Power outage history
Cleveland County Oklahoma
4.4hours
without power for the average customer in a typical year, 2018–2025
60th most of 75 in Oklahoma 33% 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 Cleveland's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2020 was the worst well-recorded year, at 20 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Cleveland, 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 |
|---|---|---|---|---|---|---|
| Oct 26, 2020 | Ice storm | 33,745 | 22% | 11.3 d | 7.1 d | 2.4M |
| Jul 12, 2020 | Thunderstorms | 26,619 | 18% | 46 h | 38 h | 349k |
| Feb 26, 2023 | Tornadoes | 17,433 | 12% | 43 h | 40 h | 182k |
| Aug 26, 2019 | Thunderstorms | 6,082 | 4% | 41 h | 42 h | 132k |
| Jun 17, 2023 | Thunderstorms | 8,068 | 5% | 36 h | 37 h | 120k |
| Nov 3, 2024 | Thunderstorms | 12,297 | 8% | 19 h | 19 h | 107k |
| Jul 9, 2023 | Thunderstorms | 15,170 | 10% | 6.0 h | 4.8 h | 52k |
| Mar 14, 2025 | Wildfire | 10,106 | 7% | 11 h | 10 h | 50k |
| Nov 15, 2025 | No storm report | 19,200 | 13% | 4.2 h | 2.8 h | 47k |
| May 7, 2024 | Thunderstorms | 17,814 | 12% | 4.5 h | 3.8 h | 43k |
| Apr 19, 2023 | Thunderstorms | 7,075 | 5% | 12 h | 17 h | 42k |
| Jan 1, 2022 | No storm report | 6,275 | 4% | 9.0 h | 6.2 h | 40k |
| Jun 9, 2019 | Thunderstorms | 5,579 | 4% | 8.2 h | 11 h | 29k |
| May 18, 2017 | Thunderstorms | 4,174 | 3% | 7.5 h | – | 26k |
| Jul 10, 2020 | Thunderstorms | 3,950 | 3% | 9.8 h | – | 26k |
| Feb 16, 2021 | Winter storm | 14,588 | 10% | 3.8 h | 30 min | 22k |
| Apr 11, 2016 | Thunderstorms | 5,230 | 3% | 4.8 h | 3.5 h | 21k |
| Jun 1, 2022 | Thunderstorms | 4,066 | 3% | 7.5 h | – | 20k |
| Feb 5, 2020 | Winter storm | 5,848 | 4% | 3.8 h | 3.8 h | 19k |
| Dec 28, 2015 | No storm report | 2,518 | 2% | 7.5 h | – | 19k |
| Jan 1, 2021 | Winter storm | 3,573 | 2% | 5.0 h | – | 17k |
| Jun 19, 2020 | No storm report | 2,794 | 2% | 7.0 h | – | 16k |
| Jun 16, 2017 | No storm report | 3,265 | 2% | 4.5 h | – | 15k |
| Jun 22, 2018 | Thunderstorms | 3,025 | 2% | 6.8 h | – | 14k |
| May 8, 2015 | Thunderstorms | 7,442 | 5% | 1.8 h | 30 min | 13k |
| Jun 12, 2021 | No storm report | 9,116 | 6% | 1.5 h | 48 min | 12k |
| Jul 27, 2020 | No storm report | 4,670 | 3% | 3.8 h | – | 12k |
| Oct 10, 2021 | Thunderstorms | 2,334 | 2% | 5.8 h | – | 11k |
| Feb 14, 2023 | Windstorm | 9,943 | 7% | 1.8 h | 48 min | 10k |
| May 14, 2020 | Thunderstorms | 2,473 | 2% | 4.2 h | – | 10.0k |
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 Cleveland from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Ice storm 58%
- Thunderstorms 24%
- No storm on record 9.3%
- Tornadoes 4.9%
- Winter storm 1.7%
- Wildfire 1.2%
Who keeps the lights on
Utilities serving Cleveland
As each utility reports to the Energy Information Administration for its whole Oklahoma territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Oklahoma Gas & Electric Co | Investor Owned | 237 | 145 | 1.71 | 12.5 | 716k |
| Oklahoma Electric Coop Inc | Cooperative | 70 | 56 | 1.29 | 12.9 | 60k |
| Canadian Valley Elec Coop, Inc | Cooperative | 287 | 226 | 1.51 | 13.3 | 25k |
| City of Lexington | OK | – | – | – | – | 7.2k |
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
- Oklahoma 17 h
- Pottawatomie 9.9 h
- Canadian 8.4 h
- Cleveland (this county) 4.4 h
- McClain 3.8 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 151,488 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 →