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

Avg hrs / customer
2.1
Peak customers out
52,176
Rank (worst state)
43rd
Counties affected
20

South Carolina outages over the decade

Average hours without power per customer, 2021 highlighted.

2.5h201513.0h20164.4h20175.2h20184.8h20195.7h20202.1h20214.4h20222.7h202350.1h20243.0h2025

Hardest-hit South Carolina counties in 2021

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

1Charleston County52,1762Pickens County30,5063Greenville County23,4964Richland County17,7545Saluda County16,9956Beaufort County16,3747Colleton County15,6858Sumter County15,4579Anderson County14,05310Aiken County13,68911York County13,12612Lancaster County12,37813Berkeley County10,95814Jasper County9,86515Horry County9,39816Dorchester County8,70217Lexington County8,11418Kershaw County7,65119Oconee County7,52320Clarendon County6,546

Biggest South Carolina outages of 2021

CountyBeganPeak customers out
Charleston CountyJuly 7, 202152,176
Pickens CountyJuly 27, 202130,506
Greenville CountyJuly 25, 202123,496
Richland CountyJuly 26, 202117,754
Saluda CountyJuly 28, 202116,995
Beaufort CountyJuly 8, 202116,374
Colleton CountyJuly 28, 202115,685
Sumter CountyApril 8, 202115,457
Anderson CountyJuly 26, 202114,053
Aiken CountyJanuary 28, 202113,689
South Carolina 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.