Winchester 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 |
|---|---|---|---|
| May 22, 2016 | 3 hrs | 4,224 (14%) | Unnamed event |
| Feb 13, 2017 | 5 hrs | 4,216 (13%) | High Wind |
| Jun 29, 2016 | <1 hr | 4,188 (13%) | Unnamed event |
| Oct 20, 2021 | 2 hrs | 3,433 (11%) | Unnamed event |
| Jul 11, 2017 | 3 hrs | 3,364 (11%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Winchester County, Virginia that day.
Over the 11 years from 2015 to 2025, Winchester County recorded 208 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Winchester County started May 22, 2016, lasting 3 hours and leaving up to 4,224 customers without power (14% of the county) at its peak.
June has historically been the worst month for outages in Winchester County, with 30 events recorded during that month across the dataset.
Based on this history, Winchester County earns a Reliability Grade of A, placing it in the 93rd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Virginia
Counties with the closest reliability grade and national percentile to Winchester County.
| County | Grade | National percentile |
|---|---|---|
| Radford County | A | 95th |
| Manassas Park County | A | 96th |
| Prince William County | A | 88th |
| Frederick County | A | 86th |
| Richmond County | A | 86th |
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 Winchester County?
Between 2015 and 2025, Winchester County recorded 208 outage events, averaging 1.9 hours each.
What is Winchester County's reliability grade?
Winchester County has a Reliability Grade of A, in the 93rd national percentile.
What was the worst power outage in Winchester County?
The worst outage on record started May 22, 2016, lasting 3 hours and affecting up to 4,224 customers.