Jefferson County, NY Power Outages
As of Nov 3, 2:00 AM EST, no power outages were reported in Jefferson County, New York by Niagara Mohawk Power Corp..
Jefferson County on the New York outage map
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- Limited data
Current outages
Weather alerts
No active outage-relevant weather alerts from the National Weather Service.
Jefferson County power outage history
Every significant outage recorded in Jefferson County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 251 significant power outages in Jefferson County, meaning events that left at least 1% of customers in the dark. The largest (Mar 2, 2022) left 39,726 customers (63.8% of the county) without power. NOAA recorded no major storm in the area at the time.
From 2018 to 2025, the average customer here lost about 4 hr 49 min of power per year, close to the New York average of 4 hr 22 min. That ranks 41st of 62 New York counties for outage time, where 1st has the most.
January is the riskiest month: it accounted for 40% of all customer outage time from 2018 to 2025. On 33 days in that period, at least 5% of customers were out at the same time. Outage time in Jefferson County has risen recently: about 6 hr 19 min per customer per year in 2022–2025, versus 3 hr 19 min in 2018–2021.
The most recent significant outage on record (Dec 27, 2025) affected 2,109 customers (3.4%) amid a winter storm.
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Mar 2, 2022 | 39,726(63.8%) | 1 | No major storm reported |
| 2 | Jan 10–14, 2024 | 31,424(50.5%) | 5 | High winds |
| 3 | Apr 25, 2025 | 23,306(37.4%) | 1 | No major storm reported |
| 4 | Jan 16, 2018 | 15,947(25.6%) | 1 | Winter storm |
| 5 | Jun 19–20, 2022 | 9,502(15.3%) | 2 | No major storm reported |
Hours without power per customer, by year
When outages happen
Source: DOE/ORNL EAGLE-I recorded electricity outages, 2014–2025 (CC BY 4.0), with likely causes from the NOAA NCEI Storm Events Database. EAGLE-I coverage was partial before 2018, so averages use 2018–2025. Peak counts are the highest number of customers out at one time.
Who provides electricity in Jefferson County?
Electric companies with service territory in Jefferson County (EIA-861, 2025)
| Utility | Type | Customers (NY) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| National Grid (Upstate New York) | Investor Owned | 1,724,153 | Reporting | |
| Village of Philadelphia - (NY) | Municipal | 706 | Not reporting | |
| Village of Theresa - (NY) | Municipal | 467 | Not reporting |
Customer counts are each utility's statewide total in New York. Source: U.S. Energy Information Administration, Form EIA-861 & Electric Power Annual.
Local outage news
No Jefferson County outage headlines in the past week.
Jefferson County power outage FAQ
Is the power out in Jefferson County right now?
No outages are currently reported for Jefferson County by participating utilities. If your power is out, report it to your electric company.
Which electric company serves Jefferson County?
According to EIA-861 service territory data, Niagara Mohawk Power Corp., Village of Philadelphia - (NY), Village of Theresa - (NY) provide electric service in Jefferson County, New York.
What was the worst power outage in Jefferson County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Mar 2, 2022. It peaked at 39,726 customers without power (63.8% of the county). NOAA storm reports for that period point to no major storm reported.
How often does the power go out in Jefferson County?
EAGLE-I has recorded 251 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 4 hr 49 min of power per year, and on 33 days at least 5% of customers were out at once.
Cite this page
You may reuse our derived data under CC BY 4.0 with attribution. Underlying government data is public domain.
PowerOutageTracker.com. "Jefferson County, NY Power Outages." Accessed November 3, 2026. https://poweroutagetracker.com/outages/new-york/jefferson-county