Power outage history
Onondaga County New York
3.4hours
without power for the average customer in a typical year, 2018–2025
53rd most of 62 in New York 49% below 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 Onondaga's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2024 was the worst well-recorded year, at 4.2 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Onondaga, 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 |
|---|---|---|---|---|---|---|
| Jan 9, 2024 | No storm report | 6,840 | 5% | 27 h | 35 h | 101k |
| Aug 13, 2016 | Thunderstorms | 12,649 | 9% | 10 h | 8.8 h | 73k |
| Oct 7, 2020 | Thunderstorms | 19,252 | 14% | 9.8 h | 8.2 h | 70k |
| May 26, 2020 | No storm report | 13,807 | 10% | 13 h | 11 h | 70k |
| Mar 16, 2025 | Thunderstorms | 14,895 | 11% | 7.0 h | 4.5 h | 67k |
| Jul 5, 2017 | No storm report | 5,011 | 4% | 16 h | 12 h | 56k |
| Mar 2, 2018 | Winter storm | 5,843 | 4% | 14 h | 8.0 h | 48k |
| Jul 16, 2024 | Thunderstorms | 14,011 | 10% | 7.0 h | 6.0 h | 42k |
| Jul 13, 2022 | Thunderstorms | 6,015 | 4% | 17 h | 17 h | 42k |
| Nov 1, 2019 | No storm report | 7,050 | 5% | 9.5 h | 4.5 h | 41k |
| Oct 15, 2017 | Thunderstorms | 9,472 | 7% | 5.8 h | 4.2 h | 36k |
| Apr 4, 2018 | Windstorm | 6,490 | 5% | 10 h | 19 h | 35k |
| Feb 28, 2024 | Winter storm | 10,944 | 8% | 4.5 h | 3.0 h | 34k |
| Jan 11, 2017 | No storm report | 6,726 | 5% | 9.2 h | 5.8 h | 34k |
| Jan 1, 2019 | Windstorm | 8,250 | 6% | 7.5 h | 11 h | 32k |
| Feb 3, 2016 | No storm report | 5,789 | 4% | 9.5 h | 19 h | 31k |
| May 29, 2016 | Thunderstorms | 15,897 | 12% | 4.0 h | 2.0 h | 28k |
| Jan 15, 2022 | Winter storm | 13,118 | 10% | 3.8 h | 3.8 h | 27k |
| Jan 10, 2016 | No storm report | 7,797 | 6% | 8.5 h | 4.0 h | 26k |
| Jun 24, 2025 | No storm report | 6,255 | 5% | 8.5 h | 6.8 h | 24k |
| Jul 24, 2017 | Thunderstorms | 12,497 | 9% | 4.0 h | 3.5 h | 23k |
| Jul 15, 2024 | Thunderstorms | 2,943 | 2% | 11 h | – | 22k |
| Jun 21, 2021 | Thunderstorms | 6,496 | 5% | 4.8 h | 4.5 h | 22k |
| Sep 14, 2019 | No storm report | 7,375 | 5% | 3.8 h | 1.8 h | 21k |
| Sep 19, 2016 | No storm report | 8,684 | 6% | 3.0 h | 1.8 h | 21k |
| Jul 19, 2022 | No storm report | 2,250 | 2% | 8.8 h | – | 20k |
| Sep 9, 2015 | No storm report | 10,888 | 8% | 3.2 h | 2.2 h | 19k |
| May 30, 2017 | Thunderstorms | 5,939 | 4% | 5.2 h | 10 h | 19k |
| Jul 26, 2015 | No storm report | 5,946 | 4% | 6.0 h | 5.5 h | 19k |
| Jul 2, 2018 | Thunderstorms | 7,432 | 6% | 3.8 h | 3.0 h | 19k |
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 Onondaga from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 66%
- Thunderstorms 22%
- Winter storm 7.0%
- Windstorm 3.5%
- Tropical storm 1.2%
Who keeps the lights on
Utilities serving Onondaga
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 |
| Village of Skaneateles | NY | – | – | – | – | 15k |
| Village of Solvay | Municipal | – | – | – | 7.5 | 4.7k |
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
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 134,654 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 →