Power Out Map
– 0% of Oswego out 0 customers out in New York

Power outage history

Oswego County New York

5.5hours

without power for the average customer in a typical year, 2018–2025

36th most of 62 in New York 17% below the national median

Worst outage on record Apr 16, 2018 25% of customers out · 90% back in 13 hours
Hours without power, average customer per year 5.5h / yr State average 4.3 h · national median 6.6 h
Major outages a year 2.4 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 7hours Median across major outages, from the peak
Longest single outage 41hours Oct 31, 2019, over 1% of customers out
Outage hours on storm days 53% Share falling on days with a NOAA storm report here
Worst year 2018 10.0 hours without power, average customer
Electricity customers 57,759 ORNL customer model · 8 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Oswego's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025
0%100% of customers out

Year by year

Hours in the dark, per customer

2018 was the worst well-recorded year, at 10.0 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Oswego, hours without power per customer

OswegoUS median countyNew York average
0 2 4 6 8 10 12 3.9 ’15 3.9 ’16 4.3 ’17 10.0 ’18 4.6 ’19 2.5 ’20 6.2 ’21 5.3 ’22 3.2 ’23 6.3 ’24 5.7 ’25 US 6.6 NY 4.3

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began Storm Peak out Share Lasted 90% restored Customer-hours
Apr 16, 2018 No storm report 14,521 25% 38 h 13 h 180k
Oct 15, 2017 Thunderstorms 12,299 21% 20 h 15 h 89k
Oct 31, 2019 Windstorm 6,714 12% 41 h 24 h 88k
Feb 28, 2024 Windstorm 6,962 12% 25 h 18 h 82k
Apr 4, 2018 Windstorm 8,551 15% 29 h 22 h 78k
Jan 9, 2024 Windstorm 8,076 14% 23 h 20 h 61k
Feb 25, 2019 Winter storm 8,154 14% 22 h 15 h 58k
Nov 17, 2022 Winter storm 10,870 19% 18 h 9.8 h 57k
Jan 10, 2016 Windstorm 6,626 11% 12 h 7.0 h 51k
Dec 11, 2021 Windstorm 6,606 11% 20 h 18 h 50k
Nov 28, 2018 Winter storm 5,827 10% 20 h 11 h 49k
Jun 22, 2025 Thunderstorms 9,295 16% 33 h 9.2 h 47k

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

0% 25% 50% 75% 100% peak+24h+48h+72h+96h half back by +6h 90% by +16h

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

00061218 Jan inside

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Oswego from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 47%
  • Windstorm 23%
  • Thunderstorms 14%
  • Winter storm 14%
  • Flooding 1.4%

Who keeps the lights on

Utilities serving Oswego

As each utility reports to the Energy Information Administration for its whole New York territory, not this county alone. Outage minutes include major storm days.

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Niagara Mohawk Power Corp. Investor Owned 242 140 1.39 19.9 1.5M

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

Across New York

Where it is darkest

Hours / yr64+

All New York counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 57,759 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →