County annual report · FIPS 47171
2025 Unicoi County, TN Power Outage Report
In 2025, customers in Unicoi County, TN went without power for an average of 0.5 hours, a total of 6,187 customer-hours (Tennessee average 4.3 hours). That ranks 68th worst of 81 Tennessee counties and 2874th of 3,000 nationally.
Compared with TN, the US and 2024
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Unicoi County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 16, 2025 15:15 | February 16, 2025 19:15 | 4h | 639 | 885 |
| 2 | April 15, 2025 15:45 | April 15, 2025 16:30 | 45m | 475 | 165 |
| 3 | May 8, 2025 15:00 | May 8, 2025 15:30 | 30m | 147 | 41 |
| 4 | September 27, 2025 10:00 | September 27, 2025 12:00 | 2h | 138 | 242 |
| 5 | August 14, 2025 02:00 | August 14, 2025 03:00 | 1h | 126 | 125 |
| 6 | May 3, 2025 22:30 | May 3, 2025 23:00 | 30m | 112 | 35 |
| 7 | March 5, 2025 01:15 | March 6, 2025 05:15 | 1d 4h | 100 | 864 |
| 8 | March 16, 2025 08:15 | March 17, 2025 04:30 | 20h 15m | 93 | 858 |
| 9 | May 17, 2025 09:45 | May 18, 2025 02:00 | 16h 15m | 88 | 555 |
| 10 | May 17, 2025 06:00 | May 17, 2025 08:15 | 2h 15m | 82 | 43 |
Outage episodes by size in 2025: 7 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 2025, 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 |
|---|---|---|---|---|---|
| Mountain Electric Coop, Inc | 2024 | 2.8 hrs | 2.91 | 2.8 hrs | 2.91 |
| French Broad Elec Member Corp | - | - | - | - | - |
| 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 n/a of Tennessee's customers in 2025; 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, 2025, 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/2025/tennessee/unicoi-county