massoutage

County annual report · FIPS 45045

2024 Greenville County, SC Power Outage Report

In 2024, customers in Greenville County, SC went without power for an average of 166.2 hours, a total of 34.6M customer-hours (South Carolina average 50.1 hours). That ranks 4th worst of 46 South Carolina counties and 56th of 2,990 nationally.

Summary data CSVJSON
Avg hrs / customer
166.2
208,040 customers
Customer-hours out
34.6M
Peak customers out
270,050
Outages ≥1,000 out
60
3 of 10,000+ · 450 total
Longest outage
18d 6h
began September 25, 2024
Rank in state
4th/46
56th of 2,990 US

Compared with SC, the US and 2023

Greenville County, SC average hours without power per customer compared with state and national averages, 2024Greenville County 166.2 hours, South Carolina average 50.1 hours, US average 12.6 hours, Greenville County, 2023 3.6 hoursGreenville CountyGreenville County166.2hSouth Carolina averageSouth Carolina avera…50.1hUS averageUS average12.6hGreenville County, 2023Greenville County, 2…3.6h
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Average hours without power per customer in 2024; last bar is this county in 2023.

Month by month

CSVJSON
Greenville County, SC customer-hours without power by month, 2024Jan 55K, Feb 31K, Mar 50K, Apr 33K, May 108K, Jun 41K, Jul 47K, Aug 53K, Sep 20.2M, Oct 13.9M, Nov 33K, Dec 41K010M20M30M55KJan31KFeb50KMar33KApr108KMay41KJun47KJul53KAug20.2MSep13.9MOct33KNov41KDec
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Customer-hours; September was the worst month.

Greenville County year over year

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Greenville County, SC: average hours without power per customer by year2015: 3.8h; 2016: 5.0h; 2017: 9.1h; 2018: 12.8h, coverage 99%; 2019: 3.2h, coverage 99%; 2020: 15.3h, coverage 99%; 2021: 4.6h, coverage 99%; 2022: 5.1h, coverage 99%; 2023: 3.6h; 2024: 166.2h; 2025: 3.6h0501001502000%50%100%3.8h20155.0h20169.1h201712.8h20183.2h201915.3h20204.6h20215.1h20223.6h2023166.2h20243.6h2025
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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 Greenville 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 25, 2024 00:15October 13, 2024 06:1518d 6h270,05034.0M
2March 13, 2024 12:30March 14, 2024 02:0013h 30m17,8355,114
3March 19, 2024 12:30March 20, 2024 08:0019h 30m14,8264,738
4May 4, 2024 10:15May 5, 2024 11:001d9,7954,546
5March 25, 2024 11:15March 26, 2024 10:0022h 45m7,1252,057
6May 26, 2024 23:15May 29, 2024 23:303d6,00320K
7March 26, 2024 12:15March 27, 2024 09:0020h 45m5,9878,993
8December 15, 2024 00:45December 17, 2024 11:302d 10h5,9635,987
9May 8, 2024 09:15May 12, 2024 01:453d 16h4,29129K
10February 20, 2024 12:30February 21, 2024 05:1516h 45m3,4131,137

Outage episodes by size in 2024: 158 reached 100+ customers, 60 reached 1,000+ customers, 3 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 Greenville 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
Duke Energy Carolinas, LLC202478.6 hrs2.502.9 hrs1.26
Laurens Electric Coop, Inc2024138.5 hrs2.841.6 hrs1.14
Blue Ridge Electric Coop Inc - (SC)202488.2 hrs-3.2 hrs-
Duke Energy-----
Greer Commission of Public Wks-----

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 ÷ 208,040 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. Greenville County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Greenville 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/greenville-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON