massoutage

County annual report · FIPS 45029

2024 Colleton County, SC Power Outage Report

In 2024, customers in Colleton County, SC went without power for an average of 54.2 hours, a total of 1.1M customer-hours (South Carolina average 50.1 hours). That ranks 17th worst of 46 South Carolina counties and 183rd of 2,990 nationally.

Summary data CSVJSON
Avg hrs / customer
54.2
20,355 customers
Customer-hours out
1.1M
Peak customers out
23,386
Outages ≥1,000 out
10
1 of 10,000+ · 744 total
Longest outage
8d 3h
began September 26, 2024
Rank in state
17th/46
183rd of 2,990 US

Compared with SC, the US and 2023

Colleton County, SC average hours without power per customer compared with state and national averages, 2024Colleton County 54.2 hours, South Carolina average 50.1 hours, US average 12.6 hours, Colleton County, 2023 6.0 hoursColleton CountyColleton County54.2hSouth Carolina averageSouth Carolina avera…50.1hUS averageUS average12.6hColleton County, 2023Colleton County, 20236.0h
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Average hours without power per customer in 2024; last bar is this county in 2023.

Month by month

CSVJSON
Colleton County, SC customer-hours without power by month, 2024Jan 77K, Feb 9,333, Mar 5,250, Apr 4,492, May 6,991, Jun 8,482, Jul 11K, Aug 91K, Sep 824K, Oct 53K, Nov 5,579, Dec 7,3810250k500k750k1M77KJan9,333Feb5,250Mar4,492Apr6,991May8,482Jun11KJul91KAug824KSep53KOct5,579Nov7,381Dec
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Customer-hours; September was the worst month.

Colleton County year over year

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Colleton County, SC: average hours without power per customer by year2015: 1.3h; 2016: 46.8h; 2017: 14.2h; 2018: 7.7h, coverage 99%; 2019: 15.0h, coverage 99%; 2020: 11.7h, coverage 99%; 2021: 5.7h, coverage 99%; 2022: 8.8h, coverage 99%; 2023: 6.0h; 2024: 54.2h; 2025: 5.1h02040600%50%100%1.3h201546.8h201614.2h20177.7h201815.0h201911.7h20205.7h20218.8h20226.0h202354.2h20245.1h2025
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Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

Coverage line is EAGLE-I's share of South Carolina customers tracked each year.

Biggest outages in Colleton County, 2024

The 10 outage episodes with the most customers out at once. Times are UTC.

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1September 26, 2024 16:15October 4, 2024 19:308d 3h23,386869K
2January 9, 2024 13:15January 11, 2024 04:151d 15h8,62274K
3August 5, 2024 23:00August 8, 2024 03:002d 4h3,72179K
4December 11, 2024 16:00December 12, 2024 00:158h 15m2,9024,004
5October 4, 2024 21:45October 5, 2024 00:152h 30m2,8114,221
6January 12, 2024 08:15January 12, 2024 08:3015m2,790698
7February 4, 2024 05:45February 4, 2024 06:1530m2,7881,394
8February 7, 2024 08:30February 7, 2024 19:4511h 15m2,5016,227
9July 27, 2024 20:30July 28, 2024 01:154h 45m1,2272,960
10April 15, 2024 12:30April 15, 2024 15:453h 15m1,040270

Outage episodes by size in 2024: 81 reached 100+ customers, 10 reached 1,000+ customers, 1 reached 10,000+ customers.

Utility reliability filed with the EIA

SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Colleton County reported on EIA Form 861 for 2024, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Dominion Energy South Carolina, Inc202431.8 hrs2.5281 min1.19
Edisto Electric Coop, Inc202439.2 hrs-4.9 hrs-
Coastal Electric Coop, Inc20185.2 hrs2.733.2 hrs2.21

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of South Carolina's customers in 2024; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 20,355 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
  • An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
  • Years loaded: 2015–2025. Colleton County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Colleton County, SC annual power outage report, 2024, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2024/south-carolina/colleton-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON