 12, 2021 20:15	4h 30m	4,704	1,181

EAGLE-I tracked about 91% of Iowa'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.

Iowa by year:2025 2024 2023 2022 2020 2019 2018 2017 2016 2015

Other states in 2021:LA MI WV OR TX MS KY NC

Part of the 2021 US Power Outage Report.

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