County annual report · FIPS 47133
2021 Overton County, TN Power Outage Report
In 2021, customers in Overton County, TN went without power for an average of 1.8 hours, a total of 18K customer-hours (Tennessee average 3.7 hours). That ranks 50th worst of 84 Tennessee counties and 2338th 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 Overton 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 | March 14, 2021 20:30 | March 15, 2021 04:45 | 8h 15m | 808 | 4,361 |
| 2 | February 7, 2021 08:00 | February 8, 2021 05:45 | 21h 45m | 393 | 4,344 |
| 3 | July 23, 2021 12:00 | July 23, 2021 12:15 | 15m | 351 | 88 |
| 4 | May 2, 2021 12:45 | May 2, 2021 13:15 | 30m | 350 | 175 |
| 5 | December 11, 2021 11:15 | December 11, 2021 18:00 | 6h 45m | 349 | 1,309 |
| 6 | March 7, 2021 22:15 | March 8, 2021 00:00 | 1h 45m | 348 | 609 |
| 7 | November 19, 2021 11:30 | November 19, 2021 13:30 | 2h | 309 | 537 |
| 8 | September 29, 2021 13:00 | September 29, 2021 13:15 | 15m | 308 | 77 |
| 9 | December 3, 2021 04:00 | December 3, 2021 05:45 | 1h 45m | 308 | 539 |
| 10 | December 14, 2021 12:30 | December 14, 2021 12:45 | 15m | 308 | 77 |
Outage episodes by size in 2021: 15 reached 100+ customers, 0 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 Overton 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 |
|---|---|---|---|---|---|
| Tri-County Elec Member Corp (TN) | 2021 | 4.2 hrs | 2.98 | 3.9 hrs | 2.89 |
| Volunteer Electric Coop | 2021 | 8.6 hrs | 5.13 | 5.3 hrs | 4.64 |
| Upper Cumberland E M C | 2021 | 14.4 hrs | - | 2.0 hrs | - |
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 ÷ 10,102 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. Overton County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Overton 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/overton-county