County annual report · FIPS 51107
2018 Loudoun County, VA Power Outage Report
In 2018, customers in Loudoun County, VA went without power for an average of 5.6 hours, a total of 1.1M customer-hours (Virginia average 18.7 hours). That ranks 109th worst of 124 Virginia counties and 956th of 2,798 nationally.
Compared with VA, the US and 2017
Coverage line is EAGLE-I's share of Virginia customers tracked each year.
Biggest outages in Loudoun County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 2, 2018 01:30 | March 6, 2018 01:00 | 3d 23h | 26,910 | 731K |
| 2 | May 14, 2018 21:30 | May 18, 2018 07:00 | 3d 9h | 6,753 | 48K |
| 3 | August 30, 2018 22:45 | August 31, 2018 04:30 | 5h 45m | 6,379 | 11K |
| 4 | October 12, 2018 04:30 | October 13, 2018 20:15 | 1d 15h | 4,549 | 15K |
| 5 | November 15, 2018 17:15 | November 18, 2018 07:15 | 2d 14h | 4,127 | 58K |
| 6 | November 10, 2018 15:30 | November 11, 2018 18:00 | 1d 2h | 3,626 | 1,237 |
| 7 | July 21, 2018 18:30 | July 23, 2018 01:30 | 1d 7h | 3,597 | 3,378 |
| 8 | December 27, 2018 21:00 | December 28, 2018 08:30 | 11h 30m | 3,197 | 4,774 |
| 9 | June 28, 2018 11:45 | June 28, 2018 23:15 | 11h 30m | 3,133 | 12K |
| 10 | June 19, 2018 18:00 | June 20, 2018 17:45 | 23h 45m | 2,367 | 4,730 |
Outage episodes by size in 2018: 95 reached 100+ customers, 20 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 Loudoun County reported on EIA Form 861 for 2018, 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 96% of Virginia's customers in 2018; 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, 2018, 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/2018/virginia/loudoun-county