massoutage

2020 South Carolina Power Outage Report

In 2020, the average South Carolina customer went without power for about 5.7 hours — the 23rd worst of any US state that year, below the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
5.7
Peak customers out
71,283
Rank (worst state)
23rd
Counties affected
20

South Carolina outages over the decade

Average hours without power per customer, 2020 highlighted.

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

Hardest-hit South Carolina counties in 2020

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

1Greenville County71,2832Spartanburg County31,4863Pickens County27,6704Oconee County26,6905Berkeley County21,7516Anderson County21,5267Charleston County19,4328Richland County17,1999Lexington County15,04210Horry County14,59111Orangeburg County14,06212Dorchester County13,94313York County13,76914Colleton County12,94415Florence County10,14616Beaufort County9,89617Aiken County8,61118Barnwell County7,89719Laurens County5,63520Chesterfield County5,511

Biggest South Carolina outages of 2020

CountyBeganPeak customers out
Greenville CountyOctober 27, 202071,283
Greenville CountyApril 6, 202035,691
Spartanburg CountyOctober 27, 202031,486
Pickens CountyOctober 29, 202027,670
Oconee CountyOctober 27, 202026,690
Pickens CountyApril 6, 202022,683
Berkeley CountyApril 6, 202021,751
Anderson CountyApril 6, 202021,526
Oconee CountyApril 6, 202020,719
Charleston CountyMay 27, 202019,432
South Carolina by year:20252024202320222021201920182017
Other states in 2020:LAMEOKIAALNC

Part of the 2020 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.