County annual report · FIPS 21111
2017 Jefferson County, KY Power Outage Report
In 2017, customers in Jefferson County, KY went without power for an average of 1.4 hours, a total of 529K customer-hours (Kentucky average 2.6 hours). That ranks 71st worst of 119 Kentucky counties and 1892nd of 2,786 nationally.
Compared with KY, the US and 2016
Coverage line is EAGLE-I's share of Kentucky 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 | December 13, 2017 11:30 | December 14, 2017 00:00 | 12h 30m | 11,527 | 3,430 |
| 2 | July 13, 2017 12:00 | July 15, 2017 04:00 | 1d 16h | 9,002 | 5,078 |
| 3 | January 23, 2017 10:00 | January 24, 2017 07:15 | 21h 15m | 8,817 | 11K |
| 4 | August 1, 2017 09:15 | August 1, 2017 20:45 | 11h 30m | 7,445 | 3,638 |
| 5 | January 16, 2017 12:45 | January 18, 2017 05:30 | 1d 16h | 7,413 | 8,380 |
| 6 | September 18, 2017 04:45 | September 18, 2017 05:15 | 30m | 6,925 | 1,732 |
| 7 | March 1, 2017 03:15 | March 2, 2017 09:15 | 1d 6h | 6,128 | 37K |
| 8 | January 7, 2017 17:30 | January 8, 2017 07:00 | 13h 30m | 4,863 | 5,296 |
| 9 | November 5, 2017 12:30 | November 7, 2017 07:15 | 1d 18h | 4,729 | 22K |
| 10 | September 26, 2017 09:30 | September 28, 2017 04:30 | 1d 19h | 4,119 | 2,583 |
Outage episodes by size in 2017: 244 reached 100+ customers, 89 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 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 |
|---|---|---|---|---|---|
| Salt River Electric Coop Corp | 2017 | 1.9 hrs | 1.15 | 61 min | 0.80 |
| Shelby Energy Coop, Inc - (KY) | 2017 | 6.8 hrs | 2.68 | 1.8 hrs | 1.28 |
| Louisville Gas & Electric Co | 2017 | 1.6 hrs | 1.00 | 76 min | 0.92 |
| 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 n/a of Kentucky's customers in 2017; 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, 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/kentucky/jefferson-county