County annual report · FIPS 47173
2015 Union County, TN Power Outage Report
In 2015, customers in Union County, TN went without power for an average of 2.3 hours, a total of 22K customer-hours (Tennessee average 2.4 hours). That ranks 16th worst of 50 Tennessee counties and 1120th of 2,484 nationally.
Compared with TN, the US
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Union County, 2015
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 28, 2015 20:15 | December 29, 2015 04:00 | 7h 45m | 7,503 | 5,738 |
| 2 | July 14, 2015 19:45 | July 15, 2015 01:15 | 5h 30m | 1,389 | 2,071 |
| 3 | October 10, 2015 07:45 | October 10, 2015 09:45 | 2h | 855 | 727 |
| 4 | June 21, 2015 19:30 | June 22, 2015 18:45 | 23h 15m | 686 | 2,232 |
| 5 | July 4, 2015 00:15 | July 4, 2015 01:30 | 1h 15m | 571 | 713 |
| 6 | December 25, 2015 17:00 | December 26, 2015 13:15 | 20h 15m | 570 | 2,102 |
| 7 | November 28, 2015 14:45 | November 29, 2015 04:30 | 13h 45m | 420 | 342 |
| 8 | June 24, 2015 13:45 | June 24, 2015 20:00 | 6h 15m | 364 | 505 |
| 9 | October 28, 2015 10:15 | October 28, 2015 17:00 | 6h 45m | 335 | 591 |
| 10 | August 5, 2015 19:30 | August 6, 2015 01:30 | 6h | 189 | 948 |
Outage episodes by size in 2015: 14 reached 100+ customers, 2 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 2015, 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 | 2015 | 1.8 hrs | 1.52 | 1.6 hrs | 1.43 |
| Knoxville Utilities Board | 2015 | 3.5 hrs | 1.60 | 2.0 hrs | 1.44 |
| City of Clinton - (TN) | 2015 | 2.0 hrs | 2.06 | 2.0 hrs | 2.06 |
| City of LaFollette | 2015 | 2.6 hrs | 2.35 | 2.6 hrs | 2.35 |
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 2015; 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, 2015, 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/2015/tennessee/union-county