County annual report · FIPS 24021
2017 Frederick County, MD Power Outage Report
In 2017, customers in Frederick County, MD went without power for an average of 1.6 hours, a total of 217K customer-hours (Maryland average 1.9 hours). That ranks 16th worst of 24 Maryland counties and 1770th of 2,786 nationally.
Compared with MD, the US and 2016
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Frederick County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 25, 2017 20:00 | February 26, 2017 01:45 | 5h 45m | 5,428 | 8,705 |
| 2 | February 12, 2017 23:30 | February 14, 2017 03:15 | 1d 3h | 4,820 | 15K |
| 3 | July 23, 2017 10:45 | July 23, 2017 23:00 | 12h 15m | 4,352 | 10K |
| 4 | August 18, 2017 20:30 | August 19, 2017 05:15 | 8h 45m | 4,118 | 4,126 |
| 5 | August 1, 2017 01:30 | August 2, 2017 06:30 | 1d 5h | 3,546 | 9,015 |
| 6 | September 24, 2017 12:00 | September 24, 2017 15:30 | 3h 30m | 2,595 | 1,392 |
| 7 | November 8, 2017 00:45 | November 8, 2017 13:15 | 12h 30m | 2,101 | 6,110 |
| 8 | January 20, 2017 00:00 | January 20, 2017 01:45 | 1h 45m | 1,901 | 2,542 |
| 9 | May 15, 2017 04:45 | May 15, 2017 17:45 | 13h | 1,753 | 3,511 |
| 10 | May 6, 2017 05:45 | May 6, 2017 06:00 | 15m | 1,588 | 397 |
Outage episodes by size in 2017: 120 reached 100+ customers, 28 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 2017, 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 | 2017 | 2.4 hrs | 1.01 | 2.3 hrs | 0.99 |
| 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 2017; 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, 2017, 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/2017/maryland/frederick-county