Power outage history
Allegany County New York
6.7hours
without power for the average customer in a typical year, 2018–2025
28th most of 62 in New York close to 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 Allegany's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2018 was the worst well-recorded year, at 18 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Allegany, 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 |
|---|---|---|---|---|---|---|
| Mar 1, 2018 | Winter storm | 9,447 | 34% | 3.9 d | 2.4 d | 400k |
| May 1, 2017 | Thunderstorms | 8,489 | 31% | 30 h | 25 h | 128k |
| Jan 9, 2024 | Windstorm | 6,762 | 25% | 27 h | 25 h | 101k |
| Feb 16, 2016 | Winter storm | 10,167 | 37% | 34 h | 17 h | 94k |
| Sep 7, 2020 | Thunderstorms | 9,012 | 33% | 26 h | 10 h | 69k |
| Mar 2, 2017 | No storm report | 6,135 | 22% | 19 h | 2.5 h | 33k |
| Apr 4, 2018 | Windstorm | 1,803 | 7% | 29 h | 24 h | 26k |
| Dec 23, 2022 | No storm report | 3,359 | 12% | 16 h | 11 h | 25k |
| Feb 12, 2017 | No storm report | 3,199 | 12% | 14 h | 4.5 h | 24k |
| Mar 16, 2025 | Thunderstorms | 2,446 | 9% | 27 h | 25 h | 21k |
| Apr 1, 2023 | Thunderstorms | 1,531 | 6% | 25 h | 27 h | 19k |
| Dec 5, 2019 | No storm report | 2,575 | 9% | 7.5 h | 7.0 h | 15k |
| Nov 15, 2020 | Thunderstorms | 2,299 | 8% | 20 h | 19 h | 15k |
| Aug 11, 2020 | No storm report | 3,753 | 14% | 3.8 h | 3.0 h | 13k |
| Aug 13, 2016 | No storm report | 6,524 | 24% | 2.8 h | 1.8 h | 13k |
| Dec 2, 2019 | No storm report | 1,589 | 6% | 13 h | 9.8 h | 11k |
| Jul 13, 2021 | Thunderstorms | 1,434 | 5% | 17 h | 15 h | 11k |
| Apr 30, 2017 | No storm report | 3,862 | 14% | 6.2 h | 3.8 h | 11k |
| Jun 3, 2020 | Thunderstorms | 2,637 | 10% | 7.5 h | 2.0 h | 10k |
| Dec 27, 2015 | No storm report | 2,549 | 9% | 4.0 h | 3.5 h | 10k |
| Jan 4, 2017 | No storm report | 4,150 | 15% | 2.8 h | 2.0 h | 10k |
| Sep 5, 2017 | Thunderstorms | 3,489 | 13% | 5.5 h | 3.5 h | 10.0k |
| Jan 5, 2015 | No storm report | 2,539 | 9% | 3.8 h | 7.0 h | 9.5k |
| Jan 19, 2015 | No storm report | 3,100 | 11% | 3.2 h | 3.0 h | 9.2k |
| Dec 11, 2021 | Windstorm | 848 | 3% | 14 h | – | 8.7k |
| Jul 22, 2022 | No storm report | 2,655 | 10% | 4.2 h | 2.5 h | 8.7k |
| May 3, 2018 | No storm report | 2,521 | 9% | 3.8 h | 14 h | 8.4k |
| Mar 25, 2023 | No storm report | 1,258 | 5% | 12 h | – | 8.4k |
| Mar 8, 2017 | Windstorm | 1,583 | 6% | 8.2 h | 18 h | 8.1k |
| Apr 13, 2020 | Windstorm | 3,324 | 12% | 3.5 h | 2.0 h | 7.0k |
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 Allegany from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Winter storm 35%
- No storm on record 35%
- Thunderstorms 16%
- Windstorm 13%
Who keeps the lights on
Utilities serving Allegany
As each utility reports to the Energy Information Administration for its whole New York territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Niagara Mohawk Power Corp. | Investor Owned | 242 | 140 | 1.39 | 19.9 | 1.5M |
| New York State Elec & Gas Corp | Investor Owned | 302 | 146 | 1.85 | 22.6 | 794k |
| Rochester Gas & Electric Corp | Investor Owned | 133 | 89 | 1.22 | 22.0 | 354k |
| Village of Wellsville | NY | – | – | – | – | 19k |
| Village of Angelica | NY | – | – | – | – | 6.5k |
| Village of Andover | NY | – | – | – | – | 4.5k |
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
- Steuben 12 h
- Cattaraugus 10 h
- Potter, PA 8.4 h
- McKean, PA 7.9 h
- Allegany (this county) 6.7 h
- Wyoming 5.3 h
- Livingston 3.5 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 27,503 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 →