Power outage history
Greenwood County South Carolina
18hours
without power for the average customer in a typical year, 2018–2025
11th most of 46 in South Carolina 2.7× 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 Greenwood'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 5.0 days for the average customer. Hatched years have a thin record and are left out of the averages.
Greenwood, 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 | 29,946 | 74% | 11.6 d | 10.0 d | 4.7M |
| Feb 16, 2015 | Ice storm | 14,786 | 36% | 46 h | 34 h | 371k |
| Jun 7, 2025 | Thunderstorms | 8,322 | 20% | 42 h | 36 h | 177k |
| Sep 11, 2017 | Hurricane Irma | 6,014 | 15% | 2.5 d | 38 h | 176k |
| Jan 16, 2022 | Ice storm | 4,207 | 10% | 34 h | 30 h | 62k |
| Jun 20, 2019 | Thunderstorms | 5,423 | 13% | 33 h | 27 h | 57k |
| Jun 22, 2019 | Thunderstorms | 1,849 | 5% | 31 h | – | 33k |
| Oct 4, 2015 | Flooding | 2,266 | 6% | 34 h | 23 h | 31k |
| Jan 3, 2022 | No storm report | 4,582 | 11% | 15 h | 8.8 h | 28k |
| Oct 20, 2024 | No storm report | 2,191 | 5% | 13 h | 2.0 h | 27k |
| May 9, 2024 | Thunderstorms | 2,661 | 7% | 14 h | 11 h | 23k |
| Jan 12, 2023 | Tornadoes | 4,057 | 10% | 9.5 h | 5.8 h | 17k |
| Jul 9, 2020 | Tropical Storm Fay | 1,877 | 5% | 9.2 h | – | 14k |
| Dec 23, 2022 | No storm report | 2,076 | 5% | 12 h | 8.5 h | 14k |
| Jun 17, 2016 | Thunderstorms | 1,950 | 5% | 7.8 h | – | 13k |
| Dec 29, 2024 | Thunderstorms | 2,423 | 6% | 5.2 h | 4.2 h | 12k |
| May 15, 2023 | No storm report | 4,523 | 11% | 6.8 h | 6.8 h | 9.7k |
| Aug 15, 2023 | Thunderstorms | 1,892 | 5% | 8.5 h | – | 9.4k |
| Dec 9, 2019 | No storm report | 4,087 | 10% | 3.2 h | 1.0 h | 9.1k |
| Jan 10, 2024 | No storm report | 1,254 | 3% | 7.8 h | – | 8.9k |
| Sep 17, 2025 | No storm report | 1,740 | 4% | 8.0 h | – | 8.7k |
| Dec 24, 2022 | No storm report | 1,942 | 5% | 7.5 h | – | 8.6k |
| Jun 8, 2019 | No storm report | 1,474 | 4% | 12 h | – | 8.4k |
| Jan 11, 2020 | Tornadoes | 2,857 | 7% | 4.8 h | 3.8 h | 8.3k |
| Feb 24, 2016 | Windstorm | 1,428 | 4% | 7.5 h | – | 7.9k |
| Jun 16, 2018 | No storm report | 1,564 | 4% | 4.8 h | – | 7.4k |
| Jul 7, 2017 | Thunderstorms | 726 | 2% | 12 h | – | 6.9k |
| May 3, 2021 | Tornadoes | 1,310 | 3% | 7.2 h | – | 6.6k |
| Feb 27, 2025 | No storm report | 1,298 | 3% | 5.0 h | – | 6.5k |
| Mar 28, 2021 | Thunderstorms | 992 | 2% | 7.2 h | – | 6.4k |
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 Greenwood from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Tropical storm 86%
- Thunderstorms 6.2%
- No storm on record 5.9%
- Ice storm 1.2%
- Tornadoes 0.6%
Who keeps the lights on
Utilities serving Greenwood
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 |
| Duke Energy Carolinas, LLC | Investor Owned | 220 | 141 | 1.26 | 13.5 | 582k |
| Little River Electric Coop Inc | SC | – | – | – | 15.0 | 151k |
| Aiken Electric Coop Inc | Cooperative | 189 | 119 | – | 17.5 | 51k |
| Greenwood CPW | Municipal | 101 | 42 | 0.90 | 10.0 | 12k |
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 40,695 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 →