Custer County, South Dakota Power Outages, 2016 to 2023

Custer County, South Dakota had 4 major outages from 2016 to 2023

Below middle outage time among US counties

Residents here averaged 0.41 times the US outage time per person and 0.84 times the South Dakota rate. It ranks 18 of 32 in the state, where 1 has the most. Data confidence: High, with 8 years of records.

0.5major outages per year

3 of 8years with a major outage

16 hrslongest major outage

Nov, Mayhardest months

November and May made up 35% of this county's outage time. The largest outage on record began Nov 30, 2019, reached 1,506 customers, and left at least 200 customers out for 10.5 hours.

Outage time per resident, rated South Dakota counties

MostLeast

Outage impact by year

Customer-hours without power. 1,000 customers out for 2 hours is 2,000 customer-hours.

10K

20K

30K

40K

2016'162017'172018'182019'192020'202021'212022'222023'23

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2016	3,923	6	0
2017	6,005	4	0
2018	0	0	0
2019	21,334	8	1
2020	7,066	12	0
2021	16,874	11	1
2022	11,212	4	2
2023	9,100	3	0

When outages hit

Share of this county's customer-hours by month.

10%

15%

20%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
Nov 30, 2019	10.5	1,506	14,442
Apr 7, 2022	12.0	861	7,024
Aug 13, 2023	5.0	1,386	5,722
Jun 27, 2017	6.8	779	4,870
Oct 13, 2021	11.5	683	3,469

Hours measure how long at least 200 customers in the county were out. Most customers get power back sooner.

Size your backup battery

Start with what you would keep running. Wattages are typical averages, so check your own appliances.

Phones, Wi-Fi, lights, about 60 WRefrigerator, about 60 WChest freezer, about 40 WGas furnace fan, about 160 W

Hours to cover: 24

1,700 Whof battery capacity, allowing for about 15% conversion loss

If anyone relies on medical equipment, plan that with their provider. Run portable fuel generators outdoors only, at least 20 feet from doors, windows and vents. See the outage checklist.

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How to read this

A major outage lasted at least 8 hours and reached customers equal to at least 1% of county residents.
Records cover outages of at least 200 customers in a county. They do not show what happened on your street.
Utilities that do not report can make a county look better than it is. Data ends in 2023. Read the full method.