County annual report · FIPS 47165
2019 Sumner County, TN Power Outage Report
In 2019, customers in Sumner County, TN went without power for an average of 2.5 hours, a total of 210K customer-hours (Tennessee average 2.7 hours). That ranks 33rd worst of 86 Tennessee counties and 1851st of 2,945 nationally.
Compared with TN, the US and 2018
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Sumner County, 2019
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 17, 2019 10:45 | July 17, 2019 20:00 | 9h 15m | 8,941 | 6,732 |
| 2 | April 27, 2019 11:00 | April 27, 2019 16:15 | 5h 15m | 8,018 | 2,045 |
| 3 | June 27, 2019 00:15 | June 29, 2019 04:00 | 2d 3h | 6,660 | 26K |
| 4 | August 6, 2019 20:45 | August 8, 2019 02:00 | 1d 5h | 6,575 | 21K |
| 5 | February 22, 2019 16:15 | February 22, 2019 22:15 | 6h | 5,902 | 4,346 |
| 6 | May 28, 2019 11:00 | May 28, 2019 19:15 | 8h 15m | 5,800 | 3,707 |
| 7 | June 26, 2019 18:30 | June 26, 2019 22:45 | 4h 15m | 4,954 | 5,548 |
| 8 | July 3, 2019 16:15 | July 4, 2019 16:30 | 1d | 4,953 | 1,568 |
| 9 | February 17, 2019 17:00 | February 17, 2019 20:30 | 3h 30m | 3,790 | 3,435 |
| 10 | November 27, 2019 06:30 | November 27, 2019 17:00 | 10h 30m | 3,092 | 4,438 |
Outage episodes by size in 2019: 103 reached 100+ customers, 30 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 Sumner County reported on EIA Form 861 for 2019, 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) | 2018 | 4.7 hrs | 3.38 | 3.3 hrs | 3.12 |
| Nashville Electric Service | 2018 | 1.8 hrs | 1.56 | 1.8 hrs | 1.56 |
| Cumberland Elec Member Corp | - | - | - | - | - |
| City of Gallatin - (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 73% of Tennessee's customers in 2019; 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, 2019, 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/2019/tennessee/sumner-county