County annual report · FIPS 47089
2015 Jefferson County, TN Power Outage Report
In 2015, customers in Jefferson County, TN went without power for an average of 0.1 hours, a total of 3,929 customer-hours (Tennessee average 2.4 hours). That ranks 33rd worst of 50 Tennessee counties and 2313th 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 Jefferson 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 | July 24, 2015 17:15 | July 24, 2015 22:30 | 5h 15m | 715 | 2,421 |
| 2 | June 19, 2015 19:30 | June 20, 2015 03:30 | 8h | 67 | 179 |
| 3 | July 10, 2015 08:15 | July 10, 2015 10:15 | 2h | 67 | 134 |
| 4 | September 25, 2015 05:30 | September 25, 2015 07:00 | 1h 30m | 67 | 101 |
| 5 | September 25, 2015 08:15 | September 25, 2015 12:45 | 4h 30m | 67 | 302 |
| 6 | June 19, 2015 10:45 | June 19, 2015 14:45 | 4h | 62 | 50 |
| 7 | June 19, 2015 06:45 | June 19, 2015 09:00 | 2h 15m | 61 | 133 |
| 8 | August 14, 2015 14:00 | August 14, 2015 15:15 | 1h 15m | 61 | 76 |
| 9 | August 20, 2015 06:45 | August 20, 2015 13:00 | 6h 15m | 52 | 220 |
| 10 | July 20, 2015 20:45 | July 20, 2015 22:15 | 1h 30m | 32 | 48 |
Outage episodes by size in 2015: 1 reached 100+ customers, 0 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 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 |
|---|---|---|---|---|---|
| Knoxville Utilities Board | 2015 | 3.5 hrs | 1.60 | 2.0 hrs | 1.44 |
| Appalachian Electric Coop | 2015 | 6.5 hrs | 3.48 | 2.0 hrs | 1.64 |
| Sevier County Electric System | 2015 | 5.2 hrs | 2.20 | 3.7 hrs | 1.92 |
| Holston Electric Coop, Inc | - | - | - | - | - |
| 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 2015; 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, 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/jefferson-county