County annual report · FIPS 24021
2022 Frederick County, MD Power Outage Report
In 2022, customers in Frederick County, MD went without power for an average of 3.6 hours, a total of 475K customer-hours (Maryland average 5.5 hours). That ranks 14th worst of 24 Maryland counties and 1764th of 2,976 nationally.
Compared with MD, the US and 2021
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Frederick County, 2022
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 8, 2022 20:00 | December 8, 2022 20:30 | 30m | 17,733 | 4,435 |
| 2 | December 23, 2022 10:15 | December 28, 2022 05:15 | 4d 19h | 7,541 | 143K |
| 3 | August 6, 2022 10:00 | August 6, 2022 13:30 | 3h 30m | 4,487 | 7,485 |
| 4 | January 17, 2022 01:30 | January 18, 2022 22:00 | 1d 20h | 4,407 | 37K |
| 5 | May 21, 2022 13:30 | May 22, 2022 00:45 | 11h 15m | 3,904 | 11K |
| 6 | November 26, 2022 15:00 | November 26, 2022 17:15 | 2h 15m | 3,732 | 6,159 |
| 7 | July 18, 2022 18:30 | July 19, 2022 04:00 | 9h 30m | 3,319 | 6,144 |
| 8 | February 18, 2022 03:15 | February 20, 2022 21:00 | 2d 17h | 3,317 | 20K |
| 9 | July 12, 2022 15:00 | July 15, 2022 09:30 | 2d 18h | 2,559 | 19K |
| 10 | September 7, 2022 08:00 | September 7, 2022 18:00 | 10h | 2,474 | 3,272 |
Outage episodes by size in 2022: 150 reached 100+ customers, 32 reached 1,000+ customers, 1 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 2022, 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 | 2022 | 8.1 hrs | 1.58 | 3.2 hrs | 1.19 |
| 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 99% of Maryland's customers in 2022; 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, 2022, 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/2022/maryland/frederick-county