County annual report · FIPS 51107
2015 Loudoun County, VA Power Outage Report
In 2015, customers in Loudoun County, VA went without power for an average of 0.9 hours, a total of 172K customer-hours (Virginia average 2.7 hours). That ranks 114th worst of 127 Virginia counties and 1816th of 2,484 nationally.
Compared with VA, the US
Coverage line is EAGLE-I's share of Virginia customers tracked each year.
Biggest outages in Loudoun County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 9, 2015 19:45 | October 10, 2015 08:00 | 12h 15m | 8,557 | 14K |
| 2 | July 22, 2015 16:15 | July 23, 2015 18:45 | 1d 2h | 4,715 | 1,563 |
| 3 | November 24, 2015 04:00 | November 24, 2015 06:45 | 2h 45m | 3,550 | 1,356 |
| 4 | June 20, 2015 23:00 | June 23, 2015 10:15 | 2d 11h | 3,280 | 2,916 |
| 5 | October 16, 2015 16:45 | October 16, 2015 22:30 | 5h 45m | 3,203 | 814 |
| 6 | November 12, 2015 21:30 | November 13, 2015 22:15 | 1d | 2,890 | 1,537 |
| 7 | October 24, 2015 16:00 | October 25, 2015 04:15 | 12h 15m | 2,326 | 4,259 |
| 8 | October 28, 2015 09:15 | October 29, 2015 07:00 | 21h 45m | 2,244 | 2,274 |
| 9 | December 29, 2015 15:45 | December 29, 2015 19:45 | 4h | 2,181 | 2,117 |
| 10 | July 3, 2015 12:15 | July 3, 2015 19:30 | 7h 15m | 2,178 | 859 |
Outage episodes by size in 2015: 95 reached 100+ customers, 22 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 2015, 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 | 2015 | 50 min | 0.76 | 50 min | 0.76 |
| 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 2015; 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, 2015, 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/2015/virginia/loudoun-county