Cortland County Power Outage History
2014–2025 · New York
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 25, 2017 | 1 hrs | 8,105 (34%) | Unnamed event |
| Mar 16, 2025 | 22 hrs | 6,507 (27%) | Unnamed event |
| Jul 10, 2024 | 22 hrs | 5,534 (23%) | Thunderstorm Wind |
| Feb 17, 2022 | 2 hrs | 4,936 (21%) | Unnamed event |
| Nov 1, 2019 | 5 hrs | 4,550 (19%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, Cortland County recorded 426 distinct power outage events, averaging 3.2 hours per event.
The single worst outage on record in Cortland County started September 25, 2017, lasting 1 hours and leaving up to 8,105 customers without power (34% of the county) at its peak.
March has historically been the worst month for outages in Cortland County, with 50 events recorded during that month across the dataset.
Based on this history, Cortland County earns a Reliability Grade of C, placing it in the 57th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in New York
Counties with the closest reliability grade and national percentile to Cortland County.
| County | Grade | National percentile |
|---|---|---|
| Niagara County | C | 58th |
| Clinton County | C | 55th |
| St. Lawrence County | C | 55th |
| Erie County | C | 59th |
| Livingston County | C | 60th |
FAQ
How often does power go out in Cortland County?
Between 2014 and 2025, Cortland County recorded 426 outage events, averaging 3.2 hours each.
What is Cortland County's reliability grade?
Cortland County has a Reliability Grade of C, in the 57th national percentile.
What was the worst power outage in Cortland County?
The worst outage on record started September 25, 2017, lasting 1 hours and affecting up to 8,105 customers.