Power outage history
Ross County Ohio
7.8hours
without power for the average customer in a typical year, 2018–2025
21st most of 88 in Ohio 1.2× 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 Ross'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 15 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Ross, 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 |
|---|---|---|---|---|---|---|
| Sep 27, 2024 | Hurricane Helene | 17,215 | 33% | 3.1 d | 2.1 d | 604k |
| Mar 3, 2023 | Tornadoes | 12,759 | 24% | 2.1 d | 43 h | 381k |
| Feb 3, 2022 | Ice storm | 5,935 | 11% | 3.4 d | 3.0 d | 260k |
| Jun 13, 2022 | Thunderstorms | 7,100 | 13% | 3.0 d | 2.8 d | 184k |
| Jun 23, 2016 | Thunderstorms | 14,302 | 27% | 4.2 d | 12 h | 145k |
| Sep 6, 2018 | Thunderstorms | 6,103 | 12% | 25 h | 19 h | 47k |
| Jan 22, 2018 | No storm report | 6,981 | 13% | 12 h | 7.0 h | 47k |
| Jun 10, 2020 | Thunderstorms | 5,000 | 9% | 17 h | 16 h | 36k |
| Aug 30, 2019 | Thunderstorms | 1,739 | 3% | 26 h | – | 27k |
| Jul 14, 2024 | No storm report | 2,215 | 4% | 23 h | – | 25k |
| Nov 21, 2025 | No storm report | 2,716 | 5% | 9.2 h | 8.0 h | 24k |
| Mar 25, 2023 | No storm report | 3,321 | 6% | 12 h | 21 h | 23k |
| Apr 30, 2017 | No storm report | 2,661 | 5% | 13 h | 4.2 h | 22k |
| May 29, 2022 | No storm report | 6,986 | 13% | 3.0 h | 12 h | 19k |
| Oct 20, 2018 | No storm report | 1,796 | 3% | 17 h | – | 18k |
| Jan 19, 2019 | Winter storm | 3,172 | 6% | 8.0 h | 8.0 h | 16k |
| Jun 24, 2019 | Thunderstorms | 1,171 | 2% | 21 h | – | 16k |
| Dec 23, 2022 | Winter storm | 2,229 | 4% | 16 h | – | 16k |
| Aug 2, 2024 | No storm report | 7,590 | 14% | 3.5 h | 3.5 h | 15k |
| Apr 1, 2023 | No storm report | 2,547 | 5% | 9.2 h | – | 15k |
| Aug 11, 2020 | No storm report | 1,818 | 3% | 8.5 h | – | 14k |
| Dec 6, 2016 | No storm report | 2,399 | 5% | 7.5 h | – | 14k |
| Apr 5, 2023 | No storm report | 2,587 | 5% | 13 h | – | 14k |
| Oct 23, 2021 | No storm report | 1,510 | 3% | 9.2 h | – | 14k |
| Jul 14, 2015 | Thunderstorms | 2,190 | 4% | 10 h | – | 13k |
| Nov 1, 2020 | No storm report | 3,970 | 8% | 7.2 h | 4.5 h | 13k |
| May 11, 2015 | No storm report | 3,619 | 7% | 4.2 h | 2.2 h | 13k |
| May 16, 2017 | No storm report | 6,629 | 13% | 3.2 h | 3.0 h | 13k |
| May 9, 2019 | No storm report | 1,689 | 3% | 7.2 h | – | 12k |
| Mar 1, 2017 | Thunderstorms | 1,969 | 4% | 8.5 h | – | 12k |
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 Ross from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 30%
- Tropical storm 25%
- Tornadoes 16%
- Thunderstorms 15%
- Ice storm 11%
- Winter storm 2.8%
- Flooding 0.7%
- Windstorm 0.6%
Who keeps the lights on
Utilities serving Ross
As each utility reports to the Energy Information Administration for its whole Ohio 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 Ohio Inc | Investor Owned | 178 | 108 | 1.01 | 16.8 | 700k |
| Dayton Power & Light Co | Investor Owned | 168 | 97 | 0.99 | 16.1 | 469k |
| South Central Power Company | Cooperative | 298 | 198 | 2.83 | 15.4 | 118k |
| Buckeye Rural Elec Coop, Inc | Cooperative | 995 | 995 | 3.19 | 20.5 | 16k |
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 52,738 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 →