County annual report · FIPS 47051
2021 Franklin County, TN Power Outage Report
In 2021, customers in Franklin County, TN went without power for an average of 1.7 hours, a total of 38K customer-hours (Tennessee average 3.7 hours). That ranks 52nd worst of 84 Tennessee counties and 2375th 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 Franklin 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 | April 1, 2021 13:00 | April 1, 2021 14:45 | 1h 45m | 2,393 | 2,394 |
| 2 | February 15, 2021 10:45 | February 16, 2021 12:00 | 1d 1h | 1,804 | 5,735 |
| 3 | April 7, 2021 11:30 | April 7, 2021 15:00 | 3h 30m | 1,346 | 2,087 |
| 4 | October 4, 2021 15:00 | October 4, 2021 19:00 | 4h | 1,209 | 925 |
| 5 | April 25, 2021 01:45 | April 25, 2021 06:00 | 4h 15m | 1,197 | 1,412 |
| 6 | February 4, 2021 02:30 | February 4, 2021 06:30 | 4h | 1,147 | 2,394 |
| 7 | July 11, 2021 21:00 | July 12, 2021 04:00 | 7h | 967 | 1,022 |
| 8 | April 14, 2021 19:45 | April 14, 2021 22:45 | 3h | 667 | 701 |
| 9 | December 11, 2021 13:15 | December 11, 2021 18:45 | 5h 30m | 653 | 2,076 |
| 10 | May 26, 2021 18:45 | May 26, 2021 20:00 | 1h 15m | 619 | 312 |
Outage episodes by size in 2021: 27 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 Franklin 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 |
|---|---|---|---|---|---|
| Duck River Elec Member Corp | 2021 | 7.7 hrs | 2.06 | 2.2 hrs | 1.59 |
| Sequachee Valley Electric Coop | 2021 | 5.8 hrs | 3.71 | 4.5 hrs | 3.34 |
| City of Fayetteville | 2021 | 2.8 hrs | 1.88 | 2.4 hrs | 1.81 |
| Tullahoma Board-Public Utils | 2021 | 6.0 hrs | 3.56 | 27 min | 2.19 |
| City of Winchester - (TN) | - | - | - | - | - |
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 ÷ 22,923 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. Franklin County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Franklin 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/franklin-county