Power outage history
Jasper County South Carolina
8.1hours
without power for the average customer in a typical year, 2018–2025
24th most of 46 in South Carolina 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 Jasper'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 40 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Jasper, 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 26, 2024 | Hurricane Helene | 15,402 | 87% | 5.9 d | 3.3 d | 637k |
| Oct 8, 2016 | Hurricane Matthew | 6,681 | 38% | 6.2 d | 5.7 d | 459k |
| Sep 11, 2017 | Hurricane Irma | 4,360 | 25% | 2.3 d | 28 h | 83k |
| Oct 7, 2016 | Hurricane Matthew | 6,614 | 37% | 17 h | 13 h | 76k |
| Oct 11, 2018 | Hurricane Michael | 4,605 | 26% | 18 h | 12 h | 28k |
| Aug 6, 2020 | Thunderstorms | 722 | 4% | 2.2 d | – | 28k |
| Aug 30, 2023 | Hurricane Idalia | 2,464 | 14% | 19 h | 18 h | 25k |
| Apr 19, 2019 | Thunderstorms | 3,319 | 19% | 19 h | 17 h | 17k |
| Jul 8, 2021 | Hurricane Elsa | 2,298 | 13% | 19 h | 19 h | 16k |
| Jan 3, 2022 | Windstorm | 4,477 | 25% | 14 h | 2.2 h | 14k |
| Jul 28, 2021 | No storm report | 9,865 | 56% | 3.2 h | 1.0 h | 13k |
| Jan 9, 2024 | Windstorm | 2,534 | 14% | 13 h | 3.5 h | 12k |
| Aug 5, 2024 | Hurricane Debby | 1,147 | 6% | 20 h | 19 h | 10k |
| Jul 26, 2021 | No storm report | 7,370 | 42% | 9.2 h | 1.0 h | 10.0k |
| Dec 23, 2022 | No storm report | 2,711 | 15% | 8.0 h | 7.5 h | 9.7k |
| Mar 29, 2023 | No storm report | 3,941 | 22% | 2.0 h | 5.0 h | 7.5k |
| May 3, 2016 | Thunderstorms | 1,336 | 8% | 9.5 h | 9.0 h | 7.1k |
| Jun 18, 2025 | No storm report | 1,386 | 8% | 5.0 h | 7.0 h | 6.8k |
| Jan 23, 2017 | No storm report | 3,363 | 19% | 2.0 h | 1.5 h | 6.1k |
| Jun 14, 2023 | Thunderstorms | 1,691 | 10% | 5.0 h | 4.0 h | 6.0k |
| Apr 12, 2024 | No storm report | 1,649 | 9% | 5.5 h | 6.5 h | 5.8k |
| Aug 14, 2020 | Thunderstorms | 1,963 | 11% | 6.5 h | 5.8 h | 5.1k |
| Jul 10, 2022 | No storm report | 7,289 | 41% | 1.0 h | 30 min | 4.9k |
| Aug 15, 2023 | Thunderstorms | 1,207 | 7% | 4.8 h | 3.8 h | 4.3k |
| Jun 20, 2019 | Thunderstorms | 1,349 | 8% | 4.2 h | 3.0 h | 4.1k |
| Jul 4, 2023 | No storm report | 1,247 | 7% | 4.2 h | 2.8 h | 3.9k |
| Aug 8, 2023 | Thunderstorms | 2,124 | 12% | 2.8 h | 2.2 h | 3.8k |
| Jul 22, 2025 | Thunderstorms | 3,660 | 21% | 3.8 h | 2.2 h | 3.7k |
| Mar 12, 2022 | Windstorm | 1,012 | 6% | 8.0 h | 3.8 h | 3.5k |
| Apr 30, 2023 | No storm report | 1,290 | 7% | 5.5 h | 4.0 h | 3.4k |
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 Jasper from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Tropical storm 71%
- No storm on record 17%
- Thunderstorms 8.8%
- Windstorm 3.4%
Who keeps the lights on
Utilities serving Jasper
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 |
| Palmetto Electric Coop Inc | Cooperative | 51 | 38 | 0.76 | 14.4 | 70k |
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
- Effingham, GA 13 h
- Hampton 13 h
- Chatham, GA 12 h
- Jasper (this county) 8.1 h
- Beaufort 3.6 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 17,702 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 →