massoutage

County annual report · FIPS 24017

2015 Charles County, MD Power Outage Report

In 2015, customers in Charles County, MD went without power for an average of 3.1 hours, a total of 224K customer-hours (Maryland average 2.0 hours). That ranks 5th worst of 24 Maryland counties and 901st of 2,484 nationally.

Summary data CSVJSON
Avg hrs / customer
3.1
73,494 customers
Customer-hours out
224K
Peak customers out
22,010
Outages ≥1,000 out
15
2 of 10,000+ · 883 total
Longest outage
9d 1h
began December 21, 2015
Rank in state
5th/24
901st of 2,484 US

Compared with MD, the US

Charles County, MD average hours without power per customer compared with state and national averages, 2015Charles County 3.1 hours, Maryland average 2.0 hours, US average 2.9 hoursCharles CountyCharles County3.1hMaryland averageMaryland average2.0hUS averageUS average2.9h
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Average hours without power per customer in 2015.

Month by month

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Charles County, MD customer-hours without power by month, 2015Jan 5,386, Feb 14K, Mar 5,514, Apr 24K, May 6,591, Jun 85K, Jul 30K, Aug 15K, Sep 17K, Oct 10K, Nov 7,327, Dec 4,823025k50k75k100k5,386Jan14KFeb5,514Mar24KApr6,591May85KJun30KJul15KAug17KSep10KOct7,327Nov4,823Dec
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Customer-hours; June was the worst month.

Charles County year over year

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Charles County, MD: average hours without power per customer by year2015: 3.1h; 2016: 1.7h; 2017: 3.6h; 2018: 7.0h, coverage 98%; 2019: 2.4h, coverage 97%; 2020: 3.0h, coverage 98%; 2021: 2.4h, coverage 99%; 2022: 9.4h, coverage 99%; 2023: 5.5h; 2024: 2.9h; 2025: 2.5h02.557.5100%50%100%3.1h20151.7h20163.6h20177.0h20182.4h20193.0h20202.4h20219.4h20225.5h20232.9h20242.5h2025
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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 Maryland customers tracked each year.

Biggest outages in Charles County, 2015

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

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#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1June 20, 2015 23:30June 22, 2015 08:451d 9h22,01055K
2April 7, 2015 17:00April 8, 2015 02:159h 15m10,0158,241
3July 20, 2015 12:30July 21, 2015 02:0013h 30m6,6606,358
4July 31, 2015 09:30July 31, 2015 23:4514h 15m4,6226,353
5September 22, 2015 11:45September 22, 2015 15:003h 15m1,9382,490
6November 12, 2015 11:15November 12, 2015 17:306h 15m1,5461,963
7April 30, 2015 20:45May 1, 2015 01:004h 15m1,4842,326
8June 24, 2015 00:00June 25, 2015 01:301d 1h1,33512K
9April 3, 2015 12:00April 3, 2015 19:157h 15m1,2961,330
10July 1, 2015 04:15July 1, 2015 21:1517h1,2752,914

Outage episodes by size in 2015: 100 reached 100+ customers, 15 reached 1,000+ customers, 2 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 Charles County reported on EIA Form 861 for 2015, or their most recent earlier filing. Utility-wide figures, not county-specific.

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UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Southern Maryland Elec Coop Inc-----

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 Maryland's customers in 2015; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 73,494 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. Charles County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Charles County, MD 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/). https://massoutage.com/reports/2015/maryland/charles-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON