Power outage history
Madison County New York
6.3hours
without power for the average customer in a typical year, 2018–2025
30th 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 Madison's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2025 was the worst well-recorded year, at 10 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Madison, 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 |
|---|---|---|---|---|---|---|
| Jun 22, 2025 | Thunderstorms | 13,208 | 39% | 2.4 d | 36 h | 216k |
| Apr 19, 2022 | Winter storm | 3,135 | 9% | 3.5 d | 8.2 h | 150k |
| Jul 15, 2024 | Thunderstorms | 6,034 | 18% | 2.3 d | 28 h | 96k |
| May 18, 2017 | Thunderstorms | 4,273 | 13% | 25 h | 22 h | 45k |
| Mar 2, 2018 | Winter storm | 3,754 | 11% | 29 h | 23 h | 44k |
| Oct 7, 2020 | Thunderstorms | 2,992 | 9% | 30 h | 28 h | 43k |
| Dec 11, 2021 | No storm report | 4,570 | 13% | 25 h | 15 h | 42k |
| Apr 4, 2018 | No storm report | 3,248 | 10% | 24 h | 21 h | 40k |
| Aug 9, 2024 | Hurricane Debby | 2,820 | 8% | 27 h | 22 h | 36k |
| Nov 22, 2024 | Winter storm | 3,408 | 10% | 40 h | 35 h | 32k |
| Feb 28, 2024 | Winter storm | 3,675 | 11% | 20 h | 16 h | 30k |
| Mar 16, 2025 | No storm report | 4,563 | 13% | 17 h | 15 h | 27k |
| Mar 26, 2021 | No storm report | 3,060 | 9% | 14 h | 9.0 h | 24k |
| Aug 5, 2024 | Thunderstorms | 3,547 | 10% | 21 h | 19 h | 24k |
| Apr 3, 2024 | No storm report | 1,652 | 5% | 31 h | – | 23k |
| Aug 13, 2016 | Thunderstorms | 2,095 | 6% | 25 h | 24 h | 22k |
| Jan 1, 2019 | No storm report | 10,291 | 30% | 14 h | 5.5 h | 21k |
| Jul 27, 2018 | Thunderstorms | 972 | 3% | 22 h | – | 19k |
| Jun 12, 2015 | Thunderstorms | 2,436 | 7% | 26 h | 24 h | 19k |
| Nov 1, 2019 | Flooding | 2,529 | 7% | 25 h | 24 h | 17k |
| Dec 5, 2017 | No storm report | 2,505 | 7% | 8.8 h | 12 h | 14k |
| Jun 30, 2024 | Thunderstorms | 1,683 | 5% | 8.8 h | – | 13k |
| Apr 16, 2018 | No storm report | 824 | 2% | 24 h | – | 13k |
| Apr 29, 2025 | Thunderstorms | 1,844 | 5% | 17 h | 20 h | 13k |
| Feb 25, 2019 | Windstorm | 1,822 | 5% | 14 h | 7.0 h | 13k |
| Mar 7, 2022 | No storm report | 781 | 2% | 18 h | – | 12k |
| Dec 25, 2022 | No storm report | 2,579 | 8% | 6.5 h | 6.5 h | 11k |
| May 29, 2016 | No storm report | 2,922 | 9% | 5.8 h | 4.5 h | 10.0k |
| Apr 30, 2020 | No storm report | 1,362 | 4% | 8.0 h | – | 9.3k |
| Feb 2, 2021 | Winter storm | 1,928 | 6% | 7.8 h | 7.5 h | 8.8k |
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 Madison from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 42%
- Thunderstorms 32%
- Winter storm 20%
- Tropical storm 2.5%
- Flooding 1.6%
- Windstorm 0.9%
Who keeps the lights on
Utilities serving Madison
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 |
| Otsego Electric Coop, Inc | NY | – | – | – | – | 44k |
| City of Sherrill | NY | – | – | – | – | 25k |
| Village of Hamilton | NY | – | – | – | – | 22k |
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.
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 34,017 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 →