County annual report · FIPS 47153
2025 Sequatchie County, TN Power Outage Report
In 2025, customers in Sequatchie County, TN went without power for an average of 10.5 hours, a total of 93K customer-hours (Tennessee average 4.3 hours). That ranks 9th worst of 81 Tennessee counties and 762nd of 3,000 nationally.
Compared with TN, the US and 2024
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Sequatchie County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 14, 2025 04:30 | June 14, 2025 12:45 | 8h 15m | 7,612 | 46K |
| 2 | June 7, 2025 21:00 | June 8, 2025 19:00 | 22h | 3,979 | 8,832 |
| 3 | October 31, 2025 17:15 | November 2, 2025 15:15 | 1d 22h | 3,013 | 2,783 |
| 4 | November 3, 2025 18:00 | November 3, 2025 18:15 | 15m | 2,713 | 678 |
| 5 | December 19, 2025 03:15 | December 24, 2025 15:30 | 5d 12h | 967 | 7,507 |
| 6 | June 13, 2025 07:15 | June 13, 2025 08:30 | 1h 15m | 955 | 286 |
| 7 | September 23, 2025 10:15 | September 23, 2025 13:30 | 3h 15m | 766 | 959 |
| 8 | February 16, 2025 08:15 | February 27, 2025 18:15 | 11d 10h | 725 | 2,685 |
| 9 | June 17, 2025 20:15 | June 18, 2025 08:30 | 12h 15m | 684 | 1,072 |
| 10 | October 15, 2025 19:45 | October 15, 2025 20:00 | 15m | 681 | 170 |
Outage episodes by size in 2025: 30 reached 100+ customers, 4 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Sequatchie County reported on EIA Form 861 for 2025, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| City of Chattanooga - (TN) | 2021 | 73 min | 0.60 | 59 min | 0.53 |
| Sequachee Valley Electric Coop | 2024 | 5.0 hrs | 3.09 | 4.2 hrs | 2.69 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Tennessee's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 8,785 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Sequatchie County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Sequatchie County, TN annual power outage report, 2025, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2025/tennessee/sequatchie-county