County annual report · FIPS 21121
2021 Knox County, KY Power Outage Report
In 2021, customers in Knox County, KY went without power for an average of 3.9 hours, a total of 59K customer-hours (Kentucky average 10.4 hours). That ranks 72nd worst of 119 Kentucky counties and 1570th of 2,974 nationally.
Compared with KY, the US and 2020
Coverage line is EAGLE-I's share of Kentucky customers tracked each year.
Biggest outages in Knox County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 15, 2021 21:45 | February 19, 2021 20:00 | 3d 22h | 4,005 | 24K |
| 2 | October 13, 2021 21:00 | October 13, 2021 21:45 | 45m | 1,473 | 417 |
| 3 | May 26, 2021 14:30 | May 26, 2021 18:00 | 3h 30m | 1,395 | 2,793 |
| 4 | March 28, 2021 08:45 | March 29, 2021 00:15 | 15h 30m | 1,104 | 3,287 |
| 5 | August 6, 2021 12:00 | August 6, 2021 20:00 | 8h | 927 | 301 |
| 6 | July 13, 2021 23:45 | July 14, 2021 00:45 | 1h | 925 | 925 |
| 7 | May 4, 2021 21:15 | May 4, 2021 22:30 | 1h 15m | 817 | 430 |
| 8 | February 7, 2021 08:15 | February 8, 2021 01:45 | 17h 30m | 646 | 4,366 |
| 9 | September 30, 2021 19:45 | September 30, 2021 21:45 | 2h | 646 | 493 |
| 10 | July 9, 2021 12:30 | July 9, 2021 20:30 | 8h | 587 | 184 |
Outage episodes by size in 2021: 40 reached 100+ customers, 4 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 Knox County reported on EIA Form 861 for 2021, 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 |
|---|---|---|---|---|---|
| Kentucky Utilities Co | 2021 | 3.3 hrs | 1.17 | 1.7 hrs | 0.91 |
| Cumberland Valley Electric, Inc. | 2021 | 16.2 hrs | 3.74 | 4.6 hrs | 2.41 |
| Corbin City Utilities Comm | - | - | - | - | - |
| Barbourville Utility Comm | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 92% of Kentucky's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 15,272 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, KY annual power outage report, 2021, 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/2021/kentucky/knox-county