County annual report · FIPS 51107
2017 Loudoun County, VA Power Outage Report
In 2017, customers in Loudoun County, VA went without power for an average of 1.3 hours, a total of 250K customer-hours (Virginia average 3.7 hours). That ranks 114th worst of 125 Virginia counties and 1900th of 2,786 nationally.
Compared with VA, the US and 2016
Coverage line is EAGLE-I's share of Virginia customers tracked each year.
Biggest outages in Loudoun 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 | August 11, 2017 21:00 | August 14, 2017 04:30 | 2d 7h | 6,592 | 7,551 |
| 2 | June 19, 2017 10:15 | June 21, 2017 09:30 | 1d 23h | 5,727 | 18K |
| 3 | January 19, 2017 20:00 | January 19, 2017 20:30 | 30m | 5,480 | 1,377 |
| 4 | June 24, 2017 19:45 | June 24, 2017 23:00 | 3h 15m | 5,228 | 3,394 |
| 5 | October 29, 2017 20:45 | October 31, 2017 00:00 | 1d 3h | 4,585 | 20K |
| 6 | August 3, 2017 23:00 | August 5, 2017 04:30 | 1d 5h | 4,561 | 17K |
| 7 | September 19, 2017 10:30 | September 19, 2017 15:45 | 5h 15m | 3,669 | 1,851 |
| 8 | July 5, 2017 11:00 | July 5, 2017 17:15 | 6h 15m | 3,598 | 2,211 |
| 9 | March 1, 2017 18:30 | March 2, 2017 19:00 | 1d | 3,336 | 9,520 |
| 10 | October 9, 2017 11:15 | October 10, 2017 01:45 | 14h 30m | 2,955 | 9,102 |
Outage episodes by size in 2017: 111 reached 100+ customers, 35 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 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 |
|---|---|---|---|---|---|
| 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 n/a of Virginia's customers in 2017; 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, 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/virginia/loudoun-county