County annual report · FIPS 24043
2021 Washington County, MD Power Outage Report
In 2021, customers in Washington County, MD went without power for an average of 2.9 hours, a total of 187K customer-hours (Maryland average 2.5 hours). That ranks 7th worst of 24 Maryland counties and 1896th of 2,974 nationally.
Compared with MD, the US and 2020
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Washington County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 21, 2021 12:15 | June 23, 2021 22:45 | 2d 10h | 7,558 | 71K |
| 2 | March 31, 2021 15:15 | March 31, 2021 18:00 | 2h 45m | 3,893 | 2,518 |
| 3 | August 11, 2021 15:00 | August 12, 2021 16:45 | 1d 1h | 2,649 | 9,531 |
| 4 | April 21, 2021 12:30 | April 21, 2021 15:30 | 3h | 1,994 | 2,000 |
| 5 | April 21, 2021 19:30 | April 21, 2021 21:45 | 2h 15m | 1,994 | 506 |
| 6 | August 13, 2021 18:30 | August 15, 2021 04:45 | 1d 10h | 1,807 | 4,315 |
| 7 | July 17, 2021 20:30 | July 18, 2021 20:30 | 1d | 1,732 | 7,128 |
| 8 | June 25, 2021 20:45 | June 25, 2021 22:45 | 2h | 1,720 | 2,430 |
| 9 | May 22, 2021 17:00 | May 22, 2021 19:15 | 2h 15m | 1,442 | 2,648 |
| 10 | February 1, 2021 14:00 | February 2, 2021 01:00 | 11h | 1,409 | 1,070 |
Outage episodes by size in 2021: 69 reached 100+ customers, 16 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 Washington County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| The Potomac Edison Company | 2021 | 3.3 hrs | 1.26 | 2.9 hrs | 1.20 |
| Hagerstown Light Department | - | - | - | - | - |
| Town of Williamsport - (MD) | - | - | - | - | - |
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 ÷ 65,276 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. Washington County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Washington 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/washington-county