County annual report · FIPS 24021
2015 Frederick County, MD Power Outage Report
In 2015, customers in Frederick County, MD went without power for an average of 2.8 hours, a total of 372K customer-hours (Maryland average 2.0 hours). That ranks 6th worst of 24 Maryland counties and 962nd of 2,484 nationally.
Compared with MD, the US
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Frederick County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 31, 2015 10:30 | May 31, 2015 17:30 | 7h | 9,606 | 18K |
| 2 | June 18, 2015 20:30 | June 19, 2015 18:00 | 21h 30m | 8,410 | 10K |
| 3 | April 25, 2015 21:45 | April 26, 2015 04:15 | 6h 30m | 5,410 | 11K |
| 4 | February 15, 2015 08:00 | February 16, 2015 07:00 | 23h | 5,406 | 13K |
| 5 | June 8, 2015 22:45 | June 10, 2015 06:45 | 1d 8h | 4,920 | 15K |
| 6 | February 2, 2015 18:00 | February 3, 2015 05:00 | 11h | 4,752 | 26K |
| 7 | February 19, 2015 16:15 | February 20, 2015 00:30 | 8h 15m | 4,394 | 6,007 |
| 8 | January 3, 2015 10:45 | January 3, 2015 14:30 | 3h 45m | 3,784 | 6,286 |
| 9 | February 21, 2015 18:15 | February 21, 2015 22:00 | 3h 45m | 3,522 | 4,093 |
| 10 | May 31, 2015 21:00 | June 2, 2015 18:00 | 1d 21h | 3,478 | 26K |
Outage episodes by size in 2015: 139 reached 100+ customers, 37 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 2015, 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 | 2015 | 2.2 hrs | 0.96 | 2.1 hrs | 0.95 |
| 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 2015; 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, 2015, 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/2015/maryland/frederick-county