County annual report · FIPS 51059
2023 Fairfax County, VA Power Outage Report
In 2023, customers in Fairfax County, VA went without power for an average of 2.9 hours, a total of 1.5M customer-hours (Virginia average 4.6 hours). That ranks 102nd worst of 130 Virginia counties and 1970th of 2,977 nationally.
Compared with VA, the US and 2022
Coverage line is EAGLE-I's share of Virginia customers tracked each year.
Biggest outages in Fairfax County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 26, 2023 11:15 | September 14, 2023 07:30 | 49d 20h | 26,150 | 623K |
| 2 | March 31, 2023 19:15 | April 4, 2023 02:00 | 3d 6h | 24,975 | 219K |
| 3 | July 10, 2023 11:15 | July 20, 2023 05:30 | 9d 18h | 12,500 | 56K |
| 4 | June 20, 2023 12:15 | June 26, 2023 06:30 | 5d 18h | 8,383 | 33K |
| 5 | December 18, 2023 00:45 | December 19, 2023 11:15 | 1d 10h | 8,037 | 38K |
| 6 | April 15, 2023 19:30 | April 24, 2023 23:30 | 9d 4h | 6,370 | 19K |
| 7 | February 16, 2023 13:30 | February 18, 2023 11:30 | 1d 22h | 6,128 | 18K |
| 8 | December 8, 2023 13:30 | December 9, 2023 06:00 | 16h 30m | 5,920 | 8,831 |
| 9 | May 24, 2023 21:30 | May 25, 2023 02:15 | 4h 45m | 5,540 | 2,758 |
| 10 | March 14, 2023 12:45 | March 16, 2023 09:45 | 1d 21h | 5,480 | 18K |
Outage episodes by size in 2023: 195 reached 100+ customers, 64 reached 1,000+ customers, 3 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 Fairfax County reported on EIA Form 861 for 2023, 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 | 2023 | 1.8 hrs | 0.88 | 40 min | 0.57 |
| 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 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 513,143 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. Fairfax County has data for 2015–2017, 2020–2025.
Cite this report
MassOutage (massoutage.com), Fairfax County, VA annual power outage report, 2023, 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/2023/virginia/fairfax-county