massoutage

County annual report · FIPS 24019

2025 Dorchester County, MD Power Outage Report

In 2025, customers in Dorchester County, MD went without power for an average of 2.5 hours, a total of 46K customer-hours (Maryland average 4.2 hours). That ranks 20th worst of 24 Maryland counties and 2221st of 3,000 nationally.

Summary data CSVJSON
Avg hrs / customer
2.5
18,093 customers
Customer-hours out
46K
Peak customers out
6,528
Outages ≥1,000 out
4
0 of 10,000+ · 578 total
Longest outage
1d 5h
began May 16, 2025
Rank in state
20th/24
2221st of 3,000 US

Compared with MD, the US and 2024

Dorchester County, MD average hours without power per customer compared with state and national averages, 2025Dorchester County 2.5 hours, Maryland average 4.2 hours, US average 5.9 hours, Dorchester County, 2024 2.2 hoursDorchester CountyDorchester County2.5hMaryland averageMaryland average4.2hUS averageUS average5.9hDorchester County, 2024Dorchester County, 2…2.2h
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Average hours without power per customer in 2025; last bar is this county in 2024.

Month by month

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Dorchester County, MD customer-hours without power by month, 2025Jan 21K, Feb 454, Mar 2,475, Apr 1,385, May 4,667, Jun 1,461, Jul 7,527, Aug 951, Sep 1,381, Oct 752, Nov 1,769, Dec 2,056010k20k30k21KJan454Feb2,475Mar1,385Apr4,667May1,461Jun7,527Jul951Aug1,381Sep752Oct1,769Nov2,056Dec
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Customer-hours; January was the worst month.

Dorchester County year over year

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Dorchester County, MD: average hours without power per customer by year2015: 1.2h; 2016: 2.7h; 2017: 1.9h; 2018: 1.5h, coverage 98%; 2019: 1.6h, coverage 97%; 2020: 4.1h, coverage 98%; 2021: 2.7h, coverage 99%; 2022: 2.0h, coverage 99%; 2023: 1.6h; 2024: 2.2h; 2025: 2.5h02460%50%100%1.2h20152.7h20161.9h20171.5h20181.6h20194.1h20202.7h20212.0h20221.6h20232.2h20242.5h2025
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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 Dorchester County, 2025

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
1January 29, 2025 00:15January 29, 2025 03:153h6,52820K
2November 14, 2025 12:15November 14, 2025 14:152h1,635999
3July 9, 2025 13:15July 9, 2025 19:005h 45m1,5911,168
4April 4, 2025 13:00April 4, 2025 18:305h 30m1,449392
5January 29, 2025 11:15January 29, 2025 11:3015m937234
6December 17, 2025 13:15December 17, 2025 18:004h 45m928482
7January 23, 2025 11:30January 23, 2025 19:007h 30m767396
8May 5, 2025 17:15May 5, 2025 19:452h 30m744936
9March 17, 2025 00:00March 17, 2025 04:454h 45m6381,472
10July 5, 2025 08:45July 5, 2025 13:304h 45m612474

Outage episodes by size in 2025: 33 reached 100+ customers, 4 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 Dorchester County reported on EIA Form 861 for 2025, 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 Power20241.7 hrs0.7362 min0.61
Choptank Electric Cooperative, Inc20242.4 hrs1.302.0 hrs1.17

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 2025; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 18,093 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. Dorchester County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Dorchester County, MD annual power outage report, 2025, 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/2025/maryland/dorchester-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON