County annual report · FIPS 47165
2017 Sumner County, TN Power Outage Report
In 2017, customers in Sumner County, TN went without power for an average of 1.5 hours, a total of 128K customer-hours (Tennessee average 5.6 hours). That ranks 28th worst of 68 Tennessee counties and 1821st of 2,786 nationally.
Compared with TN, the US and 2016
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Sumner County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 18, 2017 04:00 | June 18, 2017 08:00 | 4h | 6,646 | 4,988 |
| 2 | March 1, 2017 13:15 | March 2, 2017 23:45 | 1d 10h | 2,984 | 7,179 |
| 3 | May 27, 2017 22:15 | May 29, 2017 01:30 | 1d 3h | 2,951 | 11K |
| 4 | September 1, 2017 03:45 | September 7, 2017 15:30 | 6d 11h | 2,888 | 13K |
| 5 | May 4, 2017 08:15 | May 4, 2017 10:45 | 2h 30m | 2,282 | 2,780 |
| 6 | March 27, 2017 20:00 | March 28, 2017 04:30 | 8h 30m | 1,949 | 2,803 |
| 7 | June 6, 2017 19:15 | June 6, 2017 22:30 | 3h 15m | 1,917 | 494 |
| 8 | October 16, 2017 18:30 | October 16, 2017 21:00 | 2h 30m | 1,596 | 1,680 |
| 9 | May 31, 2017 11:45 | May 31, 2017 12:00 | 15m | 1,527 | 382 |
| 10 | May 20, 2017 21:15 | May 21, 2017 10:00 | 12h 45m | 1,508 | 6,077 |
Outage episodes by size in 2017: 83 reached 100+ customers, 24 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 2017, 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) | 2017 | 3.3 hrs | 2.44 | 3.0 hrs | 2.29 |
| Nashville Electric Service | 2017 | 1.9 hrs | 1.54 | 1.8 hrs | 1.47 |
| 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 n/a of Tennessee's customers in 2017; 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, 2017, 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/2017/tennessee/sumner-county