County annual report · FIPS 47089
2024 Jefferson County, TN Power Outage Report
In 2024, customers in Jefferson County, TN went without power for an average of 8.8 hours, a total of 286K customer-hours (Tennessee average 4.8 hours). That ranks 20th worst of 84 Tennessee counties and 1031st of 2,990 nationally.
Compared with TN, the US and 2023
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Jefferson County, 2024
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 27, 2024 05:00 | October 1, 2024 22:30 | 4d 17h | 9,007 | 157K |
| 2 | April 5, 2024 05:15 | April 5, 2024 07:30 | 2h 15m | 4,082 | 5,386 |
| 3 | July 30, 2024 20:15 | August 1, 2024 07:00 | 1d 10h | 2,795 | 9,988 |
| 4 | June 4, 2024 14:30 | June 5, 2024 02:30 | 12h | 2,281 | 2,331 |
| 5 | February 10, 2024 19:00 | February 10, 2024 21:45 | 2h 45m | 2,078 | 4,676 |
| 6 | August 14, 2024 23:45 | August 15, 2024 00:30 | 45m | 1,767 | 884 |
| 7 | August 15, 2024 06:15 | August 15, 2024 06:45 | 30m | 1,715 | 857 |
| 8 | January 8, 2024 19:45 | January 8, 2024 23:15 | 3h 30m | 1,569 | 2,263 |
| 9 | February 27, 2024 14:45 | February 27, 2024 15:00 | 15m | 1,529 | 382 |
| 10 | August 18, 2024 08:15 | August 18, 2024 15:00 | 6h 45m | 1,486 | 465 |
Outage episodes by size in 2024: 93 reached 100+ customers, 19 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 2024, 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 | 2024 | 5.9 hrs | 1.86 | 3.2 hrs | 1.40 |
| Appalachian Electric Coop | 2024 | 15.5 hrs | 3.67 | 4.9 hrs | 2.86 |
| Holston Electric Coop, Inc | 2024 | 14.9 hrs | 3.45 | 3.3 hrs | 2.31 |
| Sevier County Electric System | 2024 | 5.5 hrs | 2.42 | 3.8 hrs | 2.12 |
| 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 2024; 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, 2024, 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/2024/tennessee/jefferson-county