County annual report · FIPS 21111
2020 Jefferson County, KY Power Outage Report
In 2020, customers in Jefferson County, KY went without power for an average of 1.6 hours, a total of 613K customer-hours (Kentucky average 4.7 hours). That ranks 98th worst of 119 Kentucky counties and 2434th of 3,019 nationally.
Compared with KY, the US and 2019
Coverage line is EAGLE-I's share of Kentucky customers tracked each year.
Biggest outages in Jefferson County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 12, 2020 12:30 | October 14, 2020 03:30 | 1d 15h | 27,133 | 11K |
| 2 | July 10, 2020 10:15 | July 14, 2020 05:00 | 3d 18h | 14,215 | 96K |
| 3 | September 23, 2020 11:45 | September 23, 2020 21:00 | 9h 15m | 12,685 | 3,450 |
| 4 | March 12, 2020 13:15 | March 13, 2020 01:45 | 12h 30m | 11,002 | 3,362 |
| 5 | August 10, 2020 12:45 | August 13, 2020 07:00 | 2d 18h | 7,966 | 5,198 |
| 6 | June 10, 2020 10:15 | June 11, 2020 23:30 | 1d 13h | 7,529 | 8,720 |
| 7 | June 16, 2020 11:15 | June 17, 2020 02:00 | 14h 45m | 6,871 | 3,770 |
| 8 | April 8, 2020 11:00 | April 10, 2020 01:15 | 1d 14h | 6,608 | 24K |
| 9 | October 23, 2020 12:15 | October 24, 2020 08:15 | 20h | 5,953 | 3,875 |
| 10 | September 13, 2020 23:45 | September 14, 2020 10:30 | 10h 45m | 5,852 | 1,839 |
Outage episodes by size in 2020: 224 reached 100+ customers, 57 reached 1,000+ customers, 4 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 2020, 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 |
|---|---|---|---|---|---|
| Salt River Electric Coop Corp | 2020 | 1.6 hrs | 0.99 | 86 min | 0.88 |
| Shelby Energy Coop, Inc - (KY) | 2020 | 2.2 hrs | 0.94 | 1.9 hrs | 0.77 |
| Louisville Gas & Electric Co | 2020 | 1.8 hrs | 0.88 | 72 min | 0.75 |
| Kentucky (statewide) | - | - | - | - | - |
| LG&E and KU | - | - | - | - | - |
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 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 390,033 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, KY annual power outage report, 2020, 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/2020/kentucky/jefferson-county