Frederick CountyPower Outage History
What this grade means
Top 20% most reliable nationally — infrequent, short outages. This county ranks in the most reliable fifth of all US counties in our dataset, based on 12 years of real DOE outage records: outages happen less often here, and when they do occur they tend to be resolved quickly compared to the rest of the country. Baseline outage risk is low, though a severe local storm can still occasionally cause a longer-than-usual outage regardless of the long-term track record.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Feb 13, 2019 | 38 hrs | 6,659 (7%) | Winter Weather |
| Feb 12, 2019 | 13 hrs | 6,646 (7%) | Winter Weather |
| Dec 15, 2022 | 52 hrs | 6,135 (7%) | Ice Storm |
| Feb 12, 2019 | 5 hrs | 5,656 (6%) | Winter Weather |
| Feb 13, 2017 | 6 hrs | 4,936 (5%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Frederick County, Virginia that day.
Over the 12 years from 2014 to 2025, Frederick County recorded 485 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Frederick County started February 13, 2019 (Winter Weather), lasting 38 hours and leaving up to 6,659 customers without power (7% of the county) at its peak.
July has historically been the worst month for outages in Frederick County, with 65 events recorded during that month across the dataset.
Based on this history, Frederick County earns a Reliability Grade of A, placing it in the 86th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Virginia
Counties with the closest reliability grade and national percentile to Frederick County.
| County | Grade | National percentile |
|---|---|---|
| Richmond County | A | 86th |
| Prince William County | A | 88th |
| Staunton County | A | 82nd |
| Winchester County | A | 93rd |
| Accomack County | B | 78th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Frederick County?
Between 2014 and 2025, Frederick County recorded 485 outage events, averaging 2.4 hours each.
What is Frederick County's reliability grade?
Frederick County has a Reliability Grade of A, in the 86th national percentile.
What was the worst power outage in Frederick County?
The worst outage on record started February 13, 2019 (Winter Weather), lasting 38 hours and affecting up to 6,659 customers.