County annual report · FIPS 47155
2018 Sevier County, TN Power Outage Report
In 2018, customers in Sevier County, TN went without power for an average of 3.7 hours, a total of 265K customer-hours (Tennessee average 2.1 hours). That ranks 15th worst of 71 Tennessee counties and 1313th of 2,798 nationally.
Compared with TN, the US and 2017
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Sevier County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 8, 2018 00:00 | March 8, 2018 00:45 | 45m | 11,098 | 2,798 |
| 2 | January 4, 2018 03:00 | January 4, 2018 06:15 | 3h 15m | 6,474 | 2,763 |
| 3 | June 7, 2018 21:45 | June 8, 2018 02:15 | 4h 30m | 6,466 | 3,871 |
| 4 | November 6, 2018 04:15 | November 8, 2018 01:15 | 1d 21h | 6,024 | 27K |
| 5 | June 25, 2018 14:00 | June 26, 2018 07:00 | 17h | 4,585 | 3,572 |
| 6 | November 28, 2018 10:30 | November 28, 2018 22:45 | 12h 15m | 4,297 | 7,265 |
| 7 | June 26, 2018 21:30 | June 28, 2018 05:30 | 1d 8h | 3,814 | 11K |
| 8 | July 24, 2018 11:15 | July 24, 2018 22:30 | 11h 15m | 3,619 | 1,767 |
| 9 | August 27, 2018 18:45 | August 28, 2018 07:30 | 12h 45m | 3,617 | 6,679 |
| 10 | July 21, 2018 02:45 | July 22, 2018 21:15 | 1d 18h | 3,131 | 13K |
Outage episodes by size in 2018: 158 reached 100+ customers, 34 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 Sevier County reported on EIA Form 861 for 2018, 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 | 2018 | 3.5 hrs | 1.84 | 2.1 hrs | 1.49 |
| Appalachian Electric Coop | 2018 | 4.9 hrs | 3.34 | 4.9 hrs | 3.34 |
| Sevier County Electric System | 2018 | 4.7 hrs | 2.99 | 4.3 hrs | 2.88 |
| 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 55% of Tennessee's customers in 2018; 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, 2018, 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/2018/tennessee/sevier-county