Power outage history
Cowley County Kansas
1.3hours
without power for the average customer in a typical year, 2018–2025
71st most of 81 in Kansas 80% 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 Cowley's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2025 was the worst well-recorded year, at 2.7 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Cowley, 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 |
|---|---|---|---|---|---|---|
| Jun 7, 2025 | Thunderstorms | 3,918 | 19% | 19 h | 16 h | 30k |
| Dec 28, 2015 | Winter storm | 3,046 | 14% | 16 h | 9.0 h | 24k |
| Aug 5, 2017 | Thunderstorms | 2,438 | 12% | 8.5 h | 6.5 h | 12k |
| Oct 27, 2020 | Ice storm | 7,841 | 37% | 13 h | 30 min | 11k |
| Aug 5, 2023 | Thunderstorms | 1,742 | 8% | 9.2 h | 6.5 h | 9.8k |
| Jun 26, 2017 | Thunderstorms | 1,383 | 7% | 6.0 h | 16 h | 6.0k |
| Aug 13, 2023 | Thunderstorms | 2,256 | 11% | 6.0 h | 3.5 h | 5.5k |
| Jul 21, 2020 | No storm report | 2,384 | 11% | 2.0 h | 1.8 h | 4.8k |
| Mar 5, 2025 | No storm report | 1,791 | 8% | 2.5 h | 3.0 h | 4.0k |
| Dec 26, 2019 | No storm report | 3,357 | 16% | 1.2 h | 48 min | 4.0k |
| Apr 4, 2017 | Thunderstorms | 1,147 | 5% | 3.2 h | 2.5 h | 3.2k |
| Nov 26, 2019 | Windstorm | 958 | 5% | 3.8 h | – | 2.9k |
| Jan 8, 2020 | No storm report | 509 | 2% | 5.0 h | – | 2.4k |
| Apr 26, 2016 | No storm report | 994 | 5% | 2.5 h | – | 2.3k |
| Jun 25, 2018 | Thunderstorms | 2,516 | 12% | 1.5 h | 1.5 h | 2.3k |
| Apr 22, 2021 | No storm report | 4,462 | 21% | 30 min | 30 min | 2.2k |
| Jun 17, 2025 | Thunderstorms | 1,017 | 5% | 6.5 h | – | 2.2k |
| Nov 29, 2024 | No storm report | 678 | 3% | 3.2 h | – | 2.2k |
| Mar 9, 2021 | No storm report | 1,457 | 7% | 1.5 h | 1.2 h | 2.2k |
| Jul 14, 2016 | No storm report | 952 | 5% | 2.2 h | – | 2.1k |
| Aug 19, 2016 | Thunderstorms | 1,883 | 9% | 1.5 h | 1.0 h | 2.1k |
| May 3, 2018 | No storm report | 800 | 4% | 4.5 h | – | 1.9k |
| Aug 22, 2015 | No storm report | 949 | 4% | 2.0 h | – | 1.9k |
| Jun 17, 2025 | Thunderstorms | 961 | 5% | 3.2 h | – | 1.8k |
| Jul 30, 2018 | Thunderstorms | 501 | 2% | 5.0 h | – | 1.8k |
| May 26, 2024 | Thunderstorms | 953 | 5% | 3.8 h | – | 1.7k |
| Jul 31, 2025 | No storm report | 934 | 4% | 2.0 h | – | 1.7k |
| Aug 19, 2016 | Thunderstorms | 295 | 1% | 6.0 h | – | 1.7k |
| Jul 7, 2021 | No storm report | 858 | 4% | 2.2 h | – | 1.6k |
| Mar 11, 2020 | No storm report | 1,001 | 5% | 2.2 h | – | 1.5k |
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 Cowley from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Thunderstorms 49%
- No storm on record 38%
- Ice storm 9.3%
- Windstorm 2.4%
- Heat 1.1%
Who keeps the lights on
Utilities serving Cowley
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 South, Inc | Investor Owned | 244 | 84 | 1.39 | 14.5 | 306k |
| Butler Rural El Coop Assn, Inc | KS | 102 | 102 | 1.49 | 14.3 | 102k |
| Sumner-Cowley Elec Coop, Inc | KS | – | – | – | 15.7 | 49k |
| Caney Valley El Coop Assn, Inc | KS | 352 | 352 | 3.37 | 16.1 | 32k |
| City of Winfield | Municipal | – | – | – | 13.5 | 6.3k |
| City of Udall | KS | – | – | – | – | 4.0k |
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
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 21,126 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 →