County annual report · FIPS 47089
2019 Jefferson County, TN Power Outage Report
In 2019, customers in Jefferson County, TN went without power for an average of 1.4 hours, a total of 46K customer-hours (Tennessee average 2.7 hours). That ranks 47th worst of 86 Tennessee counties and 2321st 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 Jefferson 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 | September 20, 2019 18:45 | September 24, 2019 20:15 | 4d 1h | 1,667 | 1,905 |
| 2 | June 16, 2019 15:15 | June 16, 2019 16:00 | 45m | 1,666 | 417 |
| 3 | May 25, 2019 18:00 | May 25, 2019 20:00 | 2h | 1,665 | 2,081 |
| 4 | May 11, 2019 17:30 | May 11, 2019 20:15 | 2h 45m | 1,632 | 439 |
| 5 | June 24, 2019 22:30 | June 25, 2019 02:30 | 4h | 1,632 | 2,873 |
| 6 | June 20, 2019 12:30 | June 20, 2019 16:00 | 3h 30m | 1,628 | 2,458 |
| 7 | April 26, 2019 16:15 | April 26, 2019 20:00 | 3h 45m | 1,625 | 2,499 |
| 8 | June 22, 2019 04:15 | June 22, 2019 11:45 | 7h 30m | 1,300 | 4,851 |
| 9 | August 2, 2019 13:00 | August 3, 2019 03:45 | 14h 45m | 1,265 | 2,610 |
| 10 | August 12, 2019 07:45 | August 12, 2019 08:45 | 1h | 1,235 | 1,232 |
Outage episodes by size in 2019: 35 reached 100+ customers, 12 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 Jefferson 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 |
|---|---|---|---|---|---|
| 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 |
| Holston Electric Coop, Inc | 2018 | 6.0 hrs | 2.49 | 2.2 hrs | 1.83 |
| 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 73% of Tennessee's customers in 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 32,422 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. Jefferson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson 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/jefferson-county