Chemung CountyPower Outage History
What this grade means
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 10, 2018 | <1 hr | 39,593 (87%) | Unnamed event |
| Jul 15, 2024 | 68 hrs | 15,596 (34%) | Thunderstorm Wind |
| Aug 12, 2023 | 3 hrs | 8,257 (18%) | Thunderstorm Wind |
| Mar 16, 2025 | 45 hrs | 6,983 (15%) | Thunderstorm Wind |
| Jul 25, 2016 | 8 hrs | 5,340 (12%) | Drought |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Chemung County, New York that day.
Over the 12 years from 2014 to 2025, Chemung County recorded 608 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in Chemung County started July 10, 2018, lasting less than 1 hour and leaving up to 39,593 customers without power (87% of the county) at its peak.
June has historically been the worst month for outages in Chemung County, with 83 events recorded during that month across the dataset.
Based on this history, Chemung County earns a Reliability Grade of C, placing it in the 54th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in New York
Counties with the closest reliability grade and national percentile to Chemung County.
| County | Grade | National percentile |
|---|---|---|
| St. Lawrence County | C | 55th |
| Clinton County | C | 55th |
| Suffolk County | C | 52nd |
| Cortland County | C | 57th |
| Nassau County | C | 51st |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Chemung County?
Between 2014 and 2025, Chemung County recorded 608 outage events, averaging 2.7 hours each.
What is Chemung County's reliability grade?
Chemung County has a Reliability Grade of C, in the 54th national percentile.
What was the worst power outage in Chemung County?
The worst outage on record started July 10, 2018, lasting less than 1 hour and affecting up to 39,593 customers.