Niagara 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 |
|---|---|---|---|
| Mar 8, 2017 | 78 hrs | 28,719 (27%) | High Wind |
| Dec 11, 2021 | 53 hrs | 24,256 (23%) | High Wind |
| Dec 11, 2021 | 3 hrs | 21,113 (20%) | High Wind |
| Jul 10, 2018 | <1 hr | 19,786 (19%) | Unnamed event |
| May 4, 2018 | 22 hrs | 15,958 (15%) | High Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Niagara County, New York that day.
Over the 12 years from 2014 to 2025, Niagara County recorded 877 distinct power outage events, averaging 2.2 hours per event.
The single worst outage on record in Niagara County started March 8, 2017 (High Wind), lasting 78 hours and leaving up to 28,719 customers without power (27% of the county) at its peak.
June has historically been the worst month for outages in Niagara County, with 112 events recorded during that month across the dataset.
Based on this history, Niagara County earns a Reliability Grade of C, placing it in the 58th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in New York
Counties with the closest reliability grade and national percentile to Niagara County.
| County | Grade | National percentile |
|---|---|---|
| Erie County | C | 59th |
| Livingston County | C | 60th |
| Cortland County | C | 57th |
| Tompkins County | B | 61st |
| Clinton County | C | 55th |
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 Niagara County?
Between 2014 and 2025, Niagara County recorded 877 outage events, averaging 2.2 hours each.
What is Niagara County's reliability grade?
Niagara County has a Reliability Grade of C, in the 58th national percentile.
What was the worst power outage in Niagara County?
The worst outage on record started March 8, 2017 (High Wind), lasting 78 hours and affecting up to 28,719 customers.