Fairfax County Power Outage History
2014–2025 · Virginia
Better than average — fewer or shorter outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 19, 2025 | 53 hrs | 72,758 (14%) | Flash Flood |
| Aug 10, 2021 | 38 hrs | 55,737 (11%) | Thunderstorm Wind |
| Jan 3, 2022 | 86 hrs | 48,982 (10%) | Winter Storm |
| May 16, 2025 | 50 hrs | 32,277 (6%) | Thunderstorm Wind |
| Apr 6, 2021 | 7 hrs | 31,801 (6%) | Unnamed event |
Over the 12 years from 2014 to 2025, Fairfax County recorded 3,264 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Fairfax County started June 19, 2025 (Flash Flood), lasting 53 hours and leaving up to 72,758 customers without power (14% of the county) at its peak.
June has historically been the worst month for outages in Fairfax County, with 380 events recorded during that month across the dataset.
Based on this history, Fairfax County earns a Reliability Grade of B, placing it in the 74th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Fairfax County's outage profile
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Outage-prep kit
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Similar counties in Virginia
Counties with the closest reliability grade and national percentile to Fairfax County.
| County | Grade | National percentile |
|---|---|---|
| Loudoun County | B | 75th |
| Covington County | B | 75th |
| Northampton County | B | 71st |
| Buena Vista County | B | 77th |
| Warren County | B | 70th |
FAQ
How often does power go out in Fairfax County?
Between 2014 and 2025, Fairfax County recorded 3,264 outage events, averaging 2.4 hours each.
What is Fairfax County's reliability grade?
Fairfax County has a Reliability Grade of B, in the 74th national percentile.
What was the worst power outage in Fairfax County?
The worst outage on record started June 19, 2025 (Flash Flood), lasting 53 hours and affecting up to 72,758 customers.