County annual report · FIPS 47155
2023 Sevier County, TN Power Outage Report
In 2023, customers in Sevier County, TN went without power for an average of 7.5 hours, a total of 533K customer-hours (Tennessee average 11.1 hours). That ranks 26th worst of 83 Tennessee counties and 1084th of 2,977 nationally.
Compared with TN, the US and 2022
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Sevier County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 7, 2023 12:45 | August 11, 2023 01:45 | 3d 13h | 14,002 | 100K |
| 2 | April 1, 2023 04:15 | April 3, 2023 22:00 | 2d 17h | 11,901 | 87K |
| 3 | January 12, 2023 16:15 | January 14, 2023 07:45 | 1d 15h | 8,571 | 49K |
| 4 | March 25, 2023 06:15 | March 26, 2023 17:30 | 1d 11h | 7,998 | 41K |
| 5 | March 3, 2023 13:30 | March 5, 2023 23:15 | 2d 9h | 5,324 | 31K |
| 6 | July 6, 2023 11:00 | July 7, 2023 06:30 | 19h 30m | 3,836 | 3,428 |
| 7 | July 29, 2023 16:30 | July 30, 2023 11:15 | 18h 45m | 3,623 | 12K |
| 8 | August 2, 2023 11:30 | August 2, 2023 22:30 | 11h | 3,346 | 4,039 |
| 9 | August 12, 2023 19:00 | August 13, 2023 18:15 | 23h 15m | 3,344 | 12K |
| 10 | June 12, 2023 02:00 | June 12, 2023 21:30 | 19h 30m | 2,943 | 8,076 |
Outage episodes by size in 2023: 135 reached 100+ customers, 29 reached 1,000+ customers, 2 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 Sevier County reported on EIA Form 861 for 2023, 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 | 2023 | 6.0 hrs | 2.42 | 2.1 hrs | 1.50 |
| Appalachian Electric Coop | 2023 | 10.4 hrs | 3.67 | 3.2 hrs | 2.86 |
| Sevier County Electric System | 2023 | 7.7 hrs | 3.02 | 3.6 hrs | 1.98 |
| City of Newport - (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 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 71,320 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. Sevier County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sevier County, TN annual power outage report, 2023, 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/2023/tennessee/sevier-county