massoutage

County annual report · FIPS 45015

2015 Berkeley County, SC Power Outage Report

In 2015, customers in Berkeley County, SC went without power for an average of 0.2 hours, a total of 34K customer-hours (South Carolina average 2.5 hours). That ranks 45th worst of 46 South Carolina counties and 2249th of 2,484 nationally.

Summary data CSVJSON
Avg hrs / customer
0.2
162,211 customers
Customer-hours out
34K
Peak customers out
3,088
Outages ≥1,000 out
5
0 of 10,000+ · 503 total
Longest outage
13d 23h
began August 18, 2015
Rank in state
45th/46
2249th of 2,484 US

Compared with SC, the US

Berkeley County, SC average hours without power per customer compared with state and national averages, 2015Berkeley County 0.2 hours, South Carolina average 2.5 hours, US average 2.9 hoursBerkeley CountyBerkeley County0.2hSouth Carolina averageSouth Carolina avera…2.5hUS averageUS average2.9h
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Average hours without power per customer in 2015.

Month by month

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Berkeley County, SC customer-hours without power by month, 2015Jan 11K, Feb 1,453, Mar 3,197, Apr 851, May 936, Jun 1,230, Jul 6,695, Aug 2,181, Sep 2,563, Oct 1,163, Nov 1,501, Dec 85105k10k15k11KJan1,453Feb3,197Mar851Apr936May1,230Jun6,695Jul2,181Aug2,563Sep1,163Oct1,501Nov851Dec
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Customer-hours; January was the worst month.

Berkeley County year over year

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Berkeley County, SC: average hours without power per customer by year2015: 0.2h; 2016: 2.3h; 2017: 1.2h; 2018: 1.6h, coverage 99%; 2019: 6.1h, coverage 99%; 2020: 2.9h, coverage 99%; 2021: 1.1h, coverage 99%; 2022: 2.9h, coverage 99%; 2023: 1.2h; 2024: 3.1h; 2025: 2.6h024680%50%100%0.2h20152.3h20161.2h20171.6h20186.1h20192.9h20201.1h20212.9h20221.2h20233.1h20242.6h2025
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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 Berkeley County, 2015

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1January 29, 2015 14:00January 29, 2015 18:454h 45m3,0889,269
2July 19, 2015 21:00July 20, 2015 22:301d 1h2,135730
3June 9, 2015 12:45June 9, 2015 14:452h1,573397
4December 14, 2015 14:00December 14, 2015 17:453h 45m1,394440
5July 14, 2015 01:00July 14, 2015 09:008h1,2022,441
6March 14, 2015 14:15March 14, 2015 18:454h 30m9472,140
7September 16, 2015 14:30September 16, 2015 15:451h 15m671285
8July 23, 2015 19:30July 24, 2015 04:008h 30m5761,783
9January 13, 2015 01:30January 13, 2015 02:451h 15m561178
10February 26, 2015 06:00February 26, 2015 06:4545m561141

Outage episodes by size in 2015: 28 reached 100+ customers, 5 reached 1,000+ customers, 0 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 Berkeley County reported on EIA Form 861 for 2015, 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, Inc20152.6 hrs1.621.6 hrs1.34
Edisto Electric Coop, Inc20151.6 hrs-69 min-
Berkeley Electric Coop Inc20153.5 hrs2.112.4 hrs1.72
South Carolina Public Service Authority201537 min0.6023 min0.29

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 2015; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 162,211 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. Berkeley County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Berkeley County, SC annual power outage report, 2015, 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/2015/south-carolina/berkeley-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON