Power outage history
Jefferson County Kansas
4.0hours
without power for the average customer in a typical year, 2018–2025
32nd most of 81 in Kansas 38% below the national median
Every day since 2015
Eleven years, one night at a time
Each cell is a day. The brighter it is, the larger the share of Jefferson's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2019 was the worst well-recorded year, at 7.0 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Jefferson, hours without power per customer
The record
The biggest outages since 2015
Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.
| Began | Storm | Peak out | Share | Lasted | 90% restored | Customer-hours |
|---|---|---|---|---|---|---|
| Dec 15, 2021 | Thunderstorms | 2,086 | 20% | 40 h | 11 h | 29k |
| Nov 25, 2018 | Winter storm | 2,816 | 27% | 18 h | 15 h | 22k |
| Jul 14, 2023 | Thunderstorms | 2,229 | 21% | 31 h | 25 h | 16k |
| Jun 30, 2023 | Thunderstorms | 1,450 | 14% | 22 h | 18 h | 14k |
| Jun 21, 2019 | Thunderstorms | 3,101 | 30% | 15 h | 7.8 h | 13k |
| Aug 17, 2019 | Thunderstorms | 1,198 | 11% | 18 h | 14 h | 8.2k |
| Jun 4, 2020 | Thunderstorms | 2,770 | 26% | 9.2 h | 5.5 h | 7.4k |
| Jun 22, 2019 | Thunderstorms | 1,161 | 11% | 12 h | 11 h | 7.1k |
| Jun 11, 2021 | Thunderstorms | 1,594 | 15% | 6.0 h | 4.0 h | 6.6k |
| Jul 31, 2023 | Thunderstorms | 1,495 | 14% | 4.2 h | 2.8 h | 6.4k |
| Jun 14, 2021 | No storm report | 957 | 9% | 8.0 h | 7.8 h | 6.1k |
| Jun 7, 2015 | No storm report | 1,439 | 14% | 5.8 h | 2.0 h | 6.0k |
| Sep 21, 2021 | No storm report | 1,353 | 13% | 3.5 h | 15 h | 4.7k |
| Aug 14, 2024 | Thunderstorms | 623 | 6% | 19 h | 21 h | 4.7k |
| Jun 19, 2020 | No storm report | 723 | 7% | 6.8 h | 7.0 h | 4.5k |
| Nov 10, 2020 | No storm report | 1,303 | 12% | 5.2 h | 5.2 h | 4.3k |
| Jun 17, 2017 | Thunderstorms | 854 | 8% | 6.2 h | 2.8 h | 4.3k |
| Jul 16, 2024 | Thunderstorms | 1,169 | 11% | 7.2 h | 4.8 h | 4.0k |
| Jan 16, 2018 | No storm report | 984 | 9% | 5.5 h | 4.0 h | 4.0k |
| Oct 23, 2015 | No storm report | 1,434 | 14% | 3.0 h | 2.2 h | 3.7k |
| Sep 29, 2021 | No storm report | 1,347 | 13% | 2.5 h | 1.0 h | 3.4k |
| Jun 13, 2021 | No storm report | 958 | 9% | 3.5 h | 2.8 h | 3.3k |
| May 28, 2019 | No storm report | 894 | 9% | 7.8 h | 8.8 h | 3.3k |
| May 25, 2023 | No storm report | 419 | 4% | 7.8 h | – | 3.2k |
| Apr 18, 2024 | No storm report | 630 | 6% | 13 h | 13 h | 3.0k |
| May 26, 2016 | Thunderstorms | 1,798 | 17% | 4.5 h | 30 min | 2.7k |
| Jul 10, 2019 | Thunderstorms | 1,123 | 11% | 6.0 h | 5.5 h | 2.4k |
| Jul 17, 2017 | No storm report | 605 | 6% | 4.0 h | 13 h | 2.4k |
| Mar 4, 2025 | Winter storm | 1,175 | 11% | 7.8 h | 1.2 h | 2.3k |
| Nov 2, 2025 | No storm report | 309 | 3% | 7.5 h | – | 2.3k |
After the peak
How fast the lights come back
Each line is one major outage, from its peak. The amber line is the typical path.
When it happens
The outage clock
Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.
What was happening
Weather behind the outages
Each outage is matched to NOAA storm reports for Jefferson from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Thunderstorms 49%
- No storm on record 40%
- Winter storm 10%
- Ice storm 0.8%
Who keeps the lights on
Utilities serving Jefferson
As each utility reports to the Energy Information Administration for its whole Kansas territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Evergy Kansas Central, Inc | Investor Owned | 126 | 80 | 1.17 | 14.6 | 344k |
| Brown-Atchison E C A Inc | KS | – | – | – | 14.1 | 31k |
| FreeState Electric Coop | Cooperative | 335 | 327 | – | 17.8 | 18k |
EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.
Next door
Neighbouring counties
- Jackson 21 h
- Jefferson (this county) 4.0 h
- Shawnee 3.2 h
- Atchison 3.1 h
- Leavenworth 2.5 h
- Douglas 2.3 h
About these numbers
Notes
Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 10,486 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →