County annual report · FIPS 51059
2025 Fairfax County, VA Power Outage Report
In 2025, customers in Fairfax County, VA went without power for an average of 4.9 hours, a total of 2.5M customer-hours (Virginia average 8.6 hours). That ranks 92nd worst of 131 Virginia counties and 1531st of 3,000 nationally.
Compared with VA, the US and 2024
Coverage line is EAGLE-I's share of Virginia customers tracked each year.
Biggest outages in Fairfax County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 11, 2025 09:00 | June 29, 2025 10:45 | 18d 1h | 72,758 | 718K |
| 2 | May 16, 2025 10:45 | May 22, 2025 02:00 | 5d 15h | 32,277 | 599K |
| 3 | February 16, 2025 11:30 | February 18, 2025 12:45 | 2d 1h | 20,813 | 114K |
| 4 | June 29, 2025 11:30 | July 11, 2025 02:45 | 11d 15h | 11,782 | 125K |
| 5 | February 6, 2025 04:30 | February 7, 2025 08:45 | 1d 4h | 9,533 | 65K |
| 6 | July 12, 2025 18:00 | July 14, 2025 08:15 | 1d 14h | 9,271 | 35K |
| 7 | April 24, 2025 12:15 | April 28, 2025 23:30 | 4d 11h | 7,748 | 23K |
| 8 | August 7, 2025 04:30 | August 21, 2025 09:00 | 14d 4h | 7,705 | 45K |
| 9 | March 30, 2025 12:15 | April 2, 2025 02:15 | 2d 14h | 7,052 | 24K |
| 10 | January 31, 2025 08:45 | February 2, 2025 06:15 | 1d 21h | 6,251 | 28K |
Outage episodes by size in 2025: 189 reached 100+ customers, 78 reached 1,000+ customers, 4 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 2025, 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 | 2024 | 1.6 hrs | 0.86 | 62 min | 0.77 |
| 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 2025; 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, 2025, 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/2025/virginia/fairfax-county