See current outages near you, plus an independent restoration forecast when enough trend data exists · New York
Our restoration forecast is independent and unofficial, never the utility's commitment. How it works · How accurate it has been
Who serves Jefferson County?
County-wide coverage, with utility detail where available. Serving utilities tracked here include National Grid, alongside the nationwide county-by-county tally. Village of Philadelphia and Village of Theresa also serve parts of this county — we don't yet read their own live outage maps. Multiple utilities serve parts of this area — enter a street address above for your exact provider.
Outage history — Jefferson County, NY
Last significant outage: Sep 6, 2026 — peaked at 369 customers, restored in ~1.3 hr (no severe weather).
Across the 13 significant outages tracked here, restoration typically ran about 2.7 hr.
This county-level list covers larger outages (about 200+ customers at peak, lasting 30 minutes or more) — oldest listed: Jul 4, 2026. Smaller or briefer interruptions aren't listed.
Longer-term outage history — Jefferson County, NY
Federal outage records (
EAGLE-I, kept by the U.S. Department of Energy) show
581 notable outages (200+ customers at peak) here between 2014 and 2025 — including
4 major events of 10,000+ customers.
Typical restoration ran ~
2 hr (median), and outages here have been most common in summer.
That is shorter than the New York norm in the same records, where the typical outage ran ~3.5 hr.
Largest on record: ~39,726 customers out in March 2022, restored after about 48 min. The busiest year on record here was 2025.
Source: EAGLE-I (Oak Ridge National Laboratory / U.S. Department of Energy), county-level
records 2014–2025 measured by the same rules as our tracking archive above, over a far longer period than we have been tracking — the same method, a different set of outages. These are federal historical records,
not events tracked live by this site.
Cities we track in Jefferson County
Communities in Jefferson County include Watertown, Carthage, West Carthage, Clayton, Adams, Sackets Harbor, Black River and Dexter. Searches and the live map cover every address in the county, named here or not.
Common questions
How do I report a power outage in Jefferson County, NY?
Report it to your electric utility — crews are dispatched from customer reports. Utilities serving parts of Jefferson include National Grid, Village of Philadelphia and Village of Theresa — service areas overlap and county lines don't decide your provider, so confirm yours, then use its outage line or website. Reporting a downed line also helps crews find the fault faster. In a life-threatening emergency, call 911.
