massoutage

County annual report · FIPS 24017

2017 Charles County, MD Power Outage Report

In 2017, customers in Charles County, MD went without power for an average of 3.6 hours, a total of 267K customer-hours (Maryland average 1.9 hours). That ranks 5th worst of 24 Maryland counties and 1177th of 2,786 nationally.

Summary data CSVJSON
Avg hrs / customer
3.6
73,494 customers
Customer-hours out
267K
Peak customers out
14,108
Outages ≥1,000 out
18
2 of 10,000+ · 967 total
Longest outage
1d 17h
began March 14, 2017
Rank in state
5th/24
1177th of 2,786 US

Compared with MD, the US and 2016

Charles County, MD average hours without power per customer compared with state and national averages, 2017Charles County 3.6 hours, Maryland average 1.9 hours, US average 7.4 hours, Charles County, 2016 1.7 hoursCharles CountyCharles County3.6hMaryland averageMaryland average1.9hUS averageUS average7.4hCharles County, 2016Charles County, 20161.7h
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Average hours without power per customer in 2017; last bar is this county in 2016.

Month by month

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Charles County, MD customer-hours without power by month, 2017Jan 9,181, Feb 34K, Mar 89K, Apr 17K, May 13K, Jun 8,796, Jul 27K, Aug 35K, Sep 6,377, Oct 17K, Nov 6,121, Dec 4,899025k50k75k100k9,181Jan34KFeb89KMar17KApr13KMay8,796Jun27KJul35KAug6,377Sep17KOct6,121Nov4,899Dec
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Customer-hours; March 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, 2017

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1February 25, 2017 20:00February 26, 2017 08:4512h 45m14,10827K
2March 14, 2017 07:00March 16, 2017 00:301d 17h10,93282K
3August 8, 2017 03:15August 8, 2017 17:1514h5,5745,176
4July 12, 2017 21:45July 13, 2017 06:308h 45m3,1106,058
5April 21, 2017 22:00April 22, 2017 07:309h 30m2,9936,474
6January 23, 2017 08:15January 24, 2017 06:0021h 45m2,7124,750
7April 22, 2017 10:30April 22, 2017 11:1545m2,1261,018
8August 21, 2017 07:15August 21, 2017 18:4511h 30m1,9563,233
9October 29, 2017 21:15October 30, 2017 23:301d 2h1,8185,171
10October 24, 2017 13:15October 24, 2017 21:308h 15m1,8061,056

Outage episodes by size in 2017: 122 reached 100+ customers, 18 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 2017, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
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 2017; 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, 2017, 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/2017/maryland/charles-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON