County annual report · FIPS 47173
2024 Union County, TN Power Outage Report
In 2024, customers in Union County, TN went without power for an average of 12.8 hours, a total of 121K customer-hours (Tennessee average 4.8 hours). That ranks 11th worst of 84 Tennessee counties and 750th 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 Union 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 | May 23, 2024 02:00 | May 23, 2024 21:30 | 19h 30m | 6,945 | 7,259 |
| 2 | February 28, 2024 18:00 | February 29, 2024 23:15 | 1d 5h | 5,992 | 3,703 |
| 3 | April 16, 2024 10:00 | April 19, 2024 13:45 | 3d 3h | 5,583 | 11K |
| 4 | September 27, 2024 01:30 | September 30, 2024 19:00 | 3d 17h | 3,707 | 35K |
| 5 | July 30, 2024 21:15 | August 1, 2024 10:00 | 1d 12h | 2,278 | 12K |
| 6 | May 9, 2024 00:15 | May 10, 2024 14:15 | 1d 14h | 1,345 | 5,686 |
| 7 | July 17, 2024 18:45 | July 18, 2024 11:00 | 16h 15m | 1,259 | 2,610 |
| 8 | February 27, 2024 14:45 | February 27, 2024 15:00 | 15m | 1,086 | 272 |
| 9 | May 27, 2024 06:30 | May 28, 2024 17:15 | 1d 10h | 928 | 6,027 |
| 10 | January 9, 2024 13:30 | January 10, 2024 10:45 | 21h 15m | 766 | 2,638 |
Outage episodes by size in 2024: 42 reached 100+ customers, 8 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 Union 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 |
|---|---|---|---|---|---|
| Powell Valley Electric Coop | 2024 | 8.4 hrs | 4.97 | 1.7 hrs | 3.38 |
| Knoxville Utilities Board | 2024 | 5.9 hrs | 1.86 | 3.2 hrs | 1.40 |
| City of Clinton - (TN) | 2024 | 4.4 hrs | 1.23 | 3.0 hrs | 1.02 |
| City of LaFollette | 2024 | 12.4 hrs | 5.87 | 4.6 hrs | 4.16 |
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 ÷ 9,474 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. Union County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Union 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/union-county