Power outage history
Westmoreland County Pennsylvania
6.1hours
without power for the average customer in a typical year, 2018–2025
40th most of 67 in Pennsylvania close to the national median
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 Westmoreland's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2025 was the worst well-recorded year, at 15 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Westmoreland, hours without power per customer
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 29, 2025 | Thunderstorms | 67,124 | 36% | 4.8 d | 3.0 d | 1.9M |
| Feb 24, 2019 | Windstorm | 24,482 | 13% | 3.1 d | 2.4 d | 772k |
| Mar 3, 2023 | Windstorm | 15,331 | 8% | 2.8 d | 2.7 d | 366k |
| May 3, 2022 | Thunderstorms | 25,698 | 14% | 23 h | 22 h | 262k |
| Apr 8, 2020 | Thunderstorms | 20,993 | 11% | 19 h | 18 h | 178k |
| Jun 22, 2022 | Thunderstorms | 20,257 | 11% | 22 h | 21 h | 152k |
| Mar 16, 2025 | Thunderstorms | 8,907 | 5% | 29 h | 36 h | 149k |
| Jan 9, 2024 | Windstorm | 10,685 | 6% | 29 h | 25 h | 146k |
| Jun 26, 2024 | Thunderstorms | 13,295 | 7% | 20 h | 20 h | 122k |
| Apr 1, 2023 | Thunderstorms | 16,234 | 9% | 21 h | 16 h | 121k |
| Dec 28, 2015 | Windstorm | 6,178 | 3% | 18 h | 15 h | 74k |
| Feb 17, 2022 | Windstorm | 7,629 | 4% | 15 h | 17 h | 66k |
| Sep 9, 2018 | Flooding | 7,058 | 4% | 17 h | 17 h | 65k |
| Aug 22, 2017 | Thunderstorms | 8,425 | 4% | 12 h | 19 h | 56k |
| Mar 25, 2023 | No storm report | 7,214 | 4% | 18 h | 18 h | 52k |
| Aug 27, 2020 | Thunderstorms | 6,530 | 3% | 16 h | 18 h | 51k |
| Nov 15, 2020 | Thunderstorms | 10,119 | 5% | 12 h | 12 h | 49k |
| Dec 11, 2021 | Windstorm | 9,152 | 5% | 8.0 h | 6.5 h | 46k |
| Dec 29, 2024 | No storm report | 5,380 | 3% | 12 h | 17 h | 38k |
| Oct 6, 2018 | No storm report | 3,626 | 2% | 10 h | – | 35k |
| Jun 17, 2024 | Thunderstorms | 9,701 | 5% | 7.0 h | 11 h | 32k |
| Aug 12, 2021 | Thunderstorms | 9,474 | 5% | 9.8 h | 8.5 h | 30k |
| Dec 23, 2022 | Winter storm | 7,467 | 4% | 7.8 h | 8.5 h | 29k |
| Aug 16, 2016 | Thunderstorms | 6,960 | 4% | 6.5 h | 13 h | 28k |
| Apr 9, 2015 | Thunderstorms | 9,469 | 5% | 5.2 h | 4.8 h | 27k |
| Jul 23, 2022 | Thunderstorms | 7,008 | 4% | 5.5 h | 8.0 h | 27k |
| Oct 31, 2019 | Windstorm | 5,311 | 3% | 7.2 h | 11 h | 25k |
| Feb 12, 2017 | Windstorm | 5,238 | 3% | 7.5 h | 19 h | 25k |
| Aug 25, 2023 | Thunderstorms | 6,152 | 3% | 7.2 h | 8.5 h | 24k |
| Apr 17, 2024 | Thunderstorms | 10,158 | 5% | 6.5 h | 13 h | 23k |
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.
When it happens
The outage clock
Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.
What was happening
Weather behind the outages
Each outage is matched to NOAA storm reports for Westmoreland from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Thunderstorms 60%
- Windstorm 26%
- No storm on record 10%
- Flooding 1.8%
- Winter storm 1.2%
Who keeps the lights on
Utilities serving Westmoreland
As each utility reports to the Energy Information Administration for its whole Pennsylvania territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| FirstEnergy Pennsylvania Electric Co | Investor Owned | 647 | 217 | 2.02 | 18.8 | 1.8M |
| Duquesne Light Co | Investor Owned | 856 | 103 | 1.27 | 23.5 | 553k |
| REA Energy Coop Inc | Cooperative | – | – | – | 16.1 | 21k |
| Somerset Rural Elec Coop, Inc | Cooperative | – | – | – | 14.4 | 12k |
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
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 188,408 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 →