County annual report · FIPS 47031
2023 Coffee County, TN Power Outage Report
In 2023, customers in Coffee County, TN went without power for an average of 3.7 hours, a total of 121K customer-hours (Tennessee average 11.1 hours). That ranks 53rd worst of 83 Tennessee counties and 1740th of 2,977 nationally.
Compared with TN, the US and 2022
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Coffee County, 2023
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, 2023 17:00 | August 9, 2023 08:45 | 1d 15h | 6,325 | 69K |
| 2 | July 20, 2023 14:45 | July 21, 2023 02:45 | 12h | 4,041 | 4,342 |
| 3 | December 21, 2023 16:30 | December 21, 2023 17:00 | 30m | 1,729 | 433 |
| 4 | August 10, 2023 07:30 | August 11, 2023 00:15 | 16h 45m | 1,704 | 7,201 |
| 5 | July 18, 2023 22:15 | July 19, 2023 02:15 | 4h | 1,394 | 1,495 |
| 6 | March 3, 2023 16:45 | March 5, 2023 00:45 | 1d 8h | 1,086 | 8,770 |
| 7 | July 8, 2023 23:30 | July 9, 2023 10:30 | 11h | 832 | 2,012 |
| 8 | May 8, 2023 01:00 | May 8, 2023 23:30 | 22h 30m | 751 | 4,606 |
| 9 | January 2, 2023 17:45 | January 2, 2023 20:30 | 2h 45m | 721 | 547 |
| 10 | May 2, 2023 20:00 | May 2, 2023 22:30 | 2h 30m | 717 | 361 |
Outage episodes by size in 2023: 34 reached 100+ customers, 6 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 Coffee County reported on EIA Form 861 for 2023, 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 |
|---|---|---|---|---|---|
| Duck River Elec Member Corp | 2023 | 5.1 hrs | 2.25 | 2.9 hrs | 1.76 |
| Sequachee Valley Electric Coop | 2023 | 8.1 hrs | 3.42 | 3.8 hrs | 2.98 |
| Tullahoma Board-Public Utils | 2023 | 69 min | 2.76 | 27 min | 2.00 |
| Caney Fork Electric Coop, Inc | - | - | - | - | - |
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 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 33,033 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. Coffee County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Coffee County, TN annual power outage report, 2023, 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/2023/tennessee/coffee-county