County annual report · FIPS 21115
2021 Johnson County, KY Power Outage Report
In 2021, customers in Johnson County, KY went without power for an average of 69.3 hours, a total of 889K customer-hours (Kentucky average 10.4 hours). That ranks 6th worst of 119 Kentucky counties and 117th 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 Johnson 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 11, 2021 02:00 | March 10, 2021 22:45 | 27d 20h | 10,000 | 821K |
| 2 | March 15, 2021 22:45 | March 16, 2021 00:15 | 1h 30m | 1,198 | 1,499 |
| 3 | September 19, 2021 21:45 | September 19, 2021 22:45 | 1h | 973 | 973 |
| 4 | August 19, 2021 18:30 | August 20, 2021 18:45 | 1d | 797 | 2,888 |
| 5 | October 21, 2021 14:00 | October 21, 2021 14:30 | 30m | 729 | 212 |
| 6 | June 24, 2021 12:15 | June 24, 2021 16:30 | 4h 15m | 711 | 1,123 |
| 7 | May 23, 2021 22:15 | May 24, 2021 20:00 | 21h 45m | 520 | 7,068 |
| 8 | August 12, 2021 08:00 | August 12, 2021 10:00 | 2h | 504 | 922 |
| 9 | August 13, 2021 17:30 | August 16, 2021 19:30 | 3d 2h | 493 | 3,255 |
| 10 | May 22, 2021 20:00 | May 23, 2021 00:45 | 4h 45m | 460 | 578 |
Outage episodes by size in 2021: 44 reached 100+ customers, 2 reached 1,000+ customers, 1 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 Johnson 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 Power Co | 2021 | 47.4 hrs | 2.65 | 6.8 hrs | 1.86 |
| Big Sandy Rural Elec Coop Corp | 2021 | 109.2 hrs | 5.10 | 8.2 hrs | 2.88 |
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 ÷ 12,834 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. Johnson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Johnson 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/johnson-county