Onondaga County Power Outage History
2014–2025 · New York
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 |
|---|---|---|---|
| Jan 15, 2022 | 6 hrs | 20,532 (9%) | Extreme Cold/Wind Chill |
| Oct 7, 2020 | 23 hrs | 19,252 (9%) | Thunderstorm Wind |
| May 29, 2016 | 7 hrs | 15,897 (7%) | Thunderstorm Wind |
| Mar 16, 2025 | 26 hrs | 14,895 (7%) | Thunderstorm Wind |
| Jul 15, 2024 | 39 hrs | 14,011 (6%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, Onondaga County recorded 1,833 distinct power outage events, averaging 2.0 hours per event.
The single worst outage on record in Onondaga County started January 15, 2022 (Extreme Cold/Wind Chill), lasting 6 hours and leaving up to 20,532 customers without power (9% of the county) at its peak.
June has historically been the worst month for outages in Onondaga County, with 237 events recorded during that month across the dataset.
Based on this history, Onondaga County earns a Reliability Grade of B, placing it in the 76th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Onondaga County's outage profile
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Outage-prep kit
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Similar counties in New York
Counties with the closest reliability grade and national percentile to Onondaga County.
| County | Grade | National percentile |
|---|---|---|
| Ontario County | B | 71st |
| Richmond County | A | 84th |
| Chautauqua County | B | 64th |
| Tompkins County | B | 61st |
| Queens County | A | 91st |
FAQ
How often does power go out in Onondaga County?
Between 2014 and 2025, Onondaga County recorded 1,833 outage events, averaging 2.0 hours each.
What is Onondaga County's reliability grade?
Onondaga County has a Reliability Grade of B, in the 76th national percentile.
What was the worst power outage in Onondaga County?
The worst outage on record started January 15, 2022 (Extreme Cold/Wind Chill), lasting 6 hours and affecting up to 20,532 customers.