Addison 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 23, 2022 | 26 hrs | 9,890 (57%) | Winter Storm |
| Jan 10, 2024 | 62 hrs | 7,286 (42%) | Winter Storm |
| Jul 23, 2016 | 28 hrs | 7,133 (41%) | Thunderstorm Wind |
| Dec 24, 2022 | 62 hrs | 6,497 (38%) | High Wind |
| Oct 30, 2017 | 48 hrs | 6,476 (37%) | Tropical Storm Philippe |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Addison County, Vermont that day.
Over the 12 years from 2014 to 2025, Addison County recorded 856 distinct power outage events, averaging 2.6 hours per event.
The single worst outage on record in Addison County started December 23, 2022 (Winter Storm), lasting 26 hours and leaving up to 9,890 customers without power (57% of the county) at its peak.
November has historically been the worst month for outages in Addison County, with 115 events recorded during that month across the dataset.
Based on this history, Addison County earns a Reliability Grade of F, placing it in the 15th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Vermont
Counties with the closest reliability grade and national percentile to Addison County.
| County | Grade | National percentile |
|---|---|---|
| Windsor County | F | 11th |
| Essex County | F | 9th |
| Orange County | F | 7th |
| Orleans County | D | 24th |
| Rutland County | D | 25th |
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 Addison County?
Between 2014 and 2025, Addison County recorded 856 outage events, averaging 2.6 hours each.
What is Addison County's reliability grade?
Addison County has a Reliability Grade of F, in the 15th national percentile.
What was the worst power outage in Addison County?
The worst outage on record started December 23, 2022 (Winter Storm), lasting 26 hours and affecting up to 9,890 customers.