County annual report · FIPS 47001
2025 Anderson County, TN Power Outage Report
In 2025, customers in Anderson County, TN went without power for an average of 1.3 hours, a total of 57K customer-hours (Tennessee average 4.3 hours). That ranks 59th worst of 81 Tennessee counties and 2664th 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 Anderson 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 | July 30, 2025 14:00 | July 31, 2025 00:00 | 10h | 3,299 | 936 |
| 2 | May 17, 2025 06:00 | May 18, 2025 11:00 | 1d 5h | 1,814 | 10K |
| 3 | June 23, 2025 07:15 | June 23, 2025 08:45 | 1h 30m | 1,719 | 1,272 |
| 4 | March 12, 2025 19:30 | March 12, 2025 19:45 | 15m | 1,581 | 395 |
| 5 | February 16, 2025 12:45 | February 17, 2025 06:30 | 17h 45m | 1,276 | 2,881 |
| 6 | September 23, 2025 18:15 | September 23, 2025 21:00 | 2h 45m | 953 | 243 |
| 7 | March 5, 2025 03:30 | March 5, 2025 15:00 | 11h 30m | 950 | 2,434 |
| 8 | March 11, 2025 19:15 | March 11, 2025 19:30 | 15m | 927 | 232 |
| 9 | August 29, 2025 14:30 | August 29, 2025 15:30 | 1h | 885 | 224 |
| 10 | May 20, 2025 23:45 | May 21, 2025 10:45 | 11h | 874 | 1,507 |
Outage episodes by size in 2025: 55 reached 100+ customers, 5 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 Anderson 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 |
|---|---|---|---|---|---|
| Knoxville Utilities Board | 2024 | 5.9 hrs | 1.86 | 3.2 hrs | 1.40 |
| City of Clinton - (TN) | 2024 | 4.4 hrs | 1.23 | 3.0 hrs | 1.02 |
| City of Oak Ridge | - | - | - | - | - |
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 ÷ 42,752 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. Anderson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Anderson 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/anderson-county