County annual report · FIPS 47031
2018 Coffee County, TN Power Outage Report
In 2018, customers in Coffee County, TN went without power for an average of 1.1 hours, a total of 38K customer-hours (Tennessee average 2.1 hours). That ranks 32nd worst of 71 Tennessee counties and 2255th of 2,798 nationally.
Compared with TN, the US and 2017
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Coffee County, 2018
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 22, 2018 18:45 | June 23, 2018 09:45 | 15h | 4,602 | 15K |
| 2 | January 20, 2018 20:30 | January 20, 2018 23:00 | 2h 30m | 2,611 | 1,487 |
| 3 | June 27, 2018 21:30 | June 27, 2018 22:15 | 45m | 1,912 | 828 |
| 4 | November 9, 2018 22:00 | November 9, 2018 23:15 | 1h 15m | 1,290 | 324 |
| 5 | June 21, 2018 13:30 | June 21, 2018 15:00 | 1h 30m | 1,109 | 572 |
| 6 | May 22, 2018 23:00 | May 22, 2018 23:30 | 30m | 1,108 | 278 |
| 7 | March 28, 2018 20:45 | March 28, 2018 23:00 | 2h 15m | 675 | 1,040 |
| 8 | April 23, 2018 03:30 | April 23, 2018 08:45 | 5h 15m | 672 | 1,029 |
| 9 | October 5, 2018 22:00 | October 6, 2018 01:00 | 3h | 661 | 501 |
| 10 | June 17, 2018 00:45 | June 17, 2018 02:15 | 1h 30m | 626 | 473 |
Outage episodes by size in 2018: 36 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 2018, 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 | 2018 | 2.9 hrs | 1.62 | 1.5 hrs | 1.29 |
| Sequachee Valley Electric Coop | 2018 | 7.0 hrs | 3.05 | 3.0 hrs | 2.51 |
| Tullahoma Board-Public Utils | 2018 | 53 min | 1.14 | 21 min | 0.51 |
| 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 55% of Tennessee's customers in 2018; 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, 2018, 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/2018/tennessee/coffee-county