County annual report · FIPS 51107
2019 Loudoun County, VA Power Outage Report
In 2019, customers in Loudoun County, VA went without power for an average of 2.8 hours, a total of 522K customer-hours (Virginia average 6.4 hours). That ranks 109th worst of 128 Virginia counties and 1734th of 2,945 nationally.
Compared with VA, the US and 2018
Coverage line is EAGLE-I's share of Virginia customers tracked each year.
Biggest outages in Loudoun County, 2019
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 20, 2019 12:30 | July 23, 2019 21:00 | 3d 8h | 13,393 | 86K |
| 2 | February 24, 2019 19:15 | February 27, 2019 06:30 | 2d 11h | 12,156 | 40K |
| 3 | October 31, 2019 17:45 | November 2, 2019 05:15 | 1d 11h | 7,253 | 14K |
| 4 | July 6, 2019 21:30 | July 8, 2019 00:45 | 1d 3h | 7,170 | 19K |
| 5 | January 30, 2019 06:45 | January 30, 2019 20:15 | 13h 30m | 6,424 | 7,012 |
| 6 | August 17, 2019 23:45 | August 18, 2019 13:00 | 13h 15m | 6,349 | 37K |
| 7 | August 13, 2019 12:30 | August 13, 2019 19:45 | 7h 15m | 5,369 | 1,352 |
| 8 | May 23, 2019 18:15 | May 25, 2019 08:00 | 1d 13h | 5,127 | 24K |
| 9 | August 19, 2019 17:15 | August 22, 2019 05:00 | 2d 11h | 4,944 | 24K |
| 10 | July 17, 2019 20:00 | July 19, 2019 08:45 | 1d 12h | 4,761 | 13K |
Outage episodes by size in 2019: 136 reached 100+ customers, 40 reached 1,000+ customers, 2 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 Loudoun County reported on EIA Form 861 for 2019, 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 |
|---|---|---|---|---|---|
| Northern Virginia Elec Coop | 2016 | 46 min | 0.64 | 46 min | 0.64 |
| Virginia Electric & Power 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 97% of Virginia's customers in 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 187,874 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. Loudoun County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Loudoun County, VA annual power outage report, 2019, 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/2019/virginia/loudoun-county