County annual report · FIPS 47093
2018 Knox County, TN Power Outage Report
In 2018, customers in Knox County, TN went without power for an average of 2.9 hours, a total of 709K customer-hours (Tennessee average 2.1 hours). That ranks 17th worst of 71 Tennessee counties and 1539th of 2,798 nationally.
Compared with TN, the US and 2017
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Knox County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 12, 2018 08:45 | April 12, 2018 11:30 | 2h 45m | 31,811 | 21K |
| 2 | November 6, 2018 09:45 | November 7, 2018 01:30 | 15h 45m | 30,395 | 152K |
| 3 | January 9, 2018 10:45 | January 9, 2018 12:00 | 1h 15m | 25,037 | 8,076 |
| 4 | July 19, 2018 00:15 | July 25, 2018 04:00 | 6d 3h | 22,442 | 56K |
| 5 | June 26, 2018 13:15 | June 27, 2018 06:15 | 17h | 16,489 | 46K |
| 6 | June 28, 2018 06:45 | June 29, 2018 21:00 | 1d 14h | 8,514 | 8,538 |
| 7 | December 9, 2018 04:30 | December 11, 2018 02:45 | 1d 22h | 7,597 | 24K |
| 8 | September 29, 2018 20:00 | October 4, 2018 06:00 | 4d 10h | 7,215 | 15K |
| 9 | July 25, 2018 11:45 | July 25, 2018 12:30 | 45m | 6,221 | 1,556 |
| 10 | July 15, 2018 22:30 | July 17, 2018 02:45 | 1d 4h | 4,950 | 6,319 |
Outage episodes by size in 2018: 207 reached 100+ customers, 94 reached 1,000+ customers, 5 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 Knox County reported on EIA Form 861 for 2018, 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 | 2018 | 3.5 hrs | 1.84 | 2.1 hrs | 1.49 |
| City of Clinton - (TN) | 2018 | 77 min | 1.51 | 77 min | 1.51 |
| Fort Loudoun Electric Coop | 2018 | 4.9 hrs | 2.60 | 4.4 hrs | 2.48 |
| City of Lenoir - (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 55% of Tennessee's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 244,081 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. Knox County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Knox County, TN annual power outage report, 2018, 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/2018/tennessee/knox-county