massoutage

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 any US state that year, 1.1× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
3.4
Peak customers out
8,735
Rank (worst state)
31st
Counties affected
20

South Dakota outages over the decade

Average hours without power per customer, 2021 highlighted.

0.7h20150.9h20160.8h20171.1h20183.8h20194.6h20203.4h20216.9h20222.3h20232.3h20246.5h2025

Hardest-hit South Dakota counties in 2021

By peak customers out during the year's worst event.

1Meade County8,7352Minnehaha County7,1713Lawrence County5,4484Brown County3,2795Pennington County3,0846Lincoln County3,0067Davison County2,5818Walworth County2,4549Beadle County2,41510Brule County2,06711Day County2,01412Brookings County2,00213Perkins County1,98814Union County1,84315Yankton County1,79516Harding County1,78317Custer County1,56418Grant County1,49019Charles Mix County1,46420Edmunds County1,188

Biggest South Dakota outages of 2021

CountyBeganPeak customers out
Meade CountyOctober 12, 20218,735
Minnehaha CountyAugust 6, 20217,171
Minnehaha CountyFebruary 16, 20217,033
Lawrence CountyOctober 12, 20215,448
Brown CountyFebruary 16, 20213,279
Pennington CountyMarch 13, 20213,084
Lincoln CountyAugust 28, 20213,006
Pennington CountyFebruary 12, 20212,912
Minnehaha CountyJune 3, 20212,732
Minnehaha CountySeptember 16, 20212,622
South Dakota by year:20252024202320222020201920182017
Other states in 2021:LAMIWVTXORMS

Part of the 2021 US Power Outage Report. Source: DOE/ORNL EAGLE-I. “Avg hours per customer” is a SAIDI-like measure (outage customer-minutes ÷ tracked customers); coverage varies by year.