Power outage history
Roane County Tennessee
3.2hours
without power for the average customer in a typical year, 2018–2025
51st most of 73 in Tennessee 51% 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 Roane's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2022 was the worst well-recorded year, at 4.7 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Roane, 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 |
|---|---|---|---|---|---|---|
| Aug 7, 2023 | Thunderstorms | 1,885 | 7% | 25 h | 22 h | 24k |
| Mar 31, 2022 | No storm report | 2,505 | 9% | 20 h | 15 h | 24k |
| Apr 19, 2024 | No storm report | 3,813 | 14% | 5.8 h | 7.5 h | 22k |
| Jan 26, 2022 | No storm report | 2,634 | 10% | 12 h | 10 h | 20k |
| Jun 13, 2020 | No storm report | 3,446 | 13% | 4.8 h | 4.8 h | 16k |
| Mar 29, 2020 | Thunderstorms | 2,462 | 9% | 15 h | 13 h | 16k |
| May 8, 2024 | Thunderstorms | 3,007 | 11% | 12 h | 1.2 h | 14k |
| Jun 21, 2019 | Thunderstorms | 1,230 | 5% | 19 h | – | 13k |
| Sep 13, 2021 | No storm report | 2,633 | 10% | 4.0 h | 1.8 h | 10k |
| Feb 28, 2025 | No storm report | 3,864 | 14% | 2.5 h | 2.5 h | 9.7k |
| Aug 16, 2024 | Thunderstorms | 1,386 | 5% | 8.8 h | 7.8 h | 8.9k |
| Apr 26, 2024 | No storm report | 3,815 | 14% | 2.2 h | 2.0 h | 8.6k |
| Sep 1, 2021 | Hurricane Ida | 1,891 | 7% | 6.0 h | 3.8 h | 8.1k |
| Feb 16, 2025 | No storm report | 2,087 | 8% | 6.5 h | 5.0 h | 7.8k |
| Aug 12, 2023 | No storm report | 2,725 | 10% | 3.5 h | 48 min | 7.0k |
| Nov 17, 2022 | No storm report | 3,573 | 13% | 1.8 h | 1.8 h | 6.3k |
| Jul 31, 2020 | Thunderstorms | 1,901 | 7% | 7.0 h | 6.8 h | 6.2k |
| Jul 2, 2021 | No storm report | 960 | 4% | 6.2 h | – | 6.0k |
| Dec 11, 2021 | Thunderstorms | 1,693 | 6% | 5.8 h | 6.2 h | 5.8k |
| Dec 18, 2025 | No storm report | 517 | 2% | 13 h | – | 5.5k |
| Nov 2, 2025 | No storm report | 1,088 | 4% | 5.0 h | – | 5.4k |
| Sep 9, 2023 | No storm report | 3,004 | 11% | 1.8 h | 2.5 h | 5.3k |
| Mar 12, 2022 | Winter storm | 551 | 2% | 12 h | – | 5.2k |
| Dec 11, 2022 | No storm report | 866 | 3% | 6.2 h | – | 5.2k |
| Jul 6, 2022 | Thunderstorms | 1,243 | 5% | 6.0 h | – | 5.0k |
| Jun 29, 2024 | No storm report | 1,063 | 4% | 4.8 h | – | 5.0k |
| Jun 11, 2023 | No storm report | 1,963 | 7% | 4.0 h | 2.8 h | 4.9k |
| Jun 21, 2021 | Thunderstorms | 1,346 | 5% | 4.2 h | – | 4.8k |
| Feb 18, 2023 | No storm report | 3,740 | 14% | 1.5 h | 1.2 h | 4.6k |
| Jan 16, 2022 | No storm report | 2,555 | 9% | 3.8 h | 2.0 h | 4.5k |
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 Roane from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 70%
- Thunderstorms 23%
- Tropical storm 3.1%
- Winter storm 2.2%
- Flooding 0.8%
- Windstorm 0.7%
Who keeps the lights on
Utilities serving Roane
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 |
|---|---|---|---|---|---|---|
| Volunteer Electric Coop | Cooperative | 685 | 436 | 5.80 | 13.1 | 105k |
| City of Lenoir | Municipal | 157 | 157 | 1.57 | 12.8 | 63k |
| City of Clinton | Municipal | 159 | 118 | 1.97 | 13.7 | 26k |
| City of Rockwood | Municipal | 576 | 170 | 3.50 | 13.3 | 12k |
| City of Harriman | Municipal | 371 | 371 | 3.89 | 14.0 | 9.4k |
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 27,008 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 →