Chittenden County Power Outage History
2014–2025 · Vermont
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 |
|---|---|---|---|
| Oct 30, 2017 | 47 hrs | 21,446 (18%) | Tropical Storm Philippe |
| Aug 9, 2024 | 73 hrs | 18,305 (16%) | Hurricane Debby |
| Dec 23, 2022 | 24 hrs | 18,073 (16%) | Winter Storm |
| Apr 19, 2022 | 15 hrs | 11,317 (10%) | Winter Weather |
| Aug 21, 2021 | 2 hrs | 11,119 (10%) | Unnamed event |
Over the 12 years from 2014 to 2025, Chittenden County recorded 853 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Chittenden County started October 30, 2017 (Tropical Storm Philippe), lasting 47 hours and leaving up to 21,446 customers without power (18% of the county) at its peak.
November has historically been the worst month for outages in Chittenden County, with 148 events recorded during that month across the dataset.
Based on this history, Chittenden County earns a Reliability Grade of B, placing it in the 66th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Chittenden County's outage profile
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Outage-prep kit
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Similar counties in Vermont
Counties with the closest reliability grade and national percentile to Chittenden County.
| County | Grade | National percentile |
|---|---|---|
| Franklin County | C | 42nd |
| Lamoille County | C | 41st |
| Grand Isle County | D | 38th |
| Caledonia County | D | 35th |
| Bennington County | D | 28th |
FAQ
How often does power go out in Chittenden County?
Between 2014 and 2025, Chittenden County recorded 853 outage events, averaging 2.4 hours each.
What is Chittenden County's reliability grade?
Chittenden County has a Reliability Grade of B, in the 66th national percentile.
What was the worst power outage in Chittenden County?
The worst outage on record started October 30, 2017 (Tropical Storm Philippe), lasting 47 hours and affecting up to 21,446 customers.