County annual report · FIPS 24043
2018 Washington County, MD Power Outage Report
In 2018, customers in Washington County, MD went without power for an average of 3.0 hours, a total of 197K customer-hours (Maryland average 5.5 hours). That ranks 18th worst of 23 Maryland counties and 1499th of 2,798 nationally.
Compared with MD, the US and 2017
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Washington County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 10, 2018 19:45 | July 11, 2018 00:00 | 4h 15m | 4,999 | 8,721 |
| 2 | March 2, 2018 05:15 | March 6, 2018 01:00 | 3d 19h | 3,195 | 42K |
| 3 | February 7, 2018 15:45 | February 9, 2018 04:00 | 1d 12h | 3,164 | 23K |
| 4 | February 20, 2018 15:30 | February 20, 2018 21:45 | 6h 15m | 2,363 | 2,383 |
| 5 | November 9, 2018 16:30 | November 10, 2018 02:15 | 9h 45m | 2,174 | 5,213 |
| 6 | May 27, 2018 05:45 | May 27, 2018 08:45 | 3h | 2,169 | 5,631 |
| 7 | August 17, 2018 20:15 | August 18, 2018 11:00 | 14h 45m | 1,802 | 2,623 |
| 8 | September 11, 2018 12:15 | September 12, 2018 05:15 | 17h | 1,724 | 7,672 |
| 9 | December 28, 2018 20:45 | December 28, 2018 23:00 | 2h 15m | 1,598 | 2,791 |
| 10 | August 24, 2018 13:45 | August 24, 2018 19:15 | 5h 30m | 1,430 | 2,158 |
Outage episodes by size in 2018: 81 reached 100+ customers, 15 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 2018, 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 | 2018 | 5.1 hrs | 1.34 | 2.5 hrs | 1.08 |
| 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 98% of Maryland's customers in 2018; 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, 2018, 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/2018/maryland/washington-county