County annual report · FIPS 47171
2021 Unicoi County, TN Power Outage Report
In 2021, customers in Unicoi County, TN went without power for an average of 0.5 hours, a total of 5,650 customer-hours (Tennessee average 3.7 hours). That ranks 71st worst of 84 Tennessee counties and 2823rd 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 Unicoi 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 28, 2021 14:45 | March 28, 2021 21:45 | 7h | 879 | 1,565 |
| 2 | August 2, 2021 13:45 | August 3, 2021 15:45 | 1d 2h | 725 | 504 |
| 3 | June 7, 2021 13:45 | June 7, 2021 17:45 | 4h | 677 | 2,108 |
| 4 | July 29, 2021 21:45 | July 30, 2021 01:45 | 4h | 158 | 49 |
| 5 | March 27, 2021 17:15 | March 27, 2021 23:15 | 6h | 67 | 196 |
| 6 | September 15, 2021 18:15 | September 15, 2021 20:00 | 1h 45m | 50 | 86 |
| 7 | September 2, 2021 00:45 | September 2, 2021 04:00 | 3h 15m | 43 | 118 |
| 8 | February 16, 2021 00:45 | February 16, 2021 05:15 | 4h 30m | 42 | 179 |
| 9 | June 9, 2021 20:15 | June 9, 2021 22:15 | 2h | 33 | 55 |
| 10 | March 9, 2021 21:45 | March 10, 2021 00:15 | 2h 30m | 25 | 29 |
Outage episodes by size in 2021: 4 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 Unicoi 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 |
|---|---|---|---|---|---|
| French Broad Elec Member Corp | - | - | - | - | - |
| Mountain Electric Coop, Inc | - | - | - | - | - |
| City of Elizabethton - (TN) | - | - | - | - | - |
| Town of Erwin - (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 ÷ 12,248 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. Unicoi County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Unicoi 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/). https://massoutage.com/reports/2021/tennessee/unicoi-county