massoutage

2021 South Carolina Power Outage Report

In 2021, the average South Carolina customer went without power for about 2.1 hours, the 43rd worst of 51 states (US average 8.4 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.

Avg hrs / customer
2.1
vs prior year
▼ 63%
vs 2020
Customer-hours out
6.1M
Peak customers out
98,639
across the state at once
EAGLE-I coverage
99%
of SC customers
Counties reporting
46

South Carolina year over year

South Carolina: average hours without power per customer by year2015: 2.5h; 2016: 13.0h; 2017: 4.4h; 2018: 5.2h, coverage 99%; 2019: 4.8h, coverage 99%; 2020: 5.7h, coverage 99%; 2021: 2.1h, coverage 99%; 2022: 4.4h, coverage 99%; 2023: 2.7h; 2024: 48.3h; 2025: 3.0h02040600%50%100%2.5h201513.0h20164.4h20175.2h20184.8h20195.7h20202.1h20214.4h20222.7h202348.3h20243.0h2025
Use the arrow keys to read values.
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 Carolina; July was the worst.

CSVJSON
South Carolina customer-hours without power by month, 2021Jan 236K, Feb 341K, Mar 342K, Apr 442K, May 648K, Jun 608K, Jul 1.7M, Aug 624K, Sep 401K, Oct 283K, Nov 186K, Dec 289K0500k1M1.5M2M236KJan341KFeb342KMar442KApr648KMay608KJun1.7MJul624KAug401KSep283KOct186KNov289KDec
Use the arrow keys to read values.

All 46 South Carolina counties, 2021

Ranked by average hours without power per customer. Each county links to its annual report.

CSVJSON
#CountyHrs / customerCustomer-hoursCustomersPeak outEvents
1McCormick County9.137K4,0911,895222
2Abbeville County7.574K9,8463,518435
3Colleton County5.7116K20,35515,685636
4Sumter County5.0213K42,51515,457825
5Chesterfield County4.775K16,1535,265595
6Greenville County4.6963K208,04023,496513
7Saluda County4.250K11,82411,824441
8Darlington County3.975K19,2115,717667
9Allendale County3.918K4,639949232
10Pickens County3.8278K74,03930,506779
11Jasper County3.665K17,7029,865452
12Lee County3.319K5,6752,597402
13Anderson County3.3337K101,52014,053669
14Marion County3.228K8,4973,744489
15Fairfield County2.941K13,9832,563236
16Chester County2.858K20,5483,262460
17Oconee County2.7110K40,4257,523674
18Spartanburg County2.6383K147,5585,792656
19Aiken County2.4192K79,30913,689972
20Newberry County2.456K23,3761,458336
21Clarendon County2.442K17,8096,546584
22Orangeburg County2.3137K58,6244,784840
23Williamsburg County2.348K21,4552,732733
24Edgefield County2.228K12,7171,924491
25Calhoun County2.220K9,1473,782380
26Lancaster County2.1109K52,27412,378754
27Beaufort County2.0257K127,28916,374821
28Charleston County2.0466K231,04652,176715
29Barnwell County2.021K10,6282,047382
30Hampton County2.018K8,8862,149324
31Florence County1.9104K54,5644,551965
32Greenwood County1.874K40,6952,023498
33Kershaw County1.772K43,1987,651613
34Lexington County1.6257K165,9048,1141,056
35Richland County1.5351K227,55917,754958
36Dorchester County1.4106K73,2698,702787
37Marlboro County1.421K14,9591,468200
38Dillon County1.414K10,0991,769364
39Union County1.227K21,94062692
40Georgetown County1.253K46,0103,876780
41Bamberg County1.19,9838,728861279
42Berkeley County1.1181K162,21110,958557
43Laurens County1.176K71,5494,247785
44Cherokee County0.936K39,7412,542502
45Horry County0.8212K259,1899,3981,288
46York County0.8138K173,48813,126724

Biggest South Carolina outages of 2021

Up to 25 county outage episodes with the most customers out at once.

CSVJSON
#CountyStarted (UTC)Ended (UTC)DurationPeak outCustomer-hours
1Charleston County, SCJuly 7, 2021 12:00July 9, 2021 07:301d 19h52,176100K
2Pickens County, SCJuly 27, 2021 01:15July 27, 2021 04:303h 15m30,50645K
3Greenville County, SCJuly 25, 2021 09:45July 29, 2021 06:003d 20h23,496286K
4Richland County, SCJuly 26, 2021 14:30July 28, 2021 16:152d 1h17,75446K
5Beaufort County, SCJuly 8, 2021 05:45July 10, 2021 05:301d 23h16,374104K
6Colleton County, SCJuly 28, 2021 19:30July 29, 2021 00:004h 30m15,68511K
7Sumter County, SCApril 8, 2021 08:45April 8, 2021 18:4510h15,45748K
8Anderson County, SCJuly 26, 2021 14:15July 28, 2021 13:451d 23h14,053111K
9Aiken County, SCJanuary 28, 2021 03:15January 28, 2021 06:153h13,68917K
10York County, SCJuly 26, 2021 14:30July 27, 2021 21:301d 7h13,12631K
11Lancaster County, SCJuly 14, 2021 20:45July 15, 2021 04:458h12,37811K
12Saluda County, SCJuly 28, 2021 18:15July 28, 2021 19:451h 30m11,82414K
13Colleton County, SCJuly 8, 2021 05:45July 9, 2021 00:0018h 15m11,14232K
14Charleston County, SCJuly 28, 2021 18:30July 29, 2021 00:155h 45m11,08012K
15Berkeley County, SCApril 1, 2021 22:45May 13, 2021 19:1541d 20h10,95850K
16Jasper County, SCJuly 28, 2021 12:15July 28, 2021 18:306h 15m9,86513K
17Horry County, SCJuly 8, 2021 10:15July 9, 2021 00:1514h9,39833K
18Pickens County, SCJuly 27, 2021 15:30July 28, 2021 22:301d 7h9,06761K
19Dorchester County, SCNovember 23, 2021 13:45November 23, 2021 14:451h8,7022,176
20Lexington County, SCMay 4, 2021 17:15May 6, 2021 00:151d 7h8,11444K
21Kershaw County, SCJanuary 12, 2021 00:30January 12, 2021 06:005h 30m7,6519,173
22Oconee County, SCJanuary 26, 2021 04:45January 26, 2021 21:0016h 15m7,5237,721
23Richland County, SCApril 30, 2021 09:15May 1, 2021 01:1516h7,4634,713
24Beaufort County, SCOctober 13, 2021 11:45October 13, 2021 16:154h 30m7,4491,879
25Beaufort County, SCOctober 11, 2021 09:45October 11, 2021 14:004h 15m7,4481,872
EAGLE-I tracked about 99% of South Carolina'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 Carolina by year:2025202420232022202020192018201720162015
Other states in 2021:LAMIWVORTXMSKYNC

Part of the 2021 US Power Outage Report.

Data from DOE EAGLE-I, every source we read.