County annual report · FIPS 47041
2025 DeKalb County, TN Power Outage Report
In 2025, customers in DeKalb County, TN went without power for an average of 0.3 hours, a total of 3,427 customer-hours (Tennessee average 4.3 hours). That ranks 71st worst of 81 Tennessee counties and 2898th 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 DeKalb 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 | December 31, 2025 20:15 | December 31, 2025 21:15 | 1h | 1,287 | 1,287 |
| 2 | January 13, 2025 19:15 | January 13, 2025 19:45 | 30m | 548 | 274 |
| 3 | September 12, 2025 21:45 | September 13, 2025 00:45 | 3h | 296 | 542 |
| 4 | September 3, 2025 20:15 | September 3, 2025 21:15 | 1h | 205 | 52 |
| 5 | July 19, 2025 00:15 | July 19, 2025 00:30 | 15m | 170 | 43 |
| 6 | August 6, 2025 14:30 | August 6, 2025 16:00 | 1h 30m | 93 | 49 |
| 7 | October 21, 2025 13:15 | October 21, 2025 19:00 | 5h 45m | 75 | 51 |
| 8 | May 30, 2025 12:30 | May 30, 2025 15:00 | 2h 30m | 36 | 90 |
| 9 | December 15, 2025 01:15 | December 15, 2025 02:45 | 1h 30m | 33 | 50 |
| 10 | March 11, 2025 22:45 | March 12, 2025 00:30 | 1h 45m | 30 | 32 |
Outage episodes by size in 2025: 5 reached 100+ customers, 1 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 DeKalb 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 |
|---|---|---|---|---|---|
| Middle Tennessee E M C | 2024 | 49 min | 0.93 | 42 min | 0.88 |
| Upper Cumberland E M C | 2022 | 4.3 hrs | - | 2.2 hrs | - |
| Caney Fork Electric Coop, Inc | - | - | - | - | - |
| City of Smithville - (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 ÷ 10,381 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. DeKalb County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), DeKalb 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/dekalb-county