County annual report · FIPS 24021
2023 Frederick County, MD Power Outage Report
In 2023, customers in Frederick County, MD went without power for an average of 2.1 hours, a total of 282K customer-hours (Maryland average 3.6 hours). That ranks 16th worst of 24 Maryland counties and 2231st of 2,977 nationally.
Compared with MD, the US and 2022
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Frederick County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 1, 2023 14:45 | December 2, 2023 01:45 | 11h | 7,100 | 6,317 |
| 2 | August 7, 2023 19:45 | August 10, 2023 09:15 | 2d 13h | 6,470 | 42K |
| 3 | April 1, 2023 18:45 | April 3, 2023 00:00 | 1d 5h | 6,308 | 23K |
| 4 | September 7, 2023 16:15 | September 9, 2023 01:45 | 1d 9h | 4,366 | 9,250 |
| 5 | December 6, 2023 08:00 | December 6, 2023 20:30 | 12h 30m | 3,987 | 4,452 |
| 6 | May 24, 2023 11:00 | May 24, 2023 16:30 | 5h 30m | 3,756 | 3,777 |
| 7 | December 14, 2023 14:00 | December 14, 2023 18:45 | 4h 45m | 2,937 | 2,216 |
| 8 | October 29, 2023 09:00 | October 30, 2023 06:30 | 21h 30m | 2,900 | 8,763 |
| 9 | April 21, 2023 16:15 | April 22, 2023 17:45 | 1d 1h | 2,336 | 8,426 |
| 10 | February 3, 2023 14:00 | February 4, 2023 04:45 | 14h 45m | 2,279 | 6,538 |
Outage episodes by size in 2023: 119 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 2023, 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 | 2023 | 3.5 hrs | 1.11 | 2.5 hrs | 0.98 |
| 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 2023; 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, 2023, 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/2023/maryland/frederick-county