County annual report · FIPS 24021
2025 Frederick County, MD Power Outage Report
In 2025, customers in Frederick County, MD went without power for an average of 2.9 hours, a total of 381K customer-hours (Maryland average 4.2 hours). That ranks 18th worst of 24 Maryland counties and 2102nd of 3,000 nationally.
Compared with MD, the US and 2024
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Frederick County, 2025
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 25, 2025 05:00 | July 27, 2025 20:00 | 2d 15h | 4,749 | 9,592 |
| 2 | June 19, 2025 13:30 | June 21, 2025 01:00 | 1d 11h | 4,240 | 25K |
| 3 | February 20, 2025 18:00 | February 20, 2025 19:00 | 1h | 4,136 | 1,035 |
| 4 | February 16, 2025 20:30 | February 18, 2025 20:45 | 2d | 3,419 | 37K |
| 5 | April 20, 2025 02:30 | April 23, 2025 23:00 | 3d 20h | 2,994 | 43K |
| 6 | August 22, 2025 21:30 | August 23, 2025 17:45 | 20h 15m | 2,974 | 7,845 |
| 7 | September 14, 2025 12:15 | September 14, 2025 20:00 | 7h 45m | 2,821 | 8,757 |
| 8 | May 13, 2025 15:30 | May 15, 2025 03:00 | 1d 11h | 2,812 | 14K |
| 9 | May 16, 2025 13:00 | May 18, 2025 18:30 | 2d 5h | 2,717 | 19K |
| 10 | September 6, 2025 22:00 | September 7, 2025 10:15 | 12h 15m | 2,698 | 4,172 |
Outage episodes by size in 2025: 121 reached 100+ customers, 27 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 Frederick County reported on EIA Form 861 for 2025, 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 | 2024 | 3.7 hrs | 1.32 | 3.4 hrs | 1.28 |
| Thurmont Municipal Light Co | - | - | - | - | - |
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 ÷ 132,173 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. Frederick County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Frederick 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/frederick-county