Power outage history
Addison County Vermont
9.5hours
without power for the average customer in a typical year, 2018–2025
6th most of 14 in Vermont 1.4× the national median
Every day since 2015
Eleven years, one night at a time
Each cell is a day. The brighter it is, the larger the share of Addison's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2022 was the worst well-recorded year, at 27 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Addison, hours without power per customer
The record
The biggest outages since 2015
Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.
| Began | Storm | Peak out | Share | Lasted | 90% restored | Customer-hours |
|---|---|---|---|---|---|---|
| Dec 23, 2022 | Windstorm | 9,890 | 57% | 3.7 d | 2.7 d | 345k |
| Oct 30, 2017 | Windstorm | 6,476 | 38% | 2.4 d | 2.4 d | 230k |
| Jan 9, 2024 | Windstorm | 7,286 | 42% | 2.6 d | 36 h | 124k |
| Aug 9, 2024 | Hurricane Debby | 4,979 | 29% | 46 h | 43 h | 109k |
| Jul 23, 2016 | Thunderstorms | 7,133 | 41% | 25 h | 19 h | 67k |
| Jan 13, 2024 | Windstorm | 3,808 | 22% | 37 h | 29 h | 47k |
| Nov 27, 2018 | Winter storm | 1,524 | 9% | 2.6 d | 18 h | 39k |
| Dec 16, 2022 | Winter storm | 2,312 | 13% | 46 h | 29 h | 37k |
| Apr 3, 2024 | Winter storm | 4,819 | 28% | 47 h | 17 h | 35k |
| Mar 14, 2023 | Winter storm | 1,764 | 10% | 32 h | 17 h | 27k |
| May 26, 2021 | Thunderstorms | 3,969 | 23% | 14 h | 12 h | 24k |
| Apr 16, 2018 | Windstorm | 1,616 | 9% | 34 h | 23 h | 15k |
| Apr 19, 2022 | Winter storm | 2,735 | 16% | 16 h | 12 h | 12k |
| Jul 13, 2023 | Thunderstorms | 1,023 | 6% | 20 h | 18 h | 12k |
| Apr 7, 2022 | No storm report | 1,266 | 7% | 19 h | 16 h | 12k |
| Jul 30, 2019 | Thunderstorms | 3,285 | 19% | 7.8 h | 5.8 h | 10k |
| Jul 10, 2024 | Thunderstorms | 973 | 6% | 13 h | 12 h | 7.4k |
| Sep 7, 2023 | No storm report | 993 | 6% | 11 h | 5.8 h | 7.2k |
| May 4, 2018 | No storm report | 1,394 | 8% | 8.8 h | 7.0 h | 7.1k |
| Apr 4, 2018 | No storm report | 610 | 4% | 17 h | – | 7.0k |
| Oct 23, 2016 | No storm report | 1,769 | 10% | 13 h | 30 min | 6.2k |
| Nov 27, 2015 | No storm report | 1,521 | 9% | 4.5 h | 4.2 h | 6.2k |
| May 23, 2021 | No storm report | 1,625 | 9% | 3.8 h | 48 min | 6.1k |
| Apr 18, 2017 | No storm report | 1,780 | 10% | 7.0 h | 7.0 h | 5.9k |
| Nov 1, 2017 | No storm report | 2,363 | 14% | 7.8 h | 20 h | 5.8k |
| Oct 31, 2024 | No storm report | 1,629 | 9% | 3.8 h | 48 min | 5.8k |
| Oct 30, 2025 | No storm report | 3,042 | 18% | 3.8 h | 1.5 h | 5.7k |
| Nov 12, 2021 | Windstorm | 1,686 | 10% | 9.0 h | 3.8 h | 5.6k |
| Jan 2, 2022 | No storm report | 1,023 | 6% | 5.5 h | 6.2 h | 5.6k |
| Mar 30, 2025 | Winter storm | 1,036 | 6% | 8.2 h | 4.2 h | 5.3k |
After the peak
How fast the lights come back
Each line is one major outage, from its peak. The amber line is the typical path.
When it happens
The outage clock
Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.
What was happening
Weather behind the outages
Each outage is matched to NOAA storm reports for Addison from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Windstorm 47%
- No storm on record 22%
- Winter storm 15%
- Tropical storm 9.6%
- Thunderstorms 5.9%
- Flooding 0.7%
Who keeps the lights on
Utilities serving Addison
As each utility reports to the Energy Information Administration for its whole Vermont territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Green Mountain Power Corp | Investor Owned | 265 | 190 | 1.75 | 23.3 | 228k |
| Vermont Electric Cooperative, Inc | Cooperative | 251 | 151 | 2.06 | 24.3 | 36k |
EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.
Next door
Neighbouring counties
- Essex, NY 17 h
- Orange 16 h
- Windsor 15 h
- Washington, NY 11 h
- Addison (this county) 9.5 h
- Washington 7.7 h
- Rutland 6.7 h
- Chittenden 2.3 h
About these numbers
Notes
Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 17,215 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →