County annual report · FIPS 51153
2018 Prince William County, VA Power Outage Report
In 2018, customers in Prince William County, VA went without power for an average of 3.6 hours, a total of 814K customer-hours (Virginia average 18.7 hours). That ranks 112th worst of 124 Virginia counties and 1337th 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 Prince William 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 06:15 | March 6, 2018 01:00 | 3d 18h | 32,321 | 626K |
| 2 | May 14, 2018 21:00 | May 16, 2018 03:00 | 1d 6h | 7,403 | 18K |
| 3 | October 10, 2018 23:00 | October 11, 2018 00:45 | 1h 45m | 4,509 | 5,726 |
| 4 | September 9, 2018 20:30 | September 10, 2018 02:15 | 5h 45m | 4,003 | 2,541 |
| 5 | November 1, 2018 12:30 | November 2, 2018 08:30 | 20h | 3,963 | 5,688 |
| 6 | September 18, 2018 07:45 | September 20, 2018 17:45 | 2d 10h | 3,777 | 3,565 |
| 7 | September 9, 2018 03:30 | September 9, 2018 19:00 | 15h 30m | 3,773 | 12K |
| 8 | April 5, 2018 01:15 | April 5, 2018 19:00 | 17h 45m | 3,388 | 1,864 |
| 9 | June 12, 2018 04:30 | June 12, 2018 08:00 | 3h 30m | 3,181 | 11K |
| 10 | September 22, 2018 19:45 | September 23, 2018 02:45 | 7h | 3,071 | 2,321 |
Outage episodes by size in 2018: 118 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 Prince William 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 ÷ 225,231 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. Prince William County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Prince William 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/prince-william-county