Niagara 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 |
|---|---|---|---|
| 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 | 0 hrs | 19,786 (19%) | Unnamed event |
| May 4, 2018 | 22 hrs | 15,958 (15%) | High Wind |
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).
Sized for Niagara County's outage profile
See more picks in our Best Dual-Fuel Portable Generators for Power Outages roundup.
Champion Power Equipment 4375-Watt Dual Fuel RV Ready Portable Generator with Free 3-Year Warranty
Outage-prep kit
See our outage-prep guides.
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 |
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.