County annual report · FIPS 47105
2025 Loudon County, TN Power Outage Report
In 2025, customers in Loudon County, TN went without power for an average of 4.3 hours, a total of 119K customer-hours (Tennessee average 4.3 hours). That ranks 37th worst of 81 Tennessee counties and 1690th 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 Loudon 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 | May 20, 2025 17:15 | May 21, 2025 23:00 | 1d 5h | 6,203 | 13K |
| 2 | April 5, 2025 02:30 | April 5, 2025 03:45 | 1h 15m | 4,243 | 1,066 |
| 3 | October 5, 2025 01:45 | October 5, 2025 08:45 | 7h | 3,986 | 10K |
| 4 | June 13, 2025 23:30 | June 14, 2025 01:00 | 1h 30m | 3,414 | 3,420 |
| 5 | February 15, 2025 11:15 | February 18, 2025 16:15 | 3d 5h | 2,446 | 13K |
| 6 | December 16, 2025 13:00 | December 16, 2025 20:00 | 7h | 2,267 | 3,030 |
| 7 | August 27, 2025 04:45 | August 29, 2025 11:00 | 2d 6h | 2,251 | 665 |
| 8 | July 7, 2025 15:00 | July 7, 2025 20:15 | 5h 15m | 2,107 | 4,679 |
| 9 | July 8, 2025 09:15 | July 8, 2025 19:30 | 10h 15m | 2,095 | 3,454 |
| 10 | December 18, 2025 13:15 | December 20, 2025 00:45 | 1d 11h | 1,737 | 9,363 |
Outage episodes by size in 2025: 65 reached 100+ customers, 27 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 Loudon 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 |
|---|---|---|---|---|---|
| Fort Loudoun Electric Coop | 2024 | 7.9 hrs | 2.85 | 6.4 hrs | 2.60 |
| City of Lenoir - (TN) | 2021 | 2.6 hrs | 1.57 | 2.6 hrs | 1.57 |
| Loudon Utilities Board | - | - | - | - | - |
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 ÷ 27,681 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. Loudon County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Loudon 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/loudon-county