– 0% of Oklahoma out 0 customers out in Oklahoma

Power outage history

Oklahoma County Oklahoma

17hours

without power for the average customer in a typical year, 2018–2025

4th most of 75 in Oklahoma 2.5× the national median

Worst outage on record Oct 28, 2020 55% of customers out · 90% back in 8.4 days

Hours without power, average customer per year 17h / yr State average 8.3 h · national median 6.6 h

Major outages a year 0.4 Peaks over 10% of customers or 50,000 customers

Typical time to restore 90% 2.2days Median across major outages, from the peak

Longest single outage 14.4days Oct 26, 2020, over 1% of customers out

Outage hours on storm days 97% Share falling on days with a NOAA storm report here

Worst year 2020 4.2 days without power, average customer

Electricity customers 350,091 ORNL customer model · 8 well-covered years

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 Oklahoma's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025

0%100% of customers out

Year by year

Hours in the dark, per customer

2020 was the worst well-recorded year, at 4.2 days for the average customer. Hatched years have a thin record and are left out of the averages.

Oklahoma, hours without power per customer

OklahomaUS median countyOklahoma average

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	193,316	55%	14.4 d	8.4 d	33M
Aug 26, 2019	Thunderstorms	80,563	23%	3.0 d	2.1 d	2.3M
Jun 25, 2024	Thunderstorms	53,243	15%	47 h	39 h	841k
Apr 29, 2017	Thunderstorms	36,231	10%	2.4 d	2.2 d	656k
Jun 17, 2023	Thunderstorms	34,508	10%	46 h	38 h	603k
Nov 3, 2024	Tornadoes	17,999	5%	39 h	47 h	298k
Oct 15, 2021	Thunderstorms	19,664	6%	18 h	18 h	226k
Mar 14, 2025	Windstorm	17,137	5%	26 h	28 h	220k
Jul 12, 2020	Thunderstorms	23,866	7%	20 h	22 h	216k
Nov 14, 2020	No storm report	21,182	6%	15 h	7.0 h	208k
May 13, 2020	Windstorm	17,797	5%	21 h	23 h	184k
Jan 1, 2021	Winter storm	12,218	3%	15 h	19 h	119k
Jul 8, 2022	Thunderstorms	13,749	4%	15 h	25 h	90k
Jul 10, 2020	Thunderstorms	13,910	4%	11 h	15 h	77k
Jul 30, 2018	No storm report	11,433	3%	8.8 h	13 h	69k
Jun 22, 2018	Thunderstorms	16,426	5%	11 h	16 h	67k
Apr 21, 2017	Thunderstorms	12,086	3%	9.0 h	18 h	50k
Feb 16, 2021	Winter storm	6,827	2%	9.8 h	5.8 h	48k
May 7, 2024	Thunderstorms	9,155	3%	6.8 h	16 h	47k
Mar 12, 2016	No storm report	18,643	5%	2.8 h	2.0 h	46k
Apr 26, 2016	Tornadoes	21,052	6%	3.5 h	3.5 h	44k
Feb 26, 2023	Thunderstorms	11,421	3%	5.0 h	15 h	42k
Jan 1, 2022	No storm report	9,965	3%	5.2 h	8.2 h	39k
Jul 15, 2016	Heat	5,681	2%	7.8 h	14 h	39k
Aug 8, 2021	No storm report	19,362	6%	2.8 h	1.8 h	39k
Jul 11, 2023	Thunderstorms	17,135	5%	2.8 h	6.5 h	37k
Feb 13, 2022	No storm report	14,186	4%	3.0 h	12 h	36k
Aug 31, 2020	Flooding	8,545	2%	6.0 h	15 h	35k
Mar 31, 2023	Wildfire	14,846	4%	3.2 h	5.0 h	32k
Apr 23, 2021	Thunderstorms	5,609	2%	5.8 h	6.5 h	30k

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 Oklahoma from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

Ice storm 82%
Thunderstorms 12%
No storm on record 3.2%
Windstorm 1.1%
Tornadoes 0.8%
Winter storm 0.7%

Who keeps the lights on

Utilities serving Oklahoma

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
City of Edmond	Municipal	116	82	1.46	10.7	40k
Canadian Valley Elec Coop, Inc	Cooperative	287	226	1.51	13.3	25k
Central Rural Electric Cooperative, Inc	Cooperative	275	138	1.58	12.9	20k
Cimarron Electric Coop	Cooperative	70	43	0.84	12.5	16k

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 (this county) 17 h
Logan 15 h
Kingfisher 12 h
Lincoln 11 h
Pottawatomie 9.9 h
Canadian 8.4 h
Cleveland 4.4 h

Across Oklahoma

Where it is darkest

Hours / yr64+

All Oklahoma 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 350,091 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 →