Outage Almanac

South Dakota power outages

58 counties with outage records. Pick one to see its history.

South Dakota averaged 0.49 times the US outage time per person

That ranks 35 of 50 states and DC, where 1 has the most. May and July made up 36% of outage time. Records run from 2015 to 2023, and some counties start later.

Day County had the most outage time per resident of 32 rated counties.

Counties ranked by outage time

RankCountyMajor outages per yearLongest (hours)Times US rate
1Day County2.8242.09
2Hamlin County1.0501.40
3Kingsbury County0.4511.28
4Moody County0.51041.11
5Beadle County0.8301.07
6Yankton County3.2620.98
7Brule County0.2180.97
8McCook County0.7520.94
9Lake County0.2770.91
10Minnehaha County1.11400.62
11Davison County0.2180.59
12Charles Mix County0.0None0.55
13Grant County0.8200.54
14Bon Homme County0.2120.50
15Brown County0.5340.48
16Hutchinson County0.2120.46
17Turner County0.2480.42
18Custer County0.5160.41
19Fall River County0.4110.39
19Spink County0.0None0.39
21Roberts County0.5180.36
22Brookings County0.2910.31
22Lawrence County0.5180.31
24Pennington County0.9630.27
25Walworth County0.0None0.26
26Butte County0.0None0.14
27Hughes County0.6100.12
27Lincoln County0.1250.12
29Meade County0.0None0.11
29Union County0.190.11
31Codington County0.0None0.07
31Oglala Lakota County0.0None0.07

Rank uses outage time per resident. Times US rate compares each county with the national average.

When outages hit South Dakota

Share of the state's customer-hours by month.

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JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Not rated

These counties have short histories, very small populations, or customer counts that look too high for the population.