County annual report · FIPS 47089
2017 Jefferson County, TN Power Outage Report
In 2017, customers in Jefferson County, TN went without power for an average of 0.8 hours, a total of 26K customer-hours (Tennessee average 5.6 hours). That ranks 32nd worst of 68 Tennessee counties and 2139th of 2,786 nationally.
Compared with TN, the US and 2016
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Jefferson County, 2017
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 1, 2017 07:15 | September 1, 2017 07:45 | 30m | 2,153 | 1,077 |
| 2 | December 23, 2017 11:00 | December 23, 2017 20:45 | 9h 45m | 1,205 | 2,084 |
| 3 | May 28, 2017 03:00 | May 30, 2017 10:45 | 2d 7h | 881 | 12K |
| 4 | April 6, 2017 02:00 | April 6, 2017 18:15 | 16h 15m | 745 | 4,697 |
| 5 | May 5, 2017 12:30 | May 5, 2017 13:30 | 1h | 621 | 621 |
| 6 | May 6, 2017 13:15 | May 6, 2017 14:45 | 1h 30m | 620 | 160 |
| 7 | February 25, 2017 09:00 | February 25, 2017 22:30 | 13h 30m | 339 | 991 |
| 8 | April 9, 2017 21:00 | April 9, 2017 22:00 | 1h | 159 | 159 |
| 9 | June 5, 2017 18:45 | June 5, 2017 19:45 | 1h | 157 | 157 |
| 10 | June 12, 2017 15:00 | June 12, 2017 19:30 | 4h 30m | 156 | 98 |
Outage episodes by size in 2017: 13 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 Jefferson County reported on EIA Form 861 for 2017, 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 | 2017 | 4.1 hrs | 1.60 | 2.6 hrs | 1.44 |
| Appalachian Electric Coop | 2017 | 5.0 hrs | 2.17 | 3.7 hrs | 2.00 |
| Holston Electric Coop, Inc | 2017 | 1.6 hrs | 1.26 | 1.6 hrs | 1.26 |
| Sevier County Electric System | 2017 | 14.0 hrs | 2.93 | 6.3 hrs | 2.13 |
| 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 2017; 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, 2017, 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/2017/tennessee/jefferson-county