County annual report · FIPS 51107
2020 Loudoun County, VA Power Outage Report
In 2020, customers in Loudoun County, VA went without power for an average of 1.6 hours, a total of 300K customer-hours (Virginia average 6.1 hours). That ranks 114th worst of 129 Virginia counties and 2422nd of 3,019 nationally.
Compared with VA, the US and 2019
Coverage line is EAGLE-I's share of Virginia customers tracked each year.
Biggest outages in Loudoun County, 2020
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 7, 2020 02:45 | February 9, 2020 08:45 | 2d 6h | 6,864 | 29K |
| 2 | July 21, 2020 23:15 | July 22, 2020 03:45 | 4h 30m | 6,262 | 4,701 |
| 3 | June 4, 2020 23:30 | June 5, 2020 19:15 | 19h 45m | 5,316 | 16K |
| 4 | November 17, 2020 14:00 | November 18, 2020 22:30 | 1d 8h | 4,720 | 10K |
| 5 | September 2, 2020 23:45 | September 3, 2020 10:15 | 10h 30m | 4,399 | 7,868 |
| 6 | February 6, 2020 15:15 | February 6, 2020 23:15 | 8h | 4,377 | 6,631 |
| 7 | July 11, 2020 16:00 | July 12, 2020 03:30 | 11h 30m | 4,001 | 3,626 |
| 8 | November 1, 2020 21:45 | November 3, 2020 04:15 | 1d 6h | 3,786 | 11K |
| 9 | December 22, 2020 15:30 | December 23, 2020 03:00 | 11h 30m | 3,745 | 12K |
| 10 | October 12, 2020 08:45 | October 13, 2020 07:00 | 22h 15m | 3,729 | 3,002 |
Outage episodes by size in 2020: 110 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 Loudoun County reported on EIA Form 861 for 2020, 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 2020; 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, 2020, 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/2020/virginia/loudoun-county