Windsor CountyPower Outage History
What this grade means
Bottom 20% least reliable nationally — frequent and/or long outages. This county ranks in the least reliable fifth of all US counties in our dataset: some combination of frequent outages, long restoration times, or customers affected puts it near the bottom nationally. Backup power is worth prioritizing here rather than treating it as optional.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Dec 16, 2022 | 95 hrs | 21,318 (56%) | Winter Storm |
| Nov 27, 2018 | 33 hrs | 13,372 (35%) | Unnamed event |
| Nov 28, 2018 | 82 hrs | 11,000 (29%) | Unnamed event |
| Nov 1, 2019 | 84 hrs | 8,359 (22%) | Unnamed event |
| Mar 10, 2024 | 37 hrs | 8,329 (22%) | Winter Storm |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Windsor County, Vermont that day.
Over the 12 years from 2014 to 2025, Windsor County recorded 1,041 distinct power outage events, averaging 3.1 hours per event.
The single worst outage on record in Windsor County started December 16, 2022 (Winter Storm), lasting 95 hours and leaving up to 21,318 customers without power (56% of the county) at its peak.
November has historically been the worst month for outages in Windsor County, with 128 events recorded during that month across the dataset.
Based on this history, Windsor County earns a Reliability Grade of F, placing it in the 11th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Vermont
Counties with the closest reliability grade and national percentile to Windsor County.
| County | Grade | National percentile |
|---|---|---|
| Essex County | F | 9th |
| Addison County | F | 15th |
| Orange County | F | 7th |
| Windham County | F | 2nd |
| Orleans County | D | 24th |
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 Windsor County?
Between 2014 and 2025, Windsor County recorded 1,041 outage events, averaging 3.1 hours each.
What is Windsor County's reliability grade?
Windsor County has a Reliability Grade of F, in the 11th national percentile.
What was the worst power outage in Windsor County?
The worst outage on record started December 16, 2022 (Winter Storm), lasting 95 hours and affecting up to 21,318 customers.