County annual report · FIPS 47155
2020 Sevier County, TN Power Outage Report
In 2020, customers in Sevier County, TN went without power for an average of 20.2 hours, a total of 1.4M customer-hours (Tennessee average 6.5 hours). That ranks 2nd worst of 84 Tennessee counties and 424th of 3,019 nationally.
Compared with TN, the US and 2019
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Sevier County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 24, 2020 02:30 | December 31, 2020 00:15 | 6d 21h | 27,962 | 1.1M |
| 2 | July 31, 2020 20:45 | August 5, 2020 10:45 | 4d 14h | 10,397 | 93K |
| 3 | November 10, 2020 13:45 | November 12, 2020 00:00 | 1d 10h | 8,373 | 3,303 |
| 4 | September 19, 2020 21:00 | September 19, 2020 21:45 | 45m | 5,114 | 3,836 |
| 5 | January 11, 2020 07:15 | January 15, 2020 02:15 | 3d 19h | 4,797 | 62K |
| 6 | April 12, 2020 02:00 | April 14, 2020 06:15 | 2d 4h | 4,356 | 24K |
| 7 | April 23, 2020 13:00 | April 27, 2020 22:45 | 4d 9h | 2,951 | 21K |
| 8 | July 11, 2020 16:30 | July 11, 2020 18:45 | 2h 15m | 2,634 | 3,509 |
| 9 | February 28, 2020 21:00 | March 2, 2020 16:15 | 2d 19h | 2,604 | 2,281 |
| 10 | July 23, 2020 20:30 | July 24, 2020 03:15 | 6h 45m | 2,376 | 4,189 |
Outage episodes by size in 2020: 120 reached 100+ customers, 34 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 2020, 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 | 2020 | 4.7 hrs | 2.11 | 2.1 hrs | 1.65 |
| Appalachian Electric Coop | 2020 | 4.9 hrs | 3.13 | 3.8 hrs | 2.84 |
| Sevier County Electric System | 2020 | 26.1 hrs | 3.60 | 5.4 hrs | 2.14 |
| 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 73% of Tennessee's customers in 2020; 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, 2020, 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/2020/tennessee/sevier-county