County annual report · FIPS 47153
2021 Sequatchie County, TN Power Outage Report
In 2021, customers in Sequatchie County, TN went without power for an average of 4.9 hours, a total of 43K customer-hours (Tennessee average 3.7 hours). That ranks 26th worst of 84 Tennessee counties and 1344th of 2,974 nationally.
Compared with TN, the US and 2020
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Sequatchie County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 7, 2021 16:45 | August 10, 2021 00:45 | 2d 8h | 1,980 | 716 |
| 2 | April 24, 2021 10:00 | April 26, 2021 12:45 | 2d 2h | 950 | 31K |
| 3 | February 18, 2021 08:15 | February 18, 2021 16:15 | 8h | 940 | 487 |
| 4 | October 11, 2021 22:45 | October 12, 2021 01:00 | 2h 15m | 478 | 493 |
| 5 | December 29, 2021 20:15 | December 29, 2021 22:00 | 1h 45m | 393 | 404 |
| 6 | February 1, 2021 07:00 | February 1, 2021 08:30 | 1h 30m | 361 | 214 |
| 7 | June 22, 2021 00:15 | June 22, 2021 02:45 | 2h 30m | 243 | 410 |
| 8 | November 14, 2021 19:45 | November 14, 2021 23:15 | 3h 30m | 237 | 421 |
| 9 | August 31, 2021 06:15 | August 31, 2021 16:45 | 10h 30m | 186 | 319 |
| 10 | August 22, 2021 20:30 | August 23, 2021 05:45 | 9h 15m | 182 | 1,289 |
Outage episodes by size in 2021: 14 reached 100+ customers, 1 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 2021, 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 | 2021 | 5.8 hrs | 3.71 | 4.5 hrs | 3.34 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 73% of Tennessee's customers in 2021; 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, 2021, 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/2021/tennessee/sequatchie-county