Power outage history
Dauphin County Pennsylvania
1.8hours
without power for the average customer in a typical year, 2018–2025
66th most of 67 in Pennsylvania 72% below 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 Dauphin's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2024 was the worst well-recorded year, at 3.7 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Dauphin, 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 |
|---|---|---|---|---|---|---|
| Feb 13, 2024 | Winter storm | 21,434 | 12% | 35 h | 16 h | 239k |
| Jun 26, 2024 | Thunderstorms | 8,404 | 5% | 27 h | 48 min | 105k |
| Oct 29, 2017 | Windstorm | 11,870 | 7% | 17 h | 16 h | 83k |
| Mar 2, 2018 | Windstorm | 4,320 | 2% | 28 h | – | 82k |
| Nov 5, 2025 | Thunderstorms | 8,469 | 5% | 20 h | 23 h | 73k |
| May 31, 2025 | Windstorm | 6,780 | 4% | 19 h | 30 h | 72k |
| Sep 1, 2021 | Hurricane Ida | 5,515 | 3% | 14 h | 5.8 h | 40k |
| Aug 11, 2021 | Thunderstorms | 13,499 | 8% | 5.8 h | 7.5 h | 31k |
| Apr 30, 2021 | Windstorm | 6,486 | 4% | 8.2 h | 19 h | 23k |
| Dec 19, 2025 | Windstorm | 3,358 | 2% | 8.5 h | – | 21k |
| Oct 31, 2019 | Thunderstorms | 4,007 | 2% | 8.8 h | – | 19k |
| Jan 14, 2024 | Windstorm | 4,313 | 2% | 6.2 h | – | 18k |
| Aug 9, 2024 | Hurricane Debby | 3,298 | 2% | 7.2 h | – | 17k |
| Jun 28, 2016 | Thunderstorms | 7,680 | 4% | 2.8 h | 3.0 h | 17k |
| Apr 3, 2016 | Windstorm | 3,148 | 2% | 8.0 h | – | 16k |
| Jun 30, 2021 | Thunderstorms | 6,167 | 3% | 5.2 h | 4.8 h | 15k |
| Jun 3, 2023 | Thunderstorms | 4,916 | 3% | 4.0 h | – | 13k |
| May 15, 2018 | Thunderstorms | 6,351 | 4% | 3.8 h | 4.8 h | 13k |
| Jun 14, 2015 | Thunderstorms | 7,874 | 4% | 2.5 h | 3.2 h | 12k |
| Jul 6, 2019 | Thunderstorms | 5,956 | 3% | 2.8 h | 8.2 h | 9.3k |
| Jul 25, 2025 | Heat | 8,319 | 5% | 1.5 h | 7.0 h | 8.3k |
| Feb 7, 2020 | No storm report | 6,427 | 4% | 2.2 h | 2.2 h | 8.1k |
| May 31, 2015 | Thunderstorms | 2,262 | 1% | 3.8 h | – | 7.5k |
| Mar 3, 2015 | No storm report | 3,227 | 2% | 2.2 h | – | 7.2k |
| Nov 8, 2023 | No storm report | 2,889 | 2% | 2.2 h | – | 6.5k |
| Feb 17, 2022 | No storm report | 4,567 | 3% | 2.0 h | – | 6.5k |
| Dec 28, 2016 | No storm report | 2,972 | 2% | 2.5 h | – | 6.4k |
| Apr 1, 2023 | No storm report | 5,154 | 3% | 2.8 h | 5.0 h | 6.2k |
| Aug 28, 2022 | No storm report | 10,766 | 6% | 30 min | 2.0 h | 5.4k |
| Aug 6, 2024 | No storm report | 2,888 | 2% | 2.2 h | – | 5.3k |
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 Dauphin from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Thunderstorms 32%
- Winter storm 26%
- Windstorm 23%
- No storm on record 12%
- Tropical storm 6.2%
- Heat 0.9%
Who keeps the lights on
Utilities serving Dauphin
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 |
| PPL Electric Utilities Corp | Investor Owned | 198 | 116 | 0.97 | 18.6 | 1.3M |
| Borough of Middletown | PA | – | – | – | – | 33k |
| Borough of Royalton | PA | – | – | – | – | 4.8k |
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
- Perry 10 h
- Juniata 6.6 h
- Schuylkill 5.5 h
- York 4.6 h
- Northumberland 4.5 h
- Lebanon 3.9 h
- Cumberland 2.9 h
- Lancaster 2.8 h
- Dauphin (this county) 1.8 h
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 176,757 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 →