County annual report · FIPS 47165
2024 Sumner County, TN Power Outage Report
In 2024, customers in Sumner County, TN went without power for an average of 2.9 hours, a total of 249K customer-hours (Tennessee average 4.8 hours). That ranks 47th worst of 84 Tennessee counties and 2124th of 2,990 nationally.
Compared with TN, the US and 2023
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Sumner County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 10, 2024 14:00 | January 10, 2024 18:45 | 4h 45m | 17,222 | 4,313 |
| 2 | May 8, 2024 11:30 | May 11, 2024 22:30 | 3d 11h | 8,256 | 67K |
| 3 | May 26, 2024 10:30 | May 28, 2024 07:45 | 1d 21h | 7,843 | 19K |
| 4 | May 20, 2024 11:30 | May 21, 2024 03:00 | 15h 30m | 6,907 | 8,763 |
| 5 | November 18, 2024 14:30 | November 18, 2024 23:15 | 8h 45m | 5,425 | 1,409 |
| 6 | August 21, 2024 13:15 | August 21, 2024 23:00 | 9h 45m | 3,798 | 2,223 |
| 7 | July 19, 2024 14:15 | July 19, 2024 16:30 | 2h 15m | 3,715 | 940 |
| 8 | October 22, 2024 13:15 | October 23, 2024 01:15 | 12h | 3,696 | 1,978 |
| 9 | September 27, 2024 06:45 | September 28, 2024 03:15 | 20h 30m | 3,328 | 6,892 |
| 10 | February 6, 2024 04:15 | February 7, 2024 02:30 | 22h 15m | 2,905 | 4,151 |
Outage episodes by size in 2024: 96 reached 100+ customers, 37 reached 1,000+ customers, 1 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 Sumner County reported on EIA Form 861 for 2024, 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 |
|---|---|---|---|---|---|
| Tri-County Elec Member Corp (TN) | 2024 | 6.4 hrs | 3.96 | 4.0 hrs | 3.19 |
| Nashville Electric Service | 2024 | 0 min | 0.00 | 87 min | 1.01 |
| City of Gallatin - (TN) | 2024 | 2.7 hrs | 1.45 | 52 min | 0.82 |
| Cumberland Elec Member Corp | - | - | - | - | - |
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 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 85,061 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. Sumner County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sumner County, TN annual power outage report, 2024, 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/2024/tennessee/sumner-county