2021 Maryland Power Outage Report
In 2021, the average Maryland customer went without power for about 2.5 hours, the 39th worst of 51 states (US average 8.4 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.
Avg hrs / customer
2.5
vs prior year
▲ 15%
vs 2020
Customer-hours out
6.7M
Peak customers out
60,716
across the state at once
EAGLE-I coverage
99%
of MD customers
Counties reporting
24
Maryland year over year
All 24 Maryland counties, 2021
Ranked by average hours without power per customer. Each county links to its annual report.
| # | County | Hrs / customer | Customer-hours | Customers | Peak out | Events |
|---|---|---|---|---|---|---|
| 1 | Garrett County | 6.9 | 93K | 13,588 | 4,623 | 422 |
| 2 | Allegany County | 5.0 | 163K | 32,504 | 6,919 | 543 |
| 3 | Baltimore city | 3.9 | 1.1M | 277,924 | 15,390 | 175 |
| 4 | St. Mary's County | 3.4 | 193K | 55,898 | 9,252 | 882 |
| 5 | Calvert County | 3.2 | 127K | 39,458 | 8,069 | 674 |
| 6 | Carroll County | 3.0 | 216K | 71,073 | 3,352 | 557 |
| 7 | Washington County | 2.9 | 187K | 65,276 | 7,558 | 661 |
| 8 | Baltimore County | 2.8 | 1.0M | 370,224 | 20,948 | 203 |
| 9 | Dorchester County | 2.7 | 48K | 18,093 | 4,905 | 576 |
| 10 | Anne Arundel County | 2.6 | 664K | 253,751 | 23,020 | 340 |
| 11 | Cecil County | 2.5 | 145K | 57,202 | 6,146 | 726 |
| 12 | Frederick County | 2.5 | 335K | 132,173 | 7,247 | 784 |
| 13 | Charles County | 2.4 | 178K | 73,494 | 8,391 | 940 |
| 14 | Prince George's County | 2.3 | 799K | 349,773 | 21,198 | 501 |
| 15 | Harford County | 2.1 | 236K | 112,536 | 4,931 | 477 |
| 16 | Montgomery County | 1.9 | 745K | 395,748 | 42,080 | 649 |
| 17 | Worcester County | 1.8 | 58K | 31,542 | 9,763 | 834 |
| 18 | Kent County | 1.8 | 20K | 10,903 | 2,811 | 442 |
| 19 | Howard County | 1.3 | 195K | 146,094 | 3,398 | 457 |
| 20 | Queen Anne's County | 1.3 | 33K | 26,465 | 3,135 | 637 |
| 21 | Caroline County | 1.1 | 19K | 17,587 | 1,693 | 510 |
| 22 | Somerset County | 0.9 | 13K | 14,318 | 704 | 439 |
| 23 | Talbot County | 0.8 | 24K | 29,180 | 2,683 | 431 |
| 24 | Wicomico County | 0.7 | 43K | 61,546 | 4,482 | 819 |
Biggest Maryland outages of 2021
Up to 25 county outage episodes with the most customers out at once.
| # | County | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|---|
| 1 | Montgomery County, MD | October 8, 2021 12:15 | October 9, 2021 17:30 | 1d 5h | 42,080 | 15K |
| 2 | Anne Arundel County, MD | June 30, 2021 10:00 | July 31, 2021 06:45 | 30d 20h | 23,020 | 226K |
| 3 | Prince George's County, MD | June 29, 2021 08:45 | July 10, 2021 23:30 | 11d 14h | 21,198 | 257K |
| 4 | Baltimore County, MD | June 29, 2021 17:45 | July 25, 2021 11:45 | 25d 18h | 20,948 | 367K |
| 5 | Baltimore city, MD | August 9, 2021 12:00 | August 28, 2021 14:15 | 19d 2h | 15,390 | 372K |
| 6 | Montgomery County, MD | August 30, 2021 10:45 | August 31, 2021 02:00 | 15h 15m | 12,912 | 5,284 |
| 7 | Montgomery County, MD | June 21, 2021 03:45 | June 24, 2021 02:45 | 2d 23h | 12,270 | 28K |
| 8 | Montgomery County, MD | August 9, 2021 12:15 | August 16, 2021 04:30 | 6d 16h | 11,763 | 152K |
| 9 | Anne Arundel County, MD | April 30, 2021 11:15 | May 3, 2021 11:30 | 3d | 9,948 | 66K |
| 10 | Worcester County, MD | October 20, 2021 12:00 | October 20, 2021 17:45 | 5h 45m | 9,763 | 8,547 |
| 11 | St. Mary's County, MD | August 10, 2021 08:00 | August 10, 2021 09:00 | 1h | 9,252 | 7,818 |
| 12 | Montgomery County, MD | July 1, 2021 10:00 | July 3, 2021 09:00 | 1d 23h | 8,568 | 49K |
| 13 | Charles County, MD | June 3, 2021 17:45 | June 4, 2021 06:30 | 12h 45m | 8,391 | 17K |
| 14 | Calvert County, MD | September 15, 2021 00:45 | September 15, 2021 19:15 | 18h 30m | 8,069 | 12K |
| 15 | Baltimore County, MD | June 19, 2021 11:00 | June 29, 2021 17:00 | 10d 6h | 7,873 | 44K |
| 16 | Baltimore city, MD | April 25, 2021 09:00 | May 7, 2021 02:30 | 11d 17h | 7,828 | 34K |
| 17 | Montgomery County, MD | August 24, 2021 12:00 | August 26, 2021 05:45 | 1d 17h | 7,686 | 2,932 |
| 18 | Washington County, MD | June 21, 2021 12:15 | June 23, 2021 22:45 | 2d 10h | 7,558 | 71K |
| 19 | Baltimore County, MD | May 20, 2021 11:30 | May 31, 2021 21:15 | 11d 9h | 7,268 | 46K |
| 20 | Frederick County, MD | May 26, 2021 23:30 | May 28, 2021 04:45 | 1d 5h | 7,247 | 33K |
| 21 | Charles County, MD | August 13, 2021 19:45 | August 15, 2021 21:00 | 2d 1h | 7,169 | 8,096 |
| 22 | St. Mary's County, MD | February 18, 2021 16:00 | February 20, 2021 03:45 | 1d 11h | 7,105 | 42K |
| 23 | Baltimore County, MD | April 30, 2021 08:30 | May 4, 2021 00:15 | 3d 15h | 7,064 | 55K |
| 24 | Anne Arundel County, MD | April 18, 2021 15:15 | April 23, 2021 10:45 | 4d 19h | 6,999 | 23K |
| 25 | Allegany County, MD | August 23, 2021 18:30 | August 23, 2021 23:30 | 5h | 6,919 | 6,492 |
EAGLE-I tracked about 99% of Maryland's electricity customers in 2021; outages at utilities it does not see are not counted. Hours per customer divide outage customer-minutes by modeled county customers.
Part of the 2021 US Power Outage Report.
Data from DOE EAGLE-I, every source we read.