Power outage history
Coffee County Tennessee
3.1hours
without power for the average customer in a typical year, 2018–2025
53rd most of 73 in Tennessee 53% 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 Coffee's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2021 was the worst well-recorded year, at 6.0 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Coffee, 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 |
|---|---|---|---|---|---|---|
| Feb 16, 2015 | Winter storm | 6,594 | 20% | 46 h | 28 h | 130k |
| Feb 15, 2021 | Winter storm | 4,982 | 15% | 2.4 d | 36 h | 116k |
| Aug 7, 2023 | Thunderstorms | 6,325 | 19% | 28 h | 18 h | 68k |
| May 3, 2020 | Thunderstorms | 6,256 | 19% | 23 h | 19 h | 50k |
| Oct 12, 2022 | Thunderstorms | 7,002 | 21% | 21 h | 16 h | 41k |
| May 8, 2024 | Thunderstorms | 11,612 | 35% | 20 h | 48 min | 39k |
| Feb 17, 2021 | Winter storm | 2,675 | 8% | 22 h | 18 h | 33k |
| Feb 21, 2015 | Winter storm | 2,353 | 7% | 13 h | 11 h | 18k |
| Feb 25, 2015 | Winter storm | 4,159 | 13% | 4.0 h | 2.2 h | 15k |
| Mar 29, 2020 | Thunderstorms | 8,346 | 25% | 4.8 h | 1.5 h | 15k |
| Jun 22, 2018 | Thunderstorms | 4,602 | 14% | 6.2 h | 5.0 h | 14k |
| Apr 13, 2022 | Thunderstorms | 3,072 | 9% | 11 h | 10 h | 13k |
| Jan 2, 2022 | Winter storm | 1,644 | 5% | 12 h | – | 10k |
| Jun 19, 2019 | Thunderstorms | 3,315 | 10% | 11 h | 4.5 h | 9.7k |
| Mar 3, 2023 | Windstorm | 1,086 | 3% | 11 h | – | 7.0k |
| Aug 10, 2023 | No storm report | 1,704 | 5% | 7.8 h | 6.2 h | 7.0k |
| Sep 21, 2025 | No storm report | 1,407 | 4% | 5.0 h | – | 6.9k |
| Sep 29, 2024 | Hurricane Helene | 2,132 | 6% | 5.2 h | 4.0 h | 6.7k |
| Aug 21, 2024 | No storm report | 1,768 | 5% | 2.8 h | 2.0 h | 4.8k |
| Dec 18, 2025 | No storm report | 2,602 | 8% | 3.0 h | 2.5 h | 4.3k |
| Jul 20, 2023 | Thunderstorms | 4,041 | 12% | 2.2 h | 30 min | 3.8k |
| Jun 21, 2019 | Thunderstorms | 1,818 | 6% | 4.2 h | 3.8 h | 3.6k |
| Nov 8, 2021 | No storm report | 1,539 | 5% | 2.5 h | – | 3.6k |
| Mar 31, 2025 | No storm report | 1,788 | 5% | 2.0 h | 2.0 h | 3.6k |
| May 14, 2024 | Thunderstorms | 1,297 | 4% | 5.2 h | – | 3.6k |
| Nov 19, 2025 | No storm report | 7,290 | 22% | 30 min | 30 min | 3.4k |
| May 4, 2020 | No storm report | 432 | 1% | 8.0 h | – | 3.3k |
| Mar 7, 2022 | No storm report | 5,965 | 18% | 48 min | 10 h | 3.3k |
| Aug 30, 2024 | Thunderstorms | 1,794 | 5% | 2.0 h | 1.5 h | 3.0k |
| Aug 1, 2021 | Thunderstorms | 1,904 | 6% | 1.5 h | 1.8 h | 2.8k |
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 Coffee from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Thunderstorms 46%
- Winter storm 27%
- No storm on record 24%
- Tropical storm 1.2%
- Windstorm 1.2%
- Tornadoes 0.5%
Who keeps the lights on
Utilities serving Coffee
As each utility reports to the Energy Information Administration for its whole Tennessee territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Duck River Elec Member Corp | Cooperative | 190 | 134 | 2.14 | 13.6 | 72k |
| Sequachee Valley Electric Coop | Cooperative | 305 | 253 | 2.15 | 13.8 | 33k |
| Caney Fork Electric Coop, Inc | Cooperative | 322 | 322 | 2.66 | 13.6 | 30k |
| Tullahoma Board-Public Utils | Municipal | 74 | 55 | 3.04 | 11.7 | 9.3k |
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
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 33,033 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 →