McCormick County, South Carolina Power Outages, 2015 to 2023

McCormick County, South Carolina had 12 major outages from 2015 to 2023

Higher outage time among US counties

Residents here averaged 2.06 times the US outage time per person and 2.19 times the South Carolina rate. It ranks 4 of 46 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

1.3major outages per year

7 of 9years with a major outage

40 hrslongest major outage

Sep, Julhardest months

September and July made up 51% of this county's outage time. The largest outage on record began Sep 11, 2017, reached 5,063 customers, and left at least 200 customers out for 40.5 hours.

Outage time per resident, rated South Carolina counties

MostLeast

Outage impact by year

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

50K

100K

150K

200K

2015'152016'162017'172018'182019'192020'202021'212022'222023'23

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	16,756	4	2
2016	2,666	4	0
2017	157,507	27	1
2018	42,220	21	1
2019	62,111	25	3
2020	23,525	21	1
2021	31,408	24	0
2022	50,218	27	2
2023	66,937	26	2

When outages hit

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

10%

20%

30%

40%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
Sep 11, 2017	40.5	5,063	120,112
Jul 21, 2023	27.2	4,602	38,232
Jun 22, 2019	32.5	1,433	18,016
Sep 18, 2019	6.2	2,042	12,762
Oct 4, 2015	30.8	575	9,585

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.

Look up another county

Counties ranked nearby

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.