2021 South Dakota Power Outage Report

In 2021, the average South Dakota customer went without power for about 3.4 hours, the 31st worst of 51 states (US average 8.4 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.

Avg hrs / customer

3.4

vs prior year

▼ 27%

vs 2020

Customer-hours out

1.6M

Peak customers out

17,571

across the state at once

EAGLE-I coverage

79%

of SD customers

Counties reporting

South Dakota 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 South Dakota; May was the worst.

CSV JSON

All 61 South Dakota 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	Grant County	77.5	242K	3,124	1,490	42
2	McPherson County	37.9	46K	1,223	652	27
3	Hamlin County	24.4	53K	2,187	741	122
4	Harding County	23.8	43K	1,828	1,783	103
5	Perkins County	23.3	21K	890	890	97
6	Jackson County	10.4	9,552	915	439	64
7	Jones County	9.2	6,431	697	279	55
8	Fall River County	8.6	35K	4,055	1,001	150
9	Custer County	6.1	27K	4,481	1,564	169
10	Turner County	5.6	28K	4,964	815	159
11	Edmunds County	5.5	12K	2,191	1,188	22
12	Deuel County	5.4	8,190	1,505	145	111
13	Butte County	4.7	22K	4,717	395	109
14	Buffalo County	4.7	2,757	592	592	49
15	Hyde County	4.5	2,784	615	615	15
16	Brule County	4.3	12K	2,837	2,067	79
17	Sanborn County	4.1	5,962	1,463	545	44
18	Meade County	4.0	57K	14,286	8,735	169
19	Campbell County	4.0	2,278	576	576	6
20	Pennington County	3.8	258K	68,130	3,084	359
21	Lawrence County	3.7	58K	15,540	5,448	170
22	Lyman County	3.7	11K	2,969	1,034	106
23	Faulk County	3.3	3,885	1,168	806	28
24	McCook County	3.3	10K	3,102	403	93
25	Haakon County	3.2	4,443	1,375	334	64
26	Walworth County	3.2	7,649	2,370	2,370	26
27	Clark County	3.1	4,966	1,587	385	43
28	Lincoln County	3.1	97K	31,561	3,006	208
29	Moody County	3.0	11K	3,517	234	180
30	Hutchinson County	2.9	16K	5,650	960	167
31	Day County	2.9	12K	4,051	2,014	110
32	Potter County	2.6	2,954	1,138	1,027	10
33	Union County	2.6	8,705	3,359	1,843	137
34	Minnehaha County	2.5	233K	91,940	7,171	540
35	Charles Mix County	2.5	12K	4,915	1,464	84
36	Marshall County	2.3	5,873	2,509	436	73
37	Lake County	2.1	17K	8,064	632	215
38	Roberts County	2.1	8,626	4,096	1,096	59
39	Beadle County	2.1	21K	9,787	2,415	146
40	Spink County	2.1	6,918	3,353	969	49
41	Stanley County	2.0	5,159	2,520	484	64
42	Miner County	1.7	1,854	1,069	352	41
43	Jerauld County	1.6	1,634	1,049	433	37
44	Hanson County	1.4	2,825	1,960	329	49
45	Yankton County	1.4	17K	11,940	1,795	151
46	Brookings County	1.4	26K	19,030	2,002	119
47	Douglas County	1.4	2,379	1,745	634	13
48	Davison County	1.3	15K	11,593	2,581	199
49	Brown County	1.1	22K	19,238	3,279	200
50	Hand County	0.9	1,855	1,991	313	9
51	Kingsbury County	0.9	2,402	2,587	407	37
52	Oglala Lakota County	0.9	3,784	4,164	521	47
53	Mellette County	0.8	748	957	25	8
54	Aurora County	0.6	794	1,368	46	65
55	Ziebach County	0.5	650	1,374	33	14
56	Bon Homme County	0.3	834	2,917	62	59
57	Corson County	0.2	388	1,975	140	9
58	Hughes County	0.1	2,122	14,362	374	9
59	Codington County	0.1	3,461	24,302	612	28
60	Clay County	0.1	823	8,444	94	14
61	Tripp County	0.0	79	4,744	2	7

Biggest South Dakota 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	Meade County, SD	October 12, 2021 20:15	October 14, 2021 20:15	2d	8,735	8,929
2	Minnehaha County, SD	August 6, 2021 01:45	August 31, 2021 19:45	25d 18h	7,171	27K
3	Minnehaha County, SD	February 16, 2021 13:45	February 16, 2021 22:30	8h 45m	7,033	16K
4	Lawrence County, SD	October 12, 2021 19:15	October 14, 2021 17:00	1d 21h	5,448	6,773
5	Brown County, SD	February 16, 2021 14:30	February 16, 2021 17:30	3h	3,279	6,558
6	Pennington County, SD	March 13, 2021 00:45	March 15, 2021 15:45	2d 15h	3,084	11K
7	Lincoln County, SD	August 28, 2021 21:45	August 31, 2021 02:45	2d 5h	3,006	50K
8	Pennington County, SD	February 12, 2021 01:45	February 12, 2021 05:30	3h 45m	2,912	4,336
9	Minnehaha County, SD	June 3, 2021 11:30	June 16, 2021 23:15	13d 11h	2,732	9,752
10	Minnehaha County, SD	September 16, 2021 13:15	September 29, 2021 19:30	13d 6h	2,622	47K
11	Davison County, SD	March 15, 2021 06:45	March 16, 2021 00:15	17h 30m	2,581	4,063
12	Pennington County, SD	December 3, 2021 16:00	December 3, 2021 20:45	4h 45m	2,564	665
13	Lincoln County, SD	June 3, 2021 14:00	June 3, 2021 19:45	5h 45m	2,529	1,933
14	Pennington County, SD	October 12, 2021 13:30	October 14, 2021 00:30	1d 11h	2,487	12K
15	Lincoln County, SD	November 30, 2021 15:45	November 30, 2021 22:00	6h 15m	2,461	1,250
16	Lincoln County, SD	November 22, 2021 16:15	November 22, 2021 17:15	1h	2,445	1,834
17	Beadle County, SD	May 3, 2021 05:00	May 3, 2021 09:15	4h 15m	2,415	7,303
18	Walworth County, SD	October 14, 2021 05:45	October 14, 2021 11:00	5h 15m	2,370	5,441
19	Beadle County, SD	February 16, 2021 15:30	February 16, 2021 17:30	2h	2,256	4,511
20	Minnehaha County, SD	February 24, 2021 15:15	February 25, 2021 01:00	9h 45m	2,206	2,432
21	Pennington County, SD	April 7, 2021 01:45	April 7, 2021 14:00	12h 15m	2,103	5,785
22	Minnehaha County, SD	July 25, 2021 12:00	July 25, 2021 18:45	6h 45m	2,102	3,223
23	Brule County, SD	March 15, 2021 03:45	March 15, 2021 10:00	6h 15m	2,067	8,171
24	Day County, SD	February 27, 2021 06:00	February 27, 2021 12:15	6h 15m	2,014	3,333
25	Brookings County, SD	May 18, 2021 17:15	September 28, 2021 13:30	132d 20h	2,002	22K

EAGLE-I tracked about 79% of South Dakota'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.

South Dakota 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.