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

Power outage history

Hamilton County New York

99hours

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

1st most of 62 in New York 15× the national median

Worst outage on record Jul 16, 2024 100% of customers out · 90% back in 3.1 days
Hours without power, average customer per year 99h / yr State average 4.3 h · national median 6.6 h
Major outages a year 22.3 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 4hours Median across major outages, from the peak
Longest single outage 3.6days Feb 7, 2020, over 1% of customers out
Outage hours on storm days 66% Share falling on days with a NOAA storm report here
Worst year 2018 7.8 days without power, average customer
Electricity customers 2,561 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 Hamilton'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 7.8 days for the average customer. Hatched years have a thin record and are left out of the averages.

Hamilton, hours without power per customer

HamiltonUS median countyNew York average
0 50 100 150 200 250 49 ’15 102 ’16 87 ’17 186 ’18 98 ’19 86 ’20 50 ’21 95 ’22 43 ’23 160 ’24 75 ’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
Jul 16, 2024 Tornadoes 2,561 100% 3.3 d 3.1 d 154k
Apr 4, 2018 Windstorm 2,561 100% 2.8 d 2.4 d 137k
May 4, 2018 Thunderstorms 2,561 100% 2.9 d 2.1 d 129k
Apr 18, 2022 Winter storm 2,561 100% 2.9 d 2.4 d 111k
Oct 31, 2019 Flooding 2,561 100% 2.9 d 2.5 d 105k
Feb 7, 2020 Winter storm 2,561 100% 3.6 d 2.1 d 71k
Dec 29, 2025 Ice storm 2,468 96% 42 h 9.0 h 67k
Aug 13, 2016 No storm report 2,561 100% 29 h 20 h 56k
Feb 7, 2017 Ice storm 2,561 100% 23 h 21 h 54k
Feb 28, 2024 Windstorm 1,938 76% 2.0 d 44 h 53k
Mar 10, 2024 Winter storm 2,561 100% 22 h 21 h 53k
Oct 15, 2018 No storm report 2,561 100% 27 h 16 h 43k

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 +22h 90% by +44h

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 Hamilton from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 34%
  • Winter storm 24%
  • Windstorm 14%
  • Thunderstorms 8.9%
  • Tornadoes 7.7%
  • Flooding 5.2%
  • Ice storm 3.4%
  • Tropical storm 2.3%
  • Heat 0.6%

Who keeps the lights on

Utilities serving Hamilton

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
New York State Elec & Gas Corp Investor Owned 302 146 1.85 22.6 794k

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 2,561 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 →