massoutage

County annual report · FIPS 24011

2021 Caroline County, MD Power Outage Report

In 2021, customers in Caroline County, MD went without power for an average of 1.1 hours, a total of 19K customer-hours (Maryland average 2.5 hours). That ranks 21st worst of 24 Maryland counties and 2634th of 2,974 nationally.

Summary data CSVJSON
Avg hrs / customer
1.1
17,587 customers
Customer-hours out
19K
Peak customers out
1,693
Outages ≥1,000 out
5
0 of 10,000+ · 510 total
Longest outage
16h 30m
began May 4, 2021
Rank in state
21st/24
2634th of 2,974 US

Compared with MD, the US and 2020

Caroline County, MD average hours without power per customer compared with state and national averages, 2021Caroline County 1.1 hours, Maryland average 2.5 hours, US average 8.9 hours, Caroline County, 2020 3.9 hoursCaroline CountyCaroline County1.1hMaryland averageMaryland average2.5hUS averageUS average8.9hCaroline County, 2020Caroline County, 20203.9h
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Average hours without power per customer in 2021; last bar is this county in 2020.

Month by month

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Caroline County, MD customer-hours without power by month, 2021Jan 406, Feb 1,633, Mar 1,854, Apr 509, May 985, Jun 5,159, Jul 3,276, Aug 2,179, Sep 1,033, Oct 730, Nov 491, Dec 50502k4k6k406Jan1,633Feb1,854Mar509Apr985May5,159Jun3,276Jul2,179Aug1,033Sep730Oct491Nov505Dec
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Customer-hours; June was the worst month.

Caroline County year over year

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Caroline County, MD: average hours without power per customer by year2015: 0.9h; 2016: 3.1h; 2017: 3.0h; 2018: 0.9h, coverage 98%; 2019: 1.8h, coverage 97%; 2020: 3.9h, coverage 98%; 2021: 1.1h, coverage 99%; 2022: 1.6h, coverage 99%; 2023: 1.6h; 2024: 2.0h; 2025: 2.5h012340%50%100%0.9h20153.1h20163.0h20170.9h20181.8h20193.9h20201.1h20211.6h20221.6h20232.0h20242.5h2025
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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 Caroline County, 2021

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1March 29, 2021 15:45March 29, 2021 16:451h1,693424
2March 24, 2021 13:45March 24, 2021 14:1530m1,342671
3June 27, 2021 01:45June 27, 2021 04:453h1,1611,330
4June 14, 2021 22:15June 15, 2021 03:155h1,129658
5June 6, 2021 18:15June 6, 2021 21:153h1,0211,537
6October 16, 2021 22:45October 16, 2021 23:3045m859304
7July 31, 2021 03:00July 31, 2021 06:153h 15m760846
8March 8, 2021 12:30March 8, 2021 13:451h 15m667336
9June 8, 2021 12:30June 8, 2021 17:455h 15m574313
10July 1, 2021 20:45July 2, 2021 03:006h 15m391966

Outage episodes by size in 2021: 32 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 Caroline County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.

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UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Delmarva Power202163 min0.8263 min0.82
Choptank Electric Cooperative, Inc20211.7 hrs1.201.7 hrs1.20

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 99% of Maryland's customers in 2021; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 17,587 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. Caroline County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Caroline County, MD annual power outage report, 2021, 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/2021/maryland/caroline-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON