Power outage history
Marion County Indiana
4.1hours
without power for the average customer in a typical year, 2018–2025
45th most of 90 in Indiana 37% 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 Marion's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2023 was the worst well-recorded year, at 7.1 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Marion, 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 |
|---|---|---|---|---|---|---|
| Jun 29, 2023 | Thunderstorms | 65,956 | 13% | 4.1 d | 3.8 d | 2.3M |
| Sep 27, 2024 | Hurricane Helene | 58,108 | 12% | 2.8 d | 2.5 d | 1.5M |
| Jun 18, 2025 | Thunderstorms | 66,663 | 14% | 2.3 d | 2.1 d | 1.3M |
| Jul 13, 2015 | Thunderstorms | 40,322 | 8% | 2.7 d | 2.4 d | 1.3M |
| Apr 2, 2025 | Thunderstorms | 46,619 | 9% | 41 h | 40 h | 696k |
| May 16, 2019 | Thunderstorms | 27,915 | 6% | 32 h | 44 h | 553k |
| Oct 20, 2018 | No storm report | 37,089 | 8% | 37 h | 42 h | 534k |
| Aug 26, 2016 | Thunderstorms | 20,119 | 4% | 39 h | 2.1 d | 435k |
| Jun 15, 2016 | Thunderstorms | 27,594 | 6% | 26 h | 31 h | 337k |
| Apr 2, 2016 | Windstorm | 16,646 | 3% | 28 h | 37 h | 242k |
| Jul 29, 2023 | No storm report | 17,407 | 4% | 18 h | 27 h | 207k |
| Mar 30, 2022 | No storm report | 19,159 | 4% | 16 h | 17 h | 152k |
| Feb 24, 2019 | No storm report | 15,170 | 3% | 18 h | 29 h | 140k |
| Aug 25, 2021 | Thunderstorms | 28,735 | 6% | 9.2 h | 12 h | 139k |
| Dec 11, 2021 | Thunderstorms | 12,401 | 3% | 18 h | 20 h | 129k |
| Jun 23, 2016 | Thunderstorms | 22,444 | 5% | 8.5 h | 10 h | 98k |
| Jul 27, 2020 | Thunderstorms | 16,561 | 3% | 8.8 h | 20 h | 88k |
| Aug 20, 2019 | Thunderstorms | 14,391 | 3% | 12 h | 22 h | 78k |
| May 16, 2025 | Thunderstorms | 17,533 | 4% | 7.0 h | 19 h | 77k |
| Jul 13, 2016 | Thunderstorms | 14,885 | 3% | 5.8 h | 17 h | 63k |
| Jun 12, 2021 | Thunderstorms | 11,429 | 2% | 6.8 h | 8.8 h | 62k |
| Jul 29, 2019 | Thunderstorms | 9,917 | 2% | 9.0 h | 13 h | 59k |
| Jul 16, 2024 | Thunderstorms | 9,236 | 2% | 8.8 h | 18 h | 55k |
| Oct 27, 2019 | Tropical Storm Olga | 5,089 | 1% | 10 h | 18 h | 51k |
| Aug 10, 2020 | Thunderstorms | 18,720 | 4% | 4.5 h | 9.8 h | 51k |
| Aug 8, 2019 | No storm report | 7,096 | 1% | 9.2 h | 12 h | 50k |
| Jun 23, 2019 | Thunderstorms | 9,347 | 2% | 6.8 h | 15 h | 41k |
| Sep 12, 2021 | No storm report | 14,605 | 3% | 2.8 h | 1.8 h | 36k |
| Mar 15, 2021 | No storm report | 9,292 | 2% | 4.8 h | 9.2 h | 36k |
| Jul 11, 2017 | Thunderstorms | 9,743 | 2% | 5.0 h | 10 h | 35k |
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 Marion from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Thunderstorms 65%
- Tropical storm 17%
- No storm on record 17%
- Windstorm 0.7%
Who keeps the lights on
Utilities serving Marion
As each utility reports to the Energy Information Administration for its whole Indiana territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Duke Energy Indiana, LLC | Investor Owned | 267 | 108 | 1.26 | 15.0 | 809k |
| AES Indiana | Investor Owned | 295 | 76 | 1.22 | 14.7 | 470k |
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.
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 493,304 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 →