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

Power outage history

Montgomery County New York

5.5hours

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

34th most of 62 in New York 16% below the national median

Worst outage on record Jul 16, 2024 27% of customers out · 90% back in 48 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 1.9 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 2hours Median across major outages, from the peak
Longest single outage 2.6days Jul 16, 2024, over 1% of customers out
Outage hours on storm days 73% Share falling on days with a NOAA storm report here
Worst year 2024 13 hours without power, average customer
Electricity customers 24,995 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 Montgomery'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

2024 was the worst well-recorded year, at 13 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Montgomery, hours without power per customer

MontgomeryUS median countyNew York average
0 5 10 15 3.5 ’15 2.0 ’16 4.4 ’17 7.9 ’18 4.5 ’19 5.2 ’20 3.1 ’21 4.8 ’22 2.3 ’23 13 ’24 3.4 ’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 Thunderstorms 6,714 27% 2.6 d 48 h 198k
Oct 7, 2020 Thunderstorms 4,489 18% 43 h 24 h 81k
Mar 2, 2018 Winter storm 3,408 14% 35 h 20 h 60k
Nov 1, 2019 Flooding 2,956 12% 38 h 31 h 58k
Feb 28, 2024 Windstorm 2,357 9% 44 h 37 h 53k
May 5, 2018 Thunderstorms 3,252 13% 15 h 15 h 46k
Aug 3, 2015 Thunderstorms 2,509 10% 22 h 21 h 31k
Apr 19, 2022 Winter storm 1,327 5% 37 h 26 h 30k
Mar 2, 2017 Windstorm 2,381 10% 36 h 32 h 28k
Apr 4, 2018 Windstorm 1,138 5% 39 h – 15k
May 6, 2018 No storm report 3,150 13% 4.5 h 12 min 14k
Dec 29, 2025 Ice storm 1,971 8% 21 h 32 h 13k

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 +8h 90% by +26h

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

  • Thunderstorms 39%
  • No storm on record 27%
  • Winter storm 13%
  • Windstorm 11%
  • Flooding 6.6%
  • Heat 1.5%
  • Ice storm 1.5%
  • Tropical storm 1.3%

Who keeps the lights on

Utilities serving Montgomery

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 24,995 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 →