Power outage history
Aiken County South Carolina
22hours
without power for the average customer in a typical year, 2018–2025
9th most of 46 in South Carolina 3.3× 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 Aiken'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 6.4 days for the average customer. Hatched years have a thin record and are left out of the averages.
Aiken, 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 | 79,309 | 100% | 13.0 d | 9.8 d | 12M |
| Sep 11, 2017 | Hurricane Irma | 24,396 | 31% | 34 h | 21 h | 238k |
| Oct 11, 2018 | Hurricane Michael | 19,096 | 24% | 18 h | 10 h | 139k |
| Jun 20, 2019 | Thunderstorms | 11,688 | 15% | 27 h | 26 h | 98k |
| Jan 3, 2022 | Windstorm | 15,324 | 19% | 13 h | 7.0 h | 85k |
| Jun 7, 2025 | Thunderstorms | 16,695 | 21% | 12 h | 6.2 h | 79k |
| Jul 20, 2023 | Thunderstorms | 9,171 | 12% | 14 h | 7.5 h | 46k |
| Apr 3, 2017 | Thunderstorms | 6,416 | 8% | 9.0 h | 11 h | 33k |
| Apr 25, 2019 | No storm report | 16,271 | 21% | 3.2 h | 48 min | 28k |
| Jun 27, 2020 | Thunderstorms | 8,611 | 11% | 6.8 h | 5.0 h | 27k |
| Apr 15, 2018 | Thunderstorms | 6,234 | 8% | 5.8 h | 4.5 h | 23k |
| Jul 13, 2017 | No storm report | 2,034 | 3% | 13 h | – | 23k |
| Jun 22, 2019 | Thunderstorms | 3,882 | 5% | 9.0 h | – | 21k |
| Oct 8, 2016 | Hurricane Matthew | 3,096 | 4% | 9.2 h | – | 19k |
| Apr 19, 2015 | Thunderstorms | 4,496 | 6% | 11 h | 13 h | 19k |
| Jun 25, 2018 | Thunderstorms | 5,279 | 7% | 5.5 h | 4.0 h | 17k |
| Jan 27, 2021 | No storm report | 13,689 | 17% | 1.5 h | 1.0 h | 17k |
| Oct 8, 2016 | Hurricane Matthew | 2,888 | 4% | 9.8 h | – | 15k |
| Apr 13, 2020 | Tornadoes | 4,980 | 6% | 8.2 h | 15 h | 15k |
| May 30, 2021 | No storm report | 2,017 | 3% | 7.5 h | – | 14k |
| Jun 15, 2017 | Thunderstorms | 1,903 | 2% | 11 h | – | 14k |
| Jun 25, 2025 | Thunderstorms | 4,596 | 6% | 4.8 h | 4.2 h | 13k |
| Jul 26, 2017 | Thunderstorms | 10,012 | 13% | 5.0 h | 2.0 h | 13k |
| Sep 26, 2018 | No storm report | 4,545 | 6% | 3.0 h | 1.5 h | 13k |
| Jul 21, 2023 | No storm report | 5,653 | 7% | 6.2 h | 7.0 h | 12k |
| Jul 27, 2024 | No storm report | 6,141 | 8% | 1.5 h | 30 min | 9.0k |
| Dec 13, 2025 | No storm report | 1,497 | 2% | 5.2 h | – | 7.8k |
| Mar 9, 2021 | No storm report | 6,604 | 8% | 1.2 h | 1.0 h | 7.6k |
| Oct 13, 2018 | No storm report | 1,779 | 2% | 5.0 h | – | 7.4k |
| Sep 22, 2020 | No storm report | 1,489 | 2% | 4.5 h | – | 6.7k |
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 Aiken from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Tropical storm 93%
- No storm on record 3.1%
- Thunderstorms 2.9%
- Windstorm 0.7%
Who keeps the lights on
Utilities serving Aiken
As each utility reports to the Energy Information Administration for its whole South Carolina territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Dominion Energy South Carolina, Inc | Investor Owned | 131 | 81 | 1.34 | 16.4 | 713k |
| Mid-Carolina Electric Coop Inc | Cooperative | 267 | 90 | 2.21 | 16.8 | 57k |
| Aiken Electric Coop Inc | Cooperative | 189 | 119 | – | 17.5 | 51k |
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
- Edgefield 27 h
- Saluda 24 h
- Aiken (this county) 22 h
- Richmond, GA 17 h
- Burke, GA 11 h
- Barnwell 8.9 h
- Lexington 6.9 h
- Orangeburg 3.0 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 79,309 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 →